Test Score Calculator – Percentage and Grade

Test Score Percentage Calculator

Turn earned points into a percentage and find missed points.

Your inputs

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Starting values are examples. First click or keyboard focus clears an example so you can enter yours. Reset restores the examples.

Your result

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Behind the answer

Score percentage = earned ÷ available × 100

How to use this calculator

This is a points percentage, independent of letter-grade boundaries. Extra-credit scores above 100% are allowed.

Enter task, points earned, points available and review the remaining options.
Select Calculate or change a value to update the result. Read the result label and units before copying.
Use Reset to restore the worked starting values.

Formula and method

Score percentage = earned ÷ available × 100

Letter grades depend on the course’s grading policy.

Worked example

42 out of 50 points = 84%.

Questions about test score percentage calculator

What percentage is 18 out of 25?

Divide earned points by available points and multiply by 100: 18 ÷ 25 × 100 = 72%. Optional letter-grade mapping uses editable boundaries. Check those boundaries against your course rather than assuming the defaults apply.

What assumptions should I check?

Letter grades depend on the course’s grading policy.

Are my inputs saved?

Calculations run in your browser. We store only tool IDs for favorites and recent tools. A calculation link contains your inputs only when you explicitly choose to copy one.