Grades & GPA
The arithmetic behind your transcript — averages, weights and what a grade is really worth.
🎓GPA Calculator📈Cumulative GPA Calculator🧮Grade Calculator🎯Final Exam CalculatorEduDish · Study tools
Study sums,
sorted in seconds.
EduDish is a study desk of single-purpose tools for the arithmetic that surrounds learning — a GPA to work out, a final exam target to check, a reference to format, a deck of flashcards to flip before the bus comes. Every tool is one page with one job. Open it, use it, get back to the actual studying.
- No account
- Nothing uploaded
- Works offline
Categories
Twenty tools, five shelves
A GPA calculator and a flashcards deck have nothing in common except a student, so they do not share a drawer. Each shelf below holds four tools that belong together — grade arithmetic, conversions, writing, time, and maths — and every tool carries its own name and mark, so the one you need can be found from the shape of your problem before you read a single description.
If you would rather skip the shelves, press CtrlK anywhere on the site and type what you are trying to do — “final”, “cite”, “fraction” — and jump straight there.
Converters
Turning one grading language into another: percentages, letters, points and scales.
⇄Percentage to GPA Converter🔤Letter Grade Converter🔬Scientific Notation Converter🏛️Roman Numeral ConverterWriting & Essays
Counts, citations and outlines for the words you hand in.
✍️Word Counter for Essays📖Reading Time Calculator🖋️Citation Generator🗂️Essay Outline BuilderFocus & Time
Timers, flashcards and the calendar maths of a school year.
🍅Pomodoro Study Timer🃏Flashcards Maker⌨️Typing Speed Test🎂Age & School Days CalculatorMaths Helpers
Fraction, percentage and algebra help that shows its working.
➗Fraction Calculator％Percentage Calculator📐Quadratic Equation Solver📊Statistics CalculatorA good study tool answers one question, shows its working, and then gets out of the way of the learning.The standard every page on this desk is held to
Featured tools
The regulars, in detail
Eight tools do most of the work on this desk, so here they are opened up rather than merely listed: what each one actually does, how it does it, the method or standard underneath, and — just as important — where its answers stop being trustworthy. What you see in each card is a real worked example, not a screenshot.
🎓Grades & GPA
GPA Calculator
The GPA calculator turns a term's worth of letter grades into the single number colleges actually rank you by. You give it each course, the grade you earned and how many credits the course carries; it gives you back the semester GPA to two decimal places, the total grade points behind it, and a plain-language reading of where that figure sits. If your school rewards advanced courses, a level selector adds the customary half-point or full-point bonus, so an honours timetable is judged the way your school judges it.
Biology · A · 4 cr → 16.0 points
History · B+ · 3 cr → 9.9 points
Algebra · A− · 3 cr → 11.1 points
Semester GPA: 3.70 · 37.0 points / 10 credits
History · B+ · 3 cr → 9.9 points
Algebra · A− · 3 cr → 11.1 points
Semester GPA: 3.70 · 37.0 points / 10 credits
How it works
Add a row per course, choose the letter, type the credits, and the answer updates as you type — there is no calculate button to hunt for. Because the display shows the grade-point total as well as the average, you can watch a heavy five-credit course move the result in a way a one-credit elective simply cannot, which is the single most useful intuition this page teaches.
The method underneath
The method is the standard weighted mean used by registrars everywhere: each grade is converted to points on the 4.0 scale (A = 4.0, A− = 3.7, B+ = 3.3, and so on in 0.3 steps), multiplied by the course's credits, summed, and divided by the total credits. Nothing is rounded until the final figure, so the arithmetic matches a hand-worked transcript check to the last digit.
Where it stops
What it cannot know is your school's own table. A few colleges award 4.3 for an A+, others refuse plus and minus grades entirely, and weighted scales vary by district. Use this page for planning, comparisons and catching your own arithmetic slips — and use your official transcript's scale for anything you sign.
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🎯Grades & GPA
Final Exam Calculator
Every term ends with the same corridor question — what do I need on the final? This calculator answers it exactly. Give it the grade you hold today, the course grade you are aiming at, and the weight your syllabus assigns to the final exam, and it returns the precise percentage the exam paper has to produce, together with an honest verdict: already secured, comfortably reachable, demanding, or beyond what the remaining marks can deliver.
Current grade 82% · Target 90% · Final worth 30%
You need 108.7%… out of reach
Target 87% instead → you need 98.7% demanding, possible
You need 108.7%… out of reach
Target 87% instead → you need 98.7% demanding, possible
How it works
The three inputs mirror how a course is actually built, so a quick trip to the syllabus is all the preparation required. The verdict underneath the number is where the value sits: a student told they need 96% studies differently from one told they need 54%, and a student told their target is already banked can spend the last week protecting it instead of cramming for marks they no longer need.
The method underneath
Underneath is one line of algebra. Your final course grade is a weighted blend: current grade times the weight already decided, plus exam score times the exam weight. The tool sets that blend equal to your target and solves for the exam score — the same equation teachers use when they build grade books, run in the direction students actually need.
Where it stops
The answer assumes the final is the only remaining item and that no curve, dropped score or extra credit will intervene. Where a target computes above 100%, the page says so and shows the best grade still available on a perfect paper, because a truthful ceiling is more useful than a motivational fiction.
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✍️Writing & Essays
Word Counter for Essays
Word limits are the silent co-author of every essay: 500 words, 1,500 words, 'no more than 2,000'. This counter treats a draft the way a marker's software will — paste or type the text and it counts words, characters, sentences and paragraphs live, then adds the two figures writers actually plan with: how long the piece takes to read, and how long it takes to say aloud.
Words 1,482 · Sentences 74 · Reading 7 min · Aloud 11 min
Limit: 1,500 words → 18 words to spare
Limit: 1,500 words → 18 words to spare
How it works
The extra statistics are diagnostic, not decorative. A sentence count beside a word count gives an average sentence length, and when a draft 'feels dense' that average is usually the reason; the reading-time figure tells a student rehearsing a presentation whether the script is a four-minute talk or an eight-minute one, before an audience has to find out the hard way.
The method underneath
Counting follows the whitespace rule — a word is whatever sits between spaces — which is the definition most submission systems and this page share, stated openly because counters differ at the edges: hyphenated compounds count as one word here, a number counts as a word, and an em dash floating alone between spaces counts as its own word, which can nudge close calls.
Where it stops
No counter can tell you whether the words are good, and none can guarantee another program counts identically; differences of a few words in a thousand are normal across tools. Write to a small margin under the limit and this page has done its job — the remaining words are your responsibility, as they should be.
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🖋️Writing & Essays
Citation Generator
Reference lists are where careful essays lose careless marks, and they are lost on formatting rather than ideas: a missing italic, a year in the wrong place, an author written the wrong way round. This generator builds the two formats students meet most — APA 7 and MLA 9 — for the three sources they cite most, books, websites and journal articles, arranging author, year, title and publication details in each style's own order and punctuation.
APA 7 · book
Achebe, C. (1958). Things fall apart. Heinemann.
MLA 9 · same book
Achebe, Chinua. Things Fall Apart. Heinemann, 1958.
Achebe, C. (1958). Things fall apart. Heinemann.
MLA 9 · same book
Achebe, Chinua. Things Fall Apart. Heinemann, 1958.
How it works
Pick the style your department demands, pick the source type, and fill the fields with what the title page or article header actually shows. The reference appears as you type, ready to copy into your bibliography; the author field reminds you that APA wants initials where MLA wants a first name, because that single difference is the most common reason home-made references look subtly wrong.
The method underneath
The generator follows the reference-list (not in-text) rules of each style: APA's sentence-case titles and bracketed dates, MLA's title case and its 'container' logic for journals and websites, italics standing where each style places them. It is a formatter, not a database — it knows nothing about your source except what you type, which is precisely why it can never invent details the way a careless search result sometimes does.
Where it stops
It covers the common core and says where the edges are: DOIs, edition statements, translators, chapters in edited collections and access dates for changeable web pages all need a human glance at the official style guide. Treat the output as a correct first draft of the entry, formatted in seconds, that you then verify once against your course's examples before submitting.
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🍅Focus & Time
Pomodoro Study Timer
The pomodoro timer on this page is a study sprint clock: twenty-five minutes of single-task focus, a five-minute break, repeat. It counts down in the tab, chimes softly when a round ends, keeps a tally of completed sessions, and lets you lengthen or shorten both halves of the cycle if your subject or your stamina runs to a different rhythm.
24:59 Focus · session 3 of 4
✓✓✓✓ 2 sessions banked · break next: 5:00
✓✓✓✓ 2 sessions banked · break next: 5:00
How it works
Its job is to remove the two decisions that quietly eat revision time — when to start and when to stop. You choose a task small enough to name in one sentence, press start, and work until the chime; the break that follows is scheduled rather than stolen, which for many students is the first time a study session has had a shape at all. The session counter matters too: 'six pomodoros of chemistry' is a day you can describe, repeat and improve.
The method underneath
The technique dates to Francesco Cirillo's late-1980s experiments with a kitchen timer, and its mechanism is mundane on purpose: short, bounded commitments lower the cost of starting; enforced breaks protect the encoding that happens between efforts; and a visible count turns vague effort into data. Nothing about it is mystical, which is exactly why it survives contact with real timetables.
Where it stops
A timer will not rescue a session with no task chosen, and some work — long proofs, essay drafting — chafes against 25-minute borders; the settings exist so the rhythm can bend to 40 or 50 minutes for that work. What the method cannot do, no clock can: it protects the time. What fills the time is still the studying.
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🃏Focus & Time
Flashcards Maker
This is a pocket deck-builder: type a question on the front of a card and its answer on the back, and the page becomes a deck you can flip, shuffle, step through in either direction and prune as cards graduate from unknown to known. It starts with two sample cards so the flipping rhythm is obvious before you write a single card of your own.
Card 7 of 23 · Geography
What is the longest river in South America?
Click to flip → The Amazon
What is the longest river in South America?
Click to flip → The Amazon
How it works
Used well, a deck is a retrieval machine. Read the front, say the answer aloud or in your head — honestly, before touching the card — then flip to check. The 'mark known' button exists for cards that have earned retirement after repeated correct recalls, and shuffling keeps position from becoming a false clue, the quiet way paper decks cheat when the third card is always the same answer.
The method underneath
The method behind it is retrieval practice, one of the most consistently supported findings in the study-skills literature: producing an answer strengthens the memory of it far more than re-reading it does. Spacing those retrievals across days multiplies the effect, which is why short daily deck sessions beat one long session the night before — the page's two-minute rhythm is designed for exactly that habit.
Where it stops
The honest limit is storage: this deck lives in the open tab and is gone when it closes, by design. For tonight's quiz that is a feature — no account, no syncing, nothing to maintain — but a deck you need all term should be copied somewhere durable once it is built, and this page tells you so rather than pretending otherwise.
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➗Maths Helpers
Fraction Calculator
Fractions are where confident students lose quiet marks — not on hard ideas, but on a common denominator forgotten or a simplification skipped. This calculator adds, subtracts, multiplies and divides any two fractions and reports the answer three ways: simplified fraction, mixed number when the result tops one, and a decimal for sanity-checking against the real world.
3/4 + 2/5 → common denominator 20 → 15/20 + 8/20
= 23/20 = 1 3/20 = 1.15
= 23/20 = 1 3/20 = 1.15
How it works
Enter numerator over denominator for each fraction, choose the operation, and the working note under the result names the steps: the common denominator used, or the multiply-across for multiplication and the flipped second fraction for division, and the greatest common divisor that did the simplifying. That note is deliberate — a bare answer helps tonight's homework once; the method helps on the exam where no calculator is allowed.
The method underneath
The arithmetic is exact integer work throughout, so 1/3 + 1/6 comes out as precisely 1/2 rather than a decimal approximation wearing a fraction costume. Simplification divides top and bottom by their greatest common divisor, and signs are normalised onto the numerator so a negative answer reads the way textbooks print it.
Where it stops
It handles the four operations on two fractions at a time, in whole numbers. Chains of three fractions, algebraic fractions with unknowns, and mixed-number inputs must be converted first (3½ is 7/2 — there is a worked conversion in the guide on the tool's page). Within those borders, the answers are exact and the working is shown.
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⌨️Focus & Time
Typing Speed Test
Exams are increasingly typed, essays are entirely typed, and yet most students have never measured the skill they spend hours a day using. This test fixes that in a minute: type the passage shown, and the page reports your speed in words per minute and your accuracy as a percentage, character by character, while you type.
Speed 47 wpm · Accuracy 96.2% · Time 58s
Correct characters glow green as you type; errors underline in red.
Correct characters glow green as you type; errors underline in red.
How it works
The clock starts on your first keystroke, so there is no frantic hunt for a start button and no reaction-time penalty. Mistakes are underlined in place rather than saved up for a verdict at the end, which teaches the useful habit of noticing an error the moment it happens. When the passage ends, both numbers appear together — because speed without accuracy is just faster editing later.
The method underneath
The measurement follows the standard convention: a 'word' counts as five characters including spaces, correct characters only, divided by the minutes taken. That is the same yardstick most typing tutors use, which means a score here can be compared sensibly with scores elsewhere — and comparing your own scores across weeks is the use that actually improves typing.
Where it stops
One passage, one minute, one keyboard: it is a snapshot, not a certification. Passage familiarity, a laptop versus a mechanical keyboard, and simple tiredness all move the result by several words a minute, so treat single readings as weather and the trend across attempts as climate.
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Category guides
Why these shelves are arranged this way
A tour of the five categories, what kinds of questions live on each, and the ideas underneath them — the part of the site worth reading once, before the tools become routine.
Grades & GPA, in depth
Grades feel mysterious mostly because two different jobs share one word. A grade is first a measurement — how much of this course did this student demonstrate? — and second a currency, exchanged for course places, scholarships and self-respect. The tools on this shelf serve the currency side honestly: they convert, average and project, using the tables schools themselves publish. A semester GPA is a credit-weighted mean, which means effort allocation is a mathematical question as much as a motivational one: an hour spent lifting a five-credit course from B to A− buys roughly five times the GPA movement of the same lift in a one-credit seminar. The cumulative calculator extends that logic across years, showing why early terms are the high-leverage ones — when few credits are banked, each new term is a large fraction of the whole.
The same realism governs the final exam calculator. By the last week, most of a course grade is already history; the exam can only move the portion its weight allows. Knowing the exact score you need — or learning that a target is already safe, or genuinely out of reach — turns the final week from anxiety into allocation: which paper deserves the next three hours is a question with an answer, and these pages compute it.
Converters, in depth
School life runs on translations between incompatible scales: a percentage from one teacher, a letter from another, a 4.0 figure demanded by an application form, a Roman numeral in a Latin text, a number too long to say out loud in a physics lesson. Each converter on this shelf exists because its translation is a table or a rule with traps, not a simple proportion. Eighty-seven percent is not 87% of a 4.0 — banding tables assign it 3.3, and converting a transcript course-by-course before averaging gives a materially different answer from averaging first.
The honest converters also print their assumptions. The percentage-to-GPA page names the banding table it uses and warns where other systems differ, because a conversion without a stated table is a rumour with decimals. Roman numerals and scientific notation are the same lesson in costume: notation systems are agreements, and fluency means knowing the agreement — subtractive pairs, exponent signs — well enough to spot when a printed figure breaks it.
Writing & Essays, in depth
The writing shelf is built around a simple observation: most essay problems are measurable before they are arguable. A draft that is 300 words over the limit, a bibliography in two tangled styles, a reading that runs eleven minutes for a six-minute slot — these are arithmetic problems wearing literary clothes, and they are fixable in minutes when the numbers are in front of you. The word counter therefore reports more than a count: sentence averages expose the dense paragraph, reading and speaking times expose the over-long presentation script.
The citation generator and outline builder cover the two ends of the same essay. The outline builder works before drafting, forcing the argument into a shape — thesis, points, evidence, analysis — while fixing it is still cheap. The citation generator works after drafting, when the ideas are settled and only the apparatus remains: references formatted to APA or MLA rules, consistently, so the bibliography stops being the place careful essays haemorrhage easy marks.
Focus & Time, in depth
Time is the only study resource that cannot be borrowed, and this shelf treats it as a measurable quantity rather than a mood. The pomodoro timer gives a session a shape — sprints and breaks decided by a clock instead of by willpower, which fluctuates. Flashcards give memory a schedule: the deck you flip daily for five minutes outperforms the notes you re-read for an hour, because retrieval, not exposure, is what builds recall. Even the typing test belongs here — it prices a skill in minutes per page.
The calendar tools close the loop between intention and term. An age and school-days calculator sounds mundane until it decides a child’s classroom or counts the real teaching days left before an exam — which is never the number of calendar days, once weekends take their share. Students who can state exactly how many focused sessions and school days remain plan differently from students working with a fog of “soon”, and planning differently is most of what study technique means.
Maths Helpers, in depth
The maths shelf takes a position: a calculator for schoolwork should show its working or it has only done half the job. The fraction calculator names the common denominator and the divisor that simplified the result. The quadratic solver leads with the discriminant, because knowing how many roots exist is the first line of the method, not a footnote. The statistics calculator prints mean and median side by side so their disagreement — the fingerprint of skewed data — is visible at a glance.
That philosophy is deliberate. Every tool here will happily produce tonight's answer, but each is arranged so the method is the memorable part: the three shapes of percentage problem, the five-character word in typing, the population-versus-sample divide in standard deviation. Homework ends; the methods are what the exam tests, and they are also what remains useful in laboratories, workshops and tax returns long after the course is forgotten.
Anatomy
Every tool page is the same page
Open any tool here and you will find the same three parts in the same three places. That is deliberate: learn one page and you have learned twenty, and there is nothing to set up, accept or dismiss before the tool starts answering.
01
The question
The tool's name, a line saying what it answers, and a trail back to its shelf. Nothing sits above it but the site header — no banner to close, no sign-up wall, no tutorial to skip before the first number can be typed.
02
The inputs
Whatever the calculation needs — grades and credits, a date of birth, a passage to type — laid out in the same order on every page, with the syllabus or source document each figure should come from named in the label, so the third visit is faster than the first.
03
The answer, with working
The result appears as you type and is never just a bare number: totals, intermediate steps and a sentence of interpretation travel with it, so you can check the method against your own notes instead of taking the page's word for anything.
Most tool pages carry one more panel, usually last and usually short, headed “Where it stops”. It names the point at which that tool's answer stops being reliable — a school's private grading table, a holiday this calendar cannot know about, a style-guide rule too detailed for a quick builder. It is the briefest panel on the page and, before you act on any figure, the one most worth reading.
In practice
Whole study jobs, start to finish
Nobody opens this site wanting a tool; they arrive with a job that needs two or three of them, in an order that matters. These are the runs that come up most, written out step by step.
The last week before finals
Five exams, six days, and a finite supply of evenings. The panic version studies everything equally; the planned version prices each exam first.
- Final Exam Calculator — for each course, the score you actually need; two will be safer than feared, one will deserve the week.
- Grade Calculator — confirm the “current grade” you fed step one is the real weighted figure, not a hopeful memory of it.
- Pomodoro Timer — divide the remaining evenings into named sprints per course, heaviest first while you are freshest.
An essay, from prompt to hand-in
The prompt arrives with a word limit and a style requirement, and both are easier to respect from the first paragraph than to retrofit at midnight.
- Essay Outline Builder — thesis and points into a structure, before a single paragraph exists to fall in love with.
- Word Counter — draft against the live count; check the sentence average when a section feels heavy.
- Citation Generator — build the reference list in one consistent style, then read it once against the style guide.
Raising a GPA on purpose
A cumulative average moves slowly and predictably, which means a realistic target can be computed a year ahead instead of hoped for in May.
- Cumulative GPA Calculator — try several “what-if” terms to find the term GPA your target actually requires.
- GPA Calculator — translate that term GPA into per-course grades, weighted by credits, so heavy courses get the effort.
- Flashcards — build decks for the two heaviest courses while the plan is fresh; five minutes daily is the engine of the whole scheme.
Limits
Where each tool stops
A tool that claims to have no edges is lying to you. These are the edges — the point past which each answer stops being worth trusting, and what to use instead.
- GPA Calculator
- It computes with the standard 4.0 table printed on its page. Your school's table is law where it differs — some award 4.3 for an A+, some ignore plus and minus grades — and no average computed here can overrule a registrar.
- Final Exam Calculator
- It assumes the exam is all that remains and that nothing will be curved, dropped or re-weighted. If your teacher curves, the needed score usually falls — but by an amount nobody can compute in advance, including this page.
- Percentage to GPA
- Conversion tables are institutional, not universal. The bands here are the common North-American ones; an admissions office abroad will use its own, and the difference can be several tenths of a point on the same transcript.
- Citation Generator
- It formats the core of APA and MLA entries for three source types. DOIs, editions, translators and chapters in edited volumes are beyond its brief, and italics lost in copy-paste must be restored by hand. The style guide your course names is the final word.
- Pomodoro Timer
- It protects time; it cannot fill it. A sprint spent re-reading a page you already know is a well-timed waste. The timer also lives in this tab — close it mid-session and the count is gone, which is the price of storing nothing.
- Flashcards
- Decks are deliberately temporary here. A deck you need at the end of term deserves durable storage and spaced repetition scheduling, which are jobs for a document or a dedicated flashcard application, not this page.
- Word Counter
- Counts depend on definitions. This page splits on whitespace; your word processor may treat hyphenated words, numbers and punctuation differently and disagree by a few words in a thousand. Hard limits deserve a safety margin, not an argument.
- Age & School Days
- School days here are weekdays, full stop. Holidays, closures and local cut-off dates are policy, not arithmetic, and only your school or admissions office can supply them. The page computes the calendar; people decide the rules.
- Statistics Calculator
- It summarises raw lists. Grouped data in a frequency table needs different formulas, and no summary statistic — however neatly computed — says anything about why the numbers look the way they do.
The longer version of all of this — what these tools may and may not be relied on for — lives on the disclaimer page.
Choosing
Picking between lookalikes
Half the questions a study desk gets are really about which of two similar tools to open. These are the pairs that get mixed up, and the question that separates them.
Semester GPA or cumulative?
GPA Calculator
One term, from course grades and credits you enter yourself.
Cumulative GPA Calculator
Your whole record, blending a past average with a new term by credit weight.
Working out this term from scratch: semester. Asking what this term does to your record — or what next term must be to reach a target: cumulative.
Grade or final exam calculator?
Grade Calculator
Where you stand now, across every weighted category graded so far.
Final Exam Calculator
What one remaining exam must score to land a chosen course grade.
Use them in that order. The final exam tool is only as honest as the current grade you feed it, and the grade calculator is where that number comes from.
Word count or reading time?
Word Counter
Counts a text you paste, with sentences, paragraphs and speaking time.
Reading Time Calculator
Turns any word count — yours or a book's — into minutes at your pace.
Checking your own draft against a limit: the counter. Planning how long a set chapter or a whole novel will take tonight: reading time, with the speed slider set honestly.
Mean, median or mode?
Mean
Every value shares the total equally; one extreme score drags it noticeably.
Median & mode
The middle value, unmoved by outliers; and the most frequent value in the set.
When a class set has one 12% among the 80s, quote the median and say why. The statistics calculator prints all three precisely so that choice is yours to make and defend.
Reference
The 4.0 scale, on one page
Half of this desk translates back to one table, so here it is in full — the letter bands and grade points every converter here uses, printed once so you never have to take a tool's word for them.
| Letter | Percentage band | Grade points | Usually read as |
|---|---|---|---|
| A | 93–100 | 4.0 | Excellent — honours territory |
| A− | 90–92 | 3.7 | Excellent, a step short of the top band |
| B+ | 87–89 | 3.3 | Very good |
| B | 83–86 | 3.0 | Good — the classic “B average” |
| B− | 80–82 | 2.7 | Good, lower edge |
| C+ | 77–79 | 2.3 | Satisfactory, upper edge |
| C | 73–76 | 2.0 | Satisfactory — the good-standing line at many colleges |
| C− | 70–72 | 1.7 | Satisfactory, lower edge |
| D+ | 67–69 | 1.3 | Below average, still passing in many systems |
| D | 63–66 | 1.0 | Minimum pass in many systems |
| D− | 60–62 | 0.7 | The lowest passing rung |
| F | Below 60 | 0.0 | Failing — credits attempted, no points earned |
Read the table as this site's convention, openly stated — not as a law of nature. Institutions set their own cut-offs (90 is a common alternative A threshold), and a weighted GPA can exceed 4.0 where advanced courses earn bonus points. When a figure leaves this site for an application form, the receiving institution's table replaces this one.
A short glossary for the whole desk
- Credit hour
- The weight a course carries in averages — roughly one hour of class a week across a term, and the reason big courses move your GPA more than small ones.
- Grade points
- The number a letter grade converts to (A = 4.0, B = 3.0…). A course earns grade points × credits toward your average.
- Weighted grade
- A course grade built from categories with fixed shares — exams, homework, participation — each contributing its percentage of the whole.
- Discriminant
- The b² − 4ac inside a quadratic: positive, zero or negative, it tells you how many real roots exist before you solve.
- Standard deviation
- The typical distance of values from their mean. Small: consistent data. Large: scattered data. Comes in population and sample flavours.
- Retrieval practice
- Studying by producing answers from memory — flashcards, self-quizzing — rather than re-reading. The evidence-backed engine of this desk's study shelf.
- Container (MLA)
- MLA's word for where a source lives: the journal holding an article, the site holding a page. References name the work, then its container.
- Thesis statement
- One sentence that takes a position the essay then defends. If it cannot be disagreed with, it is a topic announcement, not a thesis.
How it's built
Made like a study aid, not a funnel
- 1
One page, one question
There is no dashboard, no course to enrol in and no progress bar gamifying your revision. Each page answers the question in its title and then stops, because a study tool that keeps you browsing has failed at the only job that matters — sending you back to the books sooner.
- 2
Working shown, always
Wherever a number appears, the steps that produced it are on the page too: the common denominator, the discriminant, the pooled credits. That is slower to build than a bare answer box, and it is the entire point — answers expire at the exam door, methods walk in with you.
- 3
Your marks stay yours
No account, no uploads, no analytics watching which grades you typed. Calculations run in your browser on your device; close the tab and the session is gone. A student's transcript-in-progress is nobody else's business, including ours.
Under the hood, briefly
The whole site is hand-written HTML, CSS and vanilla JavaScript — the same three ingredients students meet in a first web course, with no framework, bundler or build server between the writing and your screen. Fonts are served from this site's own hosting, pages are static files, and every calculation you have seen on this page ran on your device while you read it.
Before any version ships, a checker walks every page following internal links, icon references and script wiring, and fails the build on anything pointing at something missing. It is not a clever piece of software. It is a strict one, and strict is what keeps a link you tap at midnight before a deadline from landing on a blank page.
You can verify the privacy claim yourself in under a minute: open any tool, open your browser's developer tools, watch the Network tab while you calculate. The list of requests stays exactly as long as it was when the page loaded — because nothing is ever sent.
Opens from any page on the desk. Esc closes it.
Every tool here is two keys away
The search palette covers all twenty tools by name, category and the words students actually use — type “need on my final”, “apa”, “birthday” or “quadratic” and it narrows as you type. Arrow keys move, Enter opens. Mid-essay, mid-panic, it is the fastest route across the desk.
Missing
What is not on this desk yet
The gaps are worth knowing about too. Some of these are waiting on care rather than time, and a couple are things this desk has decided — openly — not to build.
An essay writer — a tool that drafts essays for you would do the one thing this desk exists to support: the learning. Outlines, counts and citations, yes; the words themselves stay yours.
Handwriting and photo solving — photographing a worksheet and receiving worked answers needs image models and servers, and produces answers without the working this site insists on showing.
Saved decks and accounts — persistence means accounts, and accounts mean storing students' data. Until that can be done with the seriousness it deserves, decks here are deliberately for tonight.
Every country's grading scale — the desk uses the 4.0 convention and says so. IB points, UK classifications and percentage-only systems each deserve their own careful page rather than a rushed setting.
A timetable planner — a real one must know your courses, rooms and deadlines, which is account territory again. The pomodoro and school-days tools cover the honest, stateless part of planning.
Exam countdowns by syllabus — tempting, and impossible to do truthfully without each school's dates. The school-days calculator gives you the raw material to count down yourself, accurately.
If one of these is what you came for, say so on the contact page — the order things get built here is mostly decided by what students ask for.
Questions
The short answers
Do my grades or essays leave my device? −
No. There is no server behind any tool on this desk. Your marks are averaged by JavaScript running in the tab you are looking at, your essay is counted by the same page you pasted it into, and your flashcards exist only in this tab's memory. Close the tab and everything you entered is gone with it — which you can confirm in your browser's Network tab, where no request leaves when you calculate.
Why does my GPA here differ from my school's portal? +
Almost always the scale. This desk uses the standard table printed in the reference section above — A at 93+, plus/minus steps of 0.3, no 4.3 for an A+. Schools that start an A at 90, award 4.3, weight courses differently or round each course before averaging will each land somewhere slightly different. The method is identical everywhere; the table is local. For official purposes, your portal's figure is the one that counts, and this page's job is planning and checking, not overruling registrars.
My final exam calculator says I need more than 100%. Is it broken? +
It is not broken; it is being honest with you, possibly for the first time this term. If the marks already decided plus a perfect exam still fall short of the target, the required score mathematically exceeds the paper's maximum. The useful response is the one the tool shows next: the best course grade still available. Aiming at a real ceiling — and at the grade bands below it — is worth more in the final week than pretending the original target survives.
How accurate is the “what do I need” figure if other work is still due? +
It treats everything except the final as already decided, so outstanding homework or a pending project makes its answer provisional. The fix is a two-step: run the grade calculator with your expected marks for the remaining items to get a truer “current grade”, then feed that figure into the final exam calculator. The pair of tools is designed to chain exactly like that, in that order.
Does the word counter match Microsoft Word or Google Docs? +
Closely, not exactly — and the difference is definitional, not a bug in any of them. This page counts whitespace-separated tokens: a hyphenated compound is one word, a standalone number is one word, an em dash floating between spaces is one word. Word processors apply their own punctuation rules and can disagree by a few words in a thousand, in either direction. If a submission caps you at a hard limit, the professional habit is to finish a small margin under it on every counter, rather than exactly at it on one.
Are the citations here safe to submit as-is? +
They are a correct, consistent first draft of an entry for books, websites and journal articles — and “first draft” is doing real work in that sentence. Italics flatten when text is pasted, DOIs and edition details sit outside the quick builder, and individual lecturers have house preferences no generator can know. Generate here, then spend two minutes comparing against your course's style examples. That workflow — machine for consistency, human for the final check — is what markers actually reward.
Why do my flashcards disappear when I refresh? +
Because saving them would require storing your work somewhere — an account, a database, a server — and this desk is built to store nothing. The deck lives in the tab's memory for tonight's session. If a deck turns out to be worth keeping for the term, copy its questions and answers into a document while it is open; the two sample cards aside, nothing here was ever meant to be permanent, and the tool page says so before you build a large deck on it.
Is 25 minutes of pomodoro actually the right length? +
It is the traditional length, not a law of cognition. Twenty-five minutes suits drills, vocabulary, flashcards and problem sets — work made of many small completions. Long-form work, like drafting or multi-step proofs, often settles better at forty or fifty minutes, which is why the lengths on the timer are settings rather than doctrine. What the research-flavoured consensus supports is the alternation itself: bounded focus, real breaks, sessions counted. Choose the sprint length that your subject respects.
Can teachers use these tools in class? +
Yes — freely, on a projector or on student devices, with nothing to install and no accounts for a class to create. The worked examples on the homepage and the “how it works” panels on each tool page were written to be shown: the GPA example, the fraction working, the discriminant-first approach in the quadratic solver. If a school network blocks nothing but static pages, this site still loads, because static pages are all it is.
What does EduDish cost, and what pays for it? +
The tools are free, with no premium tier and no feature held back for payment. The site is a static build with small running costs; if advertising appears here in future it will be disclosed in the privacy policy, served around the tools rather than inside them, and blocking it will break nothing — every tool is self-contained and makes no requests of its own. Your study data is never the product: there is no account system in which it could be kept.
Which grading scale should I pick if my school uses semesters and quarters? +
The scale question and the calendar question are separate. Quarters and semesters change how many terms feed the cumulative calculator and how credits are counted, but the per-course conversion from letter to points stays the table in the reference section unless your school publishes its own. Enter each term with its own credit total — the cumulative tool weights by the credits you give it, so a lighter quarter term correctly moves your average less than a full semester does.
How do I report a wrong answer or ask for a tool? +
Use the contact page, and include the inputs you typed and the answer you expected — for calculation tools, the inputs are the bug report; “it gave the wrong GPA” without the grades and credits cannot be reproduced by anyone. Requests are read the same way: a tool that fits one page, runs entirely in a browser and needs no stored data has a real chance of being built here; one that needs your school's database does not.
Start with the sum in front of you.
One grade to check, one exam to plan for, one essay to count. Pick the shelf it lives on and get the number — then get back to the learning it was for.