Grade Percentage Calculator

How to use this calculator

Enter the points earned and the total points possible to calculate the grade percentage. This is useful for homework, quizzes, tests, classwork, projects, and quick grade checks.

Example

If a quiz is worth 20 points and a student earns 18 points, enter 18 and 20. The calculator will show 90%.

Common mistakes to avoid

• Do not enter a percentage in the total points field.
• Make sure total points is greater than zero.
• Check how extra credit is handled by the teacher or school.

Different schools may use different letter-grade scales, so always follow the grading rules used by the class or school.

Who this tool helps

This calculator is useful for students checking an assignment or test score, parents helping with schoolwork, and teachers who need a quick points-to-percentage check.

When to use this tool

Use it when you know the points earned and the total points possible and want a simple percentage. For category weights or differently weighted assignments, use a weighted-grade method instead.

Frequently asked questions

Can I use it for quizzes, tests, and homework?
Yes. Any points-based score can be checked as long as you know the earned points and total possible points.

What happens with extra credit?
Follow the way your teacher counts extra credit. If earned points are higher than the regular total, the percentage may be above 100%.

Is the letter grade official?
No. Letter-grade cutoffs vary by school and class, so the percentage should be compared with the official grading scale.