Grade Calculator
Find your grade from weighted categories, points earned, or the number of questions you missed on a test.
🧮 Grade Calculator
Choose how you want to calculate your grade
Results
Percentage and letter grade
| Test | Score | % | Grade |
|---|
Other Calculators
📜 Calculation History
What Is a Grade Calculator?
A grade calculator finds your current grade in a course as a percentage and a letter grade. It works in three ways: weighted categories (homework 20%, exams 40% and so on), points earned out of points possible, and test scores from the number of questions you missed, the classic EZ Grader.
Pick a method, enter your numbers, and the result updates as you type. You also get the GPA points for your letter grade on a 4.0 scale.
If you want to know what to score on your last exam instead, use the Final Grade Calculator. To turn course grades into a GPA, use the College GPA Calculator or the Cumulative GPA Calculator.
How to Use the Grade Calculator
- Choose a method. Weighted suits courses where categories count for different percentages. Points suits courses graded on total points. Test score (EZ Grader) suits tests where every question is worth the same.
- Pick your grading scale. The standard scale, with plus and minus grades, is the default. Switch to strict or lenient if your school's scale is different.
- Enter your numbers. In Weighted mode, leave the score blank for work that is not graded yet. Add rows for more assignments or tests.
- Read the result. You see your percentage, letter grade and GPA points, and the meter shows where you land. Save, share or download the result.
Grade Calculator Formulas
Each method uses one simple formula. Here is each one with a worked example.
Weighted grade
Worked Example:
- Homework (20% of the grade): 90
- Quizzes (15%): 85
- Midterm (25%): 78
- Project (10%): 92
Grade: (90 × 20 + 85 × 15 + 78 × 25 + 92 × 10) ÷ 70 = 5,945 ÷ 70 = 84.9%
That is a B on the standard scale. The weights add up to 70%, so this is your grade for the work scored so far.
Points grade
Worked Example:
- Assignment 1: 18 of 20 points
- Assignment 2: 45 of 50 points
- Assignment 3: 27 of 30 points
- Exam: 88 of 100 points
Grade: (18 + 45 + 27 + 88) ÷ (20 + 50 + 30 + 100) × 100 = 178 ÷ 200 × 100 = 89.0%
That is a B+ on the standard scale.
Test score (EZ Grader)
Worked Example:
Score: a 25-question test with 4 questions missed gives (25 − 4) ÷ 25 × 100 = 84%, a B on the standard scale.
With several tests, the calculator averages the test percentages.
Grading Scale Used by the Calculator
The standard scale uses plus and minus grades. GPA points use the common 4.0 scale.
| Grade | Percentage | GPA Points |
|---|---|---|
| A+ | 97% - 100% | 4.0 |
| A | 93% - 96.9% | 4.0 |
| A- | 90% - 92.9% | 3.7 |
| B+ | 87% - 89.9% | 3.3 |
| B | 83% - 86.9% | 3.0 |
| B- | 80% - 82.9% | 2.7 |
| C+ | 77% - 79.9% | 2.3 |
| C | 73% - 76.9% | 2.0 |
| C- | 70% - 72.9% | 1.7 |
| D+ | 67% - 69.9% | 1.3 |
| D | 65% - 66.9% | 1.0 |
| D- | 60% - 64.9% | 0.7 |
| F | Below 60% | 0.0 |
The strict scale has no plus or minus grades: an A starts at 93%, a B at 85%, a C at 77% and a D at 70%. On the lenient scale an A starts at 85%, a B at 70%, a C at 55% and a D at 40%, with plus and minus grades in between.
EZ Grader Chart: Grades by Wrong Answers
This chart shows the percentage and letter grade for common test sizes on the standard scale. The Test score (EZ Grader) mode of the calculator gives the same results for any test size.
| Wrong Answers | 20 Questions | 25 Questions | 30 Questions | 40 Questions | 50 Questions |
|---|---|---|---|---|---|
| 0 | 100% A+ | 100% A+ | 100% A+ | 100% A+ | 100% A+ |
| 1 | 95% A | 96% A | 96.7% A | 97.5% A+ | 98% A+ |
| 2 | 90% A- | 92% A- | 93.3% A | 95% A | 96% A |
| 3 | 85% B | 88% B+ | 90% A- | 92.5% A- | 94% A |
| 4 | 80% B- | 84% B | 86.7% B | 90% A- | 92% A- |
| 5 | 75% C | 80% B- | 83.3% B | 87.5% B+ | 90% A- |
| 6 | 70% C- | 76% C | 80% B- | 85% B | 88% B+ |
| 7 | 65% D | 72% C- | 76.7% C | 82.5% B- | 86% B |
| 8 | 60% D- | 68% D+ | 73.3% C | 80% B- | 84% B |
| 10 | 50% F | 60% D- | 66.7% D | 75% C | 80% B- |
Percentages are shown to one decimal place when they are not whole numbers. The letter grade comes from the exact value.
What One Wrong Answer Costs, by Test Size
Every question is worth the same share of the grade, but that share depends on how long the test is. This shows how many percentage points a single wrong answer takes off:
The formula is 100 ÷ number of questions. On a 10-question quiz one slip costs a full 10 points, while on a 100-question exam it costs 1.
Who Uses a Grade Calculator?
- Students check where they stand during the term, before a grade is final.
- Teachers grade a test quickly from the number of missed questions.
- Tutors and parents track progress over a semester.
- Homeschool families grade assignments and tests with one tool.
Common Grade Calculation Mistakes
- Typing weights as decimals. Enter 20 for 20%, not 0.2.
- Forgetting that unscored work is left out. In Weighted mode the grade reflects only the work you have scored, so check the "Based on" line.
- Treating all test questions as equal. Test score mode assumes every question is worth the same. For different point values, use Points mode.
- Using the wrong scale. Check your syllabus for your school's letter-grade cutoffs.
Limitations of This Calculator
A grade calculator is only as good as the numbers you enter. Keep these points in mind:
- Weights must match your syllabus. Confirm each category's weight there, not from memory.
- Curves and dropped grades are not applied. Remove a dropped grade from your list before you calculate.
- Extra credit. In Points mode, enter extra credit as points earned above the points possible.
- Letter-grade cutoffs differ. Use the scale that matches your school.
- Your official grade comes from your school. Treat the result as an estimate.
Frequently Asked Questions
For a weighted grade, multiply each score by its weight, add the results, and divide by the total weight. For a points-based grade, divide the total points you earned by the total points possible and multiply by 100. The calculator does both for you.
Multiply each category score by its weight, add those products, then divide by the sum of the weights. For example, scores of 90, 85, 78 and 92 with weights of 20%, 15%, 25% and 10% give 5,945 ÷ 70 = 84.9%. For the GPA version, see how to calculate weighted GPA.
Add up the points you earned, add up the points possible, divide the first total by the second, and multiply by 100. For example, 178 points earned out of 200 possible is 89.0%, which is a B+ on the standard scale.
An EZ Grader turns the number of questions you missed on a test into a percentage and a letter grade. Enter the total questions and the missed questions. The score is (total − missed) ÷ total × 100. With several tests, the calculator averages the test percentages.
The calculator uses the weights you enter and shows your grade for the work scored so far. If some work is not graded yet, leave its score blank. To see what you need on the remaining work, use the Final Grade Calculator.
The default is the standard plus-and-minus scale, where an A starts at 93%, a B at 83%, a C at 73% and a D at 65%. You can switch to a strict or lenient scale. Check your syllabus, because letter-grade cutoffs differ between schools.
Use the Final Grade Calculator. Required score = (target grade − current grade × current weight) ÷ final exam weight. It also shows how hard the required score is.
It shows your percentage to one decimal place and picks the letter grade from the exact value. Any rounding to a whole number follows your school's policy, so check it before you rely on a borderline grade.
Grade Calculator: Key Facts
- What it finds: your course grade as a percentage and a letter grade.
- Methods: weighted categories, points earned out of points possible, and test scores from questions missed (EZ Grader).
- Grading scales: standard (plus and minus), strict and lenient.
- Output: percentage to one decimal place, letter grade and GPA points on a 4.0 scale.
- Cost and privacy: free, no sign-up, and the calculation runs in your browser.
Know Your Grade, Then Plan Your Next Step
Check where you stand today, then find out what you need on your final or how it affects your GPA.
GPA Calculator Pro Team
The GPA Calculator Pro Team builds and maintains free, browser-based academic calculators and the guides that explain them. Formulas, grade scales, and worked examples are checked against how each calculation actually works before a page is published or updated, with content reviewed by Hassan, SEO Content Manager.