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Test Grade Calculator

Convert points to percentage and letter grade, or percentage to letter grade.

Enter Values

Calculation Type Code

Points Earned

Total Points

Percentage Grade

Letter Grade Code

Grading Scale Code

Result

Enter values above and click Calculate to see your result.

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Formula

Percentage = points earned / total points x 100

The calculator converts between points, percentage, and letter grade by selected grading scale.

Worked Example

42 points out of 50 equals 84 percent and corresponding letter grade.

Converting Test Scores to Grades

This calculator converts raw test scores (points earned out of total points) into percentage grades and their corresponding letter grades, supporting multiple grading scale systems.

Standard US grading: A = 90-100%, B = 80-89%, C = 70-79%, D = 60-69%, F = below 60%
Some schools use plus/minus grades: A+ = 97-100%, A = 93-96%, A- = 90-92%, and so on
Points-to-percentage conversion: divide points earned by total possible points and multiply by 100
You can also enter a percentage directly to find the corresponding letter grade on your school grading scale

Different schools and countries use different grading scales. Check your institution specific scale for the most accurate grade conversion.

You can also calculate changes using our Final Grade Calculator, Marks Percentage Calculator or Grade Average Calculator.

Frequently Asked Questions

Does this support different grading scales?

Yes. The calculator includes standard US grading (10-point scale), plus/minus grading, and alternative scale options. Select the one that matches your school system.

Can I convert from percentage to letter grade?

Yes. Enter a percentage directly and the calculator will return the corresponding letter grade on the selected grading scale.

What if my teacher uses a custom grading scale?

If your school uses non-standard cutoffs (like 93 for an A instead of 90), the result may differ. Use the closest matching scale option or manually compare to your syllabus.

How do I calculate my percentage from points?

Divide points earned by total possible points, then multiply by 100. For example, 42 out of 50 = (42/50) x 100 = 84%.

AI Assistant

Ask about this calculator

I can help you understand the test grade calculator formula, interpret your results, and answer follow-up questions.

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