Grade Calculator
Turn marks earned and total marks into a percentage and a letter grade.
Quick answer: enter your details below and click Calculate — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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Calculators
Enter your details below.
How to use
- Enter the marks you earned.
- Enter the total marks available.
- Press Calculate to see your percentage and letter grade.
About this tool
Divide the marks earned by the total marks and multiply by 100 to get the percentage, then map it to a letter grade: A for 90 and above, B for 80 to 89, C for 70 to 79, D for 60 to 69, and F below 60. It is a quick way to make sense of any single test or assignment score.
Frequently asked questions
What grading scale does this use?
The common scale where A starts at 90, B at 80, C at 70 and D at 60. Your school or institution may use different boundaries.
Can earned marks be higher than total marks?
No, that would give a percentage above 100, so the calculator asks you to check the figures in that case.