How to use Grade Percentage Calculator

The short answer

To calculate a grade percentage, divide marks obtained by total marks and multiply by 100: 245 out of 300 is 81.67%. Add several subjects to get the overall percentage, with the letter grade and 4.0 GPA equivalent.

It runs in your browser. What you enter is not uploaded.

How to use it

Enter your values in the fields; defaults show a worked example.

Pick the units or options that apply to you.

Read the result, which updates instantly as you type.

Check the formula note under the result to see exactly how it was worked out.

Limits worth knowing

How do I calculate percentage of marks? (Marks obtained ÷ maximum marks) × 100. 88 out of 100 is 88%.

What letter grade is 85%? B on the common US scale (83–86%).