Turn any score into a percentage and a letter grade.
Got 43 out of 50 on a test? Type in the points you earned and the points possible — Ace converts it to a percentage, a letter grade and GPA points in one step.
- ✓Instant conversion. Percentage, letter and GPA update as you type.
- ✓See the next letter up. Exactly how many more points an A− or a B+ would have taken.
- ✓Works for any total. Quizzes out of 10, exams out of 200, homework out of 37 — anything.
Grade Percentage Calculator
Enter your score to see your grade.
Letter cutoffs for this total
| Letter | Starts at | Points needed |
|---|
The full toolbox
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A single score is only one question. These tools answer the bigger ones — your course average, what you need on the final, and what your GPA works out to.
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Calculate →Final Grade Calculator
Find the exact score you need on your final exam to finish with the grade you want — or to just pass.
Calculate →GPA Calculator
Add every course with its credit hours and get your semester or cumulative GPA on the 4.0 scale.
Calculate →Weighted Grade Calculator
The deep-dive weighted average, with category breakdowns and per-assignment contributions.
Calculate →Grade Percentage Calculator
Turn any points score into a percentage and a letter grade in one step.
You're hereEZ Grader
For teachers: pick the number of questions and read off the grade for any number of wrong answers.
Open chart →Grading Scale Chart
Every letter cutoff on the standard US scale, with plus/minus bands and matching GPA values.
See chart →Grade Curve Calculator
See how a curve — flat points, percentage bump or square-root — changes a whole set of scores.
Calculate →Getting started
How to convert points to a percentage
Find your raw score
Look at the top of your graded paper or your gradebook entry: it's usually written as two numbers, like 43/50.
Enter both numbers
Points earned goes in the first box, points possible in the second. Decimals are fine — half-points count too.
Read your grade
Your percentage, letter grade and GPA points appear instantly, color-coded by band so a B reads as a B at a glance.
Check the gap
The box under the calculator shows how many points the next letter up would have taken — handy for borderline scores.
See the math
A worked example, step by step
Say you scored 43 out of 50 on a biology quiz. Here's the whole conversion, start to finish:
| Step | Calculation | Result |
|---|---|---|
| Divide earned by possible | 43 ÷ 50 | 0.86 |
| Multiply by 100 | 0.86 × 100 | 86% |
| Find the letter band | 83–86% | B |
| Grade points | 3.0 GPA | |
Two more points — 45 out of 50 — would have made it 90%, an A−. On a 50-point quiz each question is worth 2%, so small misses move the letter faster than on a 200-point exam, where each point is only 0.5%.
The percentage formula
Percentage = (points earned ÷ points possible) × 100
That's all a percentage is: the fraction of the total you earned, rescaled to 100 so scores on different totals can be compared. A 43/50 and an 86/100 are the same performance — both are 86%.
Running it backwards is just as easy: to find the points a letter needs, multiply the total by the letter's cutoff. An A− (90%) on a 120-point exam needs 0.90 × 120 = 108 points. The cutoff table inside the calculator does this for every letter automatically.
Reference
The standard grading scale
Your percentage becomes a letter grade using the US scale below. Whole-letter grading uses five wide bands (A, B, C, D, F); many schools split them into plus and minus grades for a finer GPA. Tick Use +/− letter grades in the calculator to switch scales.
| Letter | Percentage | GPA | What it means |
|---|---|---|---|
| A+ | 97–100% | 4.0 | Exceptional |
| A | 93–96% | 4.0 | Excellent |
| A− | 90–92% | 3.7 | Excellent |
| B+ | 87–89% | 3.3 | Above average |
| B | 83–86% | 3.0 | Good |
| B− | 80–82% | 2.7 | Good |
| C+ | 77–79% | 2.3 | Average |
| C | 73–76% | 2.0 | Average |
| C− | 70–72% | 1.7 | Below average |
| D+ | 67–69% | 1.3 | Poor |
| D | 63–66% | 1.0 | Poor |
| D− | 60–62% | 0.7 | Minimum pass |
| F | Below 60% | 0.0 | Failing |
The concepts
Percentages, points and letters — how they connect
The same performance can be written three ways: as raw points (43/50), as a percentage (86%), or as a letter (B). The percentage is the bridge between the other two, because it removes the size of the test from the picture.
Why percentages exist
Raw points can't be compared across assignments: is 43/50 better than 171/200? As percentages both speak the same language — 86% vs 85.5% — so gradebooks convert everything to percentages before averaging, weighting or curving it.
Small tests swing faster
One point on a 10-question quiz is worth 10% — a whole letter band. One point on a 200-point final is worth 0.5%. That's why a single careless mistake on a short quiz stings, and why teachers often weight big assessments more heavily.
Rounding at the border
Percentages rarely land on whole numbers: 17/19 is 89.47%. Whether that records as a B+ or rounds to an A− is your school's call, not the math's. This calculator shows two decimals and never rounds your letter up silently, so you see exactly where you stand.
Watch out
Common conversion mistakes
Dividing the wrong way.
It's earned ÷ possible, never possible ÷ earned. If your "percentage" comes out above 100 on a normal test, the two numbers are flipped.Forgetting dropped or bonus questions.
If your teacher dropped a question, the possible total drops too — 43 out of 49, not 50. Bonus points raise earned without raising possible, which is how scores pass 100%.Averaging percentages of different sizes.
An 86% quiz and a 92% exam don't average to 89% unless both were out of the same total. Add the raw points first, then convert once.Trusting a curved score's raw numbers.
If the test was curved, your gradebook percentage already includes the curve. Converting the raw score from the paper will understate your grade.Answers
Frequently asked questions
How do I convert points to a percentage?
Divide the points you earned by the total points possible, then multiply by 100. For example, 43 out of 50 is 43 ÷ 50 × 100 = 86%. The calculator at the top of this page does it as you type and adds your letter grade and GPA points.
What is 43 out of 50 as a grade?
43 out of 50 is 86%, which is a B on the standard US grading scale — worth 3.0 grade points. Two more points (45/50) would have made it 90%, an A−.
How many points do I need for an A?
Multiply the total points by the A cutoff. With plus/minus grading a plain A starts at 93% and an A− at 90%; on a whole-letter scale any A starts at 90%. On a 50-point test that's 45 points for an A−. The cutoff table inside the calculator lists the points for every letter at your total.
Can a grade percentage be over 100%?
Yes — when extra credit pushes your points earned above the points possible, like 52 out of 50 = 104%. Many schools cap the reported grade at 100% or at an A+, but the raw percentage can exceed it, and this calculator will show it.
What percentage is a passing grade?
On the standard scale, 60% (a D− or D) is the lowest passing grade. But many schools and programs require a C — 70% or higher — for a course to count toward a major or transfer, so check your syllabus for the cutoff that applies to you.
Does 89.5% round up to an A?
It depends on your school's rounding policy. Some teachers round .5 up, which makes 89.5% an A−; others record the exact figure, which stays a B+. This calculator always displays the unrounded percentage with two decimals so you can see exactly how close the call is.
How is this different from the EZ Grader?
The EZ Grader is built for teachers grading a whole stack of tests: set the number of questions once and read off the percentage for every possible number of wrong answers. This calculator is for one score at a time — yours — and adds the letter grade, GPA points and the gap to the next letter.
Is Ace Grade Calculator free?
Completely. No install, no account, no sign-up. Everything runs in your browser, so nothing you type is sent anywhere or stored — close the tab and it's gone.
Why students use Ace Grade Calculator
A marked test tells you points; it rarely tells you what they mean. Ace converts the score, names the letter, shows the GPA value and tells you exactly how far the next grade was — then, when your question grows from one test to the whole course, the weighted grade calculator and final grade calculator are one click away.
It's fast, it fits a phone screen, and your data stays on your device. Results are estimates based on the standard grading scale, so always confirm your official grade against your teacher's syllabus or your school's gradebook.