Education calculator
Test Score Percentage Calculator
Turn a points score into a percentage grade.
Points possible must be greater than zero.
Test percentage
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How it works
Extra credit can produce a percentage above 100. Points possible must be greater than zero.
Percentage = points earned ÷ points possible × 100
Worked example
45 points out of 50 equals 90%.
How to use this tool
- Enter the known values and choose units where available.
- Check the primary result and supporting details.
- Clear or replace an input to calculate another case.
Frequently asked questions
What happens with invalid or incomplete inputs?
The result remains blank until the required inputs form a finite, meaningful calculation. Zero denominators and physically impossible negative quantities are not calculated.
Can I use decimal values?
Yes. The tool accepts decimals and keeps full precision for the calculation while rounding the displayed result for readability.