Calculate Your Grade
Use points for assignments and classes, or switch to questions for tests and quizzes.
Custom Grade Scale
Score-to-Grade Table
This table uses your current total possible points/questions and selected grading scale.
| Correct / earned | Missed | Percentage | Letter grade |
|---|
How to Calculate a Grade
Divide the points you earned by the total points possible, then multiply by 100. The result is your percentage grade.
Grade percentage = (points earned ÷ points possible) × 100Grade Calculator for Tests and Quizzes
For a test, enter the number of questions you answered correctly and the total number of questions. The calculator also shows how many you missed and converts the score into a letter grade using your selected scale.
How Many Questions Can I Miss?
Enter your target percentage. The calculator determines the minimum number of correct answers needed, then shows how many questions you can miss while still reaching that target.
For example, on a 50-question test with a 90% target, you need at least 45 correct answers. That means you can miss up to 5 questions.
What Grade Is X Out of Y?
To find the grade for any score, divide the points or questions you got right by the total, then multiply by 100. For example, 12 out of 14 is 12 ÷ 14 = 0.857, which is 85.71%. On the common US +/- scale that is a B. Type any score into the calculator above to check it with your own school's scale.
Quick answers for scores students often look up (common US +/- scale, no rounding up):
| Score | Percentage | Letter grade |
|---|---|---|
| 8 out of 10 | 80.00% | B− |
| 12 out of 14 | 85.71% | B |
| 11 out of 14 | 78.57% | C+ |
| 10 out of 14 | 71.43% | C− |
| 14 out of 20 | 70.00% | C− |
| 17 out of 20 | 85.00% | B |
| 18 out of 21 | 85.71% | B |
| 21 out of 25 | 84.00% | B |
| 13 out of 25 | 52.00% | F |
| 27 out of 30 | 90.00% | A− |
| 33 out of 34 | 97.06% | A+ |
| 36 out of 40 | 90.00% | A− |
| 45 out of 50 | 90.00% | A− |
Grading Scale by Number of Questions
The minimum number correct for each letter on a 90/80/70/60 scale. If your test has a different number of questions, enter it as the total in the calculator and use the score-to-grade table.
| Total questions | A (90%+) | B (80%+) | C (70%+) | D (60%+) |
|---|---|---|---|---|
| 10 | 9 | 8 | 7 | 6 |
| 14 | 13 | 12 | 10 | 9 |
| 20 | 18 | 16 | 14 | 12 |
| 25 | 23 | 20 | 18 | 15 |
| 30 | 27 | 24 | 21 | 18 |
| 40 | 36 | 32 | 28 | 24 |
| 50 | 45 | 40 | 35 | 30 |
Some teachers round up (for example, 89.5% becomes 90%) and some schools use different cutoffs, such as 94% for an A. Your teacher's syllabus has the final say.
Assignment Grade Calculator
This page also works as an assignment grade calculator. If an assignment is worth 80 points and you earned 68, enter 68 as points earned and 80 as points possible. Your grade is 85%.
Class Grade Calculator vs Weighted Grade Calculator
If you only need to convert one score into a percentage and letter grade, use this page. If your class has homework, quizzes, projects and exams with different weights, use the Weighted Grade Calculator.
Need to Know What You Need on Your Final?
If you already know your current course grade and final exam weight, use the Final Grade Calculator to calculate the exact score needed on the final.
Common Grade Scales
Schools do not all use the same grading scale. The default +/- scale in this calculator is only a common reference. Use the custom scale option if your school has different cutoffs.
Frequently Asked Questions
How do I turn points into a percentage grade?
Divide earned points by total possible points and multiply by 100.
How do I calculate a test grade?
Divide questions correct by total questions and multiply by 100. The questions mode does this automatically.
How many questions can I miss and still get an A?
Enter the percentage required for an A as your target. The calculator shows the maximum number of questions you can miss while still reaching that percentage.
Can I use a custom grading scale?
Yes. Choose Custom scale and enter the minimum percentages for A, B, C and D.
What grade is 12 out of 14?
12 out of 14 is 85.71%, which is a B on the common US +/- scale (a B on a simple 90/80/70/60 scale too).
How many questions can I miss on a 14-question test and still get an A?
With an A starting at 90%, you need at least 13 correct (12.6 rounded up), so you can miss 1 question. 12 out of 14 is 85.71%, a B.
Does this calculate weighted class grades?
No. For categories with different weights, use the Weighted Grade Calculator.
Is this grade calculator free?
Yes. It runs in your browser and requires no sign-up.