Easy Grade Calculator: Get Your Grade in Seconds
You just finished a test. You are sitting in the hallway comparing answers with your friends when someone pulls out their phone. Within ten seconds, someone says, “I got a B+.” That is what this calculator is for, that exact moment.
Two inputs. That’s it. Tell it how many questions were on the test and how many you got wrong or right (if that’s easier to count), and it spits out your percentage, your letter grade, and every single other possible outcome for that test size in the quick table below.
No sign-ups, no ads blocking your answer, no five steps you have to work through first. Just the number you need, as fast as you can get it.
Teachers, this works for you as well. More on that further down the page.
How to Use It
It really is this simple, but let’s walk through it, since a couple of small choices make a difference.
Step 1: Enter the total number of questions: This is the total on the test, not just the ones you attempted or the ones you remember. Suppose it were a 40-question multiple-choice exam; enter 40. If the test has 25 questions, enter 25. The calculator supports up to 500 questions and covers most test formats.
Step 2: Pick your mode: “# Wrong” or “# Correct.” This small detail saves you a step. After a test, some people remember how many they got wrong. Others remember how many they got right. Pick whichever number is already in your head and enter that one. The calculator figures out the other automatically.
For example, on a 30-question test: if you remember you missed 7, switch to “# Wrong” and type 7. If you remember you got 23 right, switch to “# Correct” and type 23. Same result either way, the calculator does not care which direction you come from.
Step 3: Hit Calculate: Your grade shows up instantly. Percentage, letter grade, the whole thing. If you want to see what would have happened with a different number of wrong answers, change the input and recalculate. Or scroll down to the quick table, which already shows every possible outcome.
That is genuinely the whole process. There is no step 4.
The Quick Table: Every Possible Grade, All at Once
The quick table is the part of this calculator that people actually come back for.
Once you enter the total number of questions, the table generates automatically and shows every single possible score, from getting all of them right down to getting all of them wrong. Each row shows the number wrong, the number correct, the percentage, and the letter grade.
Here is why this is useful in practice. Say it is a 20-question quiz, and you are not sure exactly how many you got right. You think it is somewhere between 15 and 18, but you will not know for sure until the professor posts grades. Instead of running the calculator four separate times, you scroll the table. 15 correct = 75% (C). 16 correct = 80% (B-). 17 correct = 85% (B). 18 correct = 90% (A-). Now you know the full range of what is possible without doing anything extra.
This also comes in handy when a whole group of friends is comparing scores after a test. One person enters the total questions, and everyone in the group can then view their own score on the same table. It takes about three seconds per person. I used to do this in the hallway after exams. Someone would pull this up on their phone, and the whole group would scroll down to their number.
Teachers use this table differently. When you are grading a stack of tests, and you want a quick reference for what each score means in letter-grade terms, this table is it. Pin it open on your phone or a second monitor while you are marking papers. No math required in the moment, match the number of correct answers to the row, and you have got your grade.
One thing worth noting: the table updates every time you change the total number of questions. If you are grading tests of different lengths in the same session, swap the total, and the entire table regenerates. It is not tied to a specific test. It is a general-purpose lookup tool that adapts to any test size you throw at it.
The EZ Grader: A Quick Trip Down Memory Lane
If you have been a teacher for more than a decade, you probably remember the physical EZ Grader. It was a small plastic strip, similar to a ruler, with a color-coded scale printed on it. You would line up the number of correct answers with the total number of questions, and a little window showed you the percentage and letter grade. Teachers carried them in their pockets. They were everywhere in classrooms from the 1970s through the early 2000s.
This calculator is essentially the digital version of that tool. Same idea, same speed, same simplicity, but without the physical strip, without the limited question ranges printed on it, and without the rounding errors that came from trying to eyeball a tiny scale.
The original EZ Graders typically covered tests from about 10 to 50 questions, and the scales were printed in fixed increments. If your test did not match one of the pre-printed ranges, you were out of luck or had to estimate. This calculator supports test sizes up to 500 questions, calculates to two decimal places, and automatically generates the full lookup table.
There is a reason the EZ Grader became such an iconic teacher tool: grading speed matters. When you are sitting down to mark 30 tests after school on a Tuesday, you do not want to do mental math for every single one. The physical strip solved that problem elegantly for its time. This does the same thing on your phone, with no size limitations, and the added benefit of sharing results instantly with students or colleagues.
If you grew up using EZ Graders in your classroom and you are looking for the digital equivalent, this is it. Same philosophy, just updated for how we actually work now.
Students vs. Teachers: Two Different Use Cases
Both students and teachers use this calculator, but the way each group uses it is quite different. It is worth understanding both, because the features that matter most depend on which side of the grading you’re on.
If you are a student, the calculator is about one thing: finding out your grade as fast as possible after a test. You already know roughly how many you got right or wrong. You need the number confirmed. The main result card at the top gives you that instantly: the percentage, the letter grade, and “done”. The quick table is a bonus if you are not 100% sure of your count and want to see the range of possibilities.
If you are a teacher, the calculator is a grading tool. You use it while you are actually marking papers, not after the fact. The quick table is your primary feature; it serves as the reference sheet you keep open while you work through a stack of tests. You enter the total number of questions once, and then every test you grade requires you to find the correct row. No calculator needed at the moment. No mental math. Just match and move.
Teachers also tend to use the threshold editing feature more frequently than students. If your grading scale does not match the standard defaults, and many do not, every professor sets their own cutoffs; you can adjust every letter grade boundary to match your syllabus. Once you have set it up, the quick table reflects your actual scale, not some generic one.
Both groups benefit from the speed. Whether you are a sophomore checking your quiz grade between classes or a teacher grading 35 essays on a Sunday afternoon, the fewer steps between you and the answer, the better.
Grading Schemes: Beyond the US Letter Scale
The calculator defaults to the standard US letter-grade scale, but not everyone uses it. If you are at a university outside the US or taking courses that use a different grading framework, you can switch schemes using the dropdown.
The four options are:
US Letters: A+ through F, the familiar scale used at most American colleges and high schools. This is the default.
UK Classes: First, 2:1, 2:2, Third, and Fail. If you are at a British university, this is your scale. A First requires 70% or above, a 2:1 starts at 60%, and so on. The thresholds are built in but adjustable if your institution uses slightly different cutoffs.
ECTS: The European grading system uses A-F with its own threshold structure. Select this if you are at a European university or need to convert scores into ECTS-compatible grades.
Australian: HD (High Distinction), D (Distinction), CR (Credit), P (Pass), NN (Not Negotiable). Australian universities each have their own specific boundaries, so the threshold editing feature is especially handy here to adjust once for your institution, and it stays set for that scheme.
Switching schemes does not change anything about how you use the calculator. The inputs stay the same. Only the letter grade labels and boundaries change. If you’re grading tests at a UK university, select UK Classes, enter your total questions, and the quick table automatically labels everything in First/2:1/2:2/Third/Fail terms.
Editing Thresholds: Making It Match Your Actual Grading Scale
Not every professor uses the exact same cutoffs. Some use 90/80/70/60. Others use 93/83/73/63. A handful have completely custom scales that do not follow any standard pattern. If the calculator uses incorrect cutoffs, every letter grade it shows you may be incorrect.
The “Edit thresholds” button opens a panel where you can adjust the minimum percentage for every letter grade in the current scheme. Change whatever needs changing to match your professor’s syllabus, hit Calculate, and both the result and the quick table update to reflect your actual grading scale.
This matters more than it might seem. The difference between an A- at 90% and 92% is two full percentage points, which on a 20-question test is the difference between getting one more question right or wrong. If your calculator is using the wrong boundary, it could show you a B+ when you actually earned an A-.
The “Reset thresholds” button restores the defaults for that scheme if you change your mind or make a mistake. And threshold changes only apply to the scheme you currently have selected; switching to a different grading system resets to that system’s standard boundaries.
Once you have set up thresholds for your class, they stay set as long as you’re on the page. If you are grading multiple tests for the same course in a single session, you only need to configure it once.
Why “Easy” Actually Means Something Here
A lot of grade calculators call themselves “easy.” It has become one of those generic marketing terms that no longer mean much. So what actually makes this one easy, and how is it different from the other calculators on your site?
The answer comes down to how many decisions you have to make before you get your grade. On a more full-featured calculator, like the grade calculator used for tracking an entire course, you are entering categories, weights, multiple assignments, and grading formats. That is the right tool for that job, but it is not what you need when you just finished a quiz and want to know your score.
This calculator strips everything down to the bare minimum. One number in (total questions), one number in (right or wrong), one number out (your grade). There is no weight to set. No category to create. No format to choose. The only decision you make is whether to enter how many you got right or how many you got wrong, and that is just picking whichever number you already know.
The quick table takes it a step further. Once you have entered the total number of questions, you do not even need to know your exact score to get useful information. You can see the full landscape of possible grades at a glance. That is genuinely easy in a way that most calculators are not.
Compare that to pulling out a physical calculator and doing (correct ÷ total) × 100 in your head after every single test. This does the same math, instantly, for every possible score, without you having to think about it. That is what “easy” actually means here, not marketing copy, but a real reduction in the number of steps between you and your answer.
When to Use This vs. Other Calculators
This calculator is purpose-built for one specific moment: you just took a test, and you want your grade right now. It is not intended to replace the other tools on this site; it is intended to complement them in a different situation.
Here is a quick guide to when each calculator is the right choice:
Use this easy grade calculator when you have a single test or quiz score and want the percentage and letter grade. Two inputs, instant answer. This is the “I just walked out of an exam” tool.
Use the full grade calculator when you are tracking your grade across an entire course with multiple assignments, categories, and weights. That tool handles the complexity of a full semester. Use it at the start of the semester and check back regularly.
Use the final grade calculator when finals week hits and you need to know what score you need on the final exam to hit your target grade. That is a completely different question, and a completely different calculator.
The easy grade calculator and the full grade calculator are not competitors. They are different tools for different moments. One is for the second after a test ends. The other is for the weeks and months of a semester. Using both together actually makes the most sense. Check your individual test scores here as you go, and feed them into the full calculator to track where you stand in the course over time.
FAQ: Easy Grade Calculator
What is the difference between this and a regular grade calculator?
This calculator does one thing: convert a test score (number right or wrong out of a total) into a percentage and letter grade. A regular grade calculator typically handles multiple assignments, weighted categories, and full-course tracking. This version is optimized for the fastest possible lookup for a single test or quiz.
Can I use this for tests with partial credit?
This calculator supports whole-number inputs, the total number of questions, and the number of right or wrong answers. If your test has partial credit, you would need to figure out your effective score first (for example, if partial credit gives you 0.5 for a partially correct answer, count that as 0.5 toward your correct total). The calculator itself does not directly handle partial credit scoring.
How does the quick table work?
Once you enter the total number of questions, the quick table automatically generates every possible score, from 0 correct all the way up to all correct. Each row shows the number of wrong, the number of correct, the percentage, and the letter grade. It updates every time you change the total number of questions or the grading scheme.
What if my professor uses a non-standard grading scale?
Click “Edit thresholds” to adjust the minimum percentage for each letter grade. Change whatever boundaries don’t match your professor’s syllabus, and both the result and the quick table will update to reflect the correct scale.
Does this work for tests with more than 100 questions?
Yes. The calculator supports up to 500 questions. Enter any total between 1 and 500, and it works the same way.
Is this calculator useful for teachers?
Absolutely. Teachers use it primarily as a grading reference: enter the total number of questions on a test, and the quick table becomes a lookup chart for every possible score. No mental math needed while marking papers. The threshold editing feature is also particularly useful for teachers who use custom grading scales.
What does “rounding: nearest” mean?
The calculator rounds percentages to two decimal places using standard rounding (if the third decimal is 5 or above, it rounds up). So 74.995% becomes 75.00%, and 74.994% stays at 74.99%. This is the most common rounding method used in academic grading.
Can I share my result?
The share buttons let you post to Facebook, X, LinkedIn, or WhatsApp, or copy a shareable link. The link preserves your inputs, so anyone who opens it will see the same calculation.
What grading systems does this support?
US Letters (A+ through F), UK Classes (First/2:1/2:2/Third/Fail), ECTS (A through F/FX), and Australian (HD/D/CR/P/NN). Switch between them using the dropdown, and the quick table updates automatically.
Is my information private?
The calculator runs in your browser. No test scores or personal data are stored or transmitted anywhere unless you actively click a share button.
Related Tools
- Grade Calculator: For tracking your full course grade across the semester with multiple weighted categories. Use this easy calculator for individual test scores, then feed those scores into the full grade calculator to see where you stand in the course.
- Final Grade Calculator: When finals week arrives, you need to know what score you need on your final exam to hit your target grade: a completely different question, a completely different tool.
The best grade calculator is the one you will actually use. And right after a test, when you are in the hallway or walking to your next class, you are not going to open a complicated tool with five different input fields. You want something that gives you an answer in the time it takes to check a text message.
That is what this is. Two inputs. One answer. A table showing every other possibility, just in case. No friction, no guessing, no unnecessary steps.
Enter your score. Get your grade. Move on with your day.