Test Score & Grade Percentage Calculator
By Santaji GadepatilinUpdated October 27, 2026
calculated
B (80–89%)
Type in any field to change it. Press × on a value to calculate that field instead.
How to use this calculator
Enter the score and the total possible. The percentage and letter grade are shown.
Formula
percentage = score ÷ total × 100
Example
42 out of 50 = 84% → B on a 10-point scale.
Frequently asked questions
How do I convert marks to a percentage?
Divide the score by the total and multiply by 100. 42 out of 50 is 84%.
Which grading scale is used?
The common US 10-point scale (A 90+, B 80–89, C 70–79, D 60–69). Your school's scale may differ.
How many marks do I need for a target?
Press × on Score and type the percentage you want.