Free grading tools

Simple calculators for teachers and students. They all work in your browser, with no sign-up.

For teachers

Quick Grader

Turn the number wrong into a percentage and letter grade. Includes a printable grading chart.

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Grading scales

Letter Grade to Percentage

See the percentage range and GPA for every letter grade, from A+ to F.

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For students

Final Grade Calculator

Find the score you need on your final exam to get the grade you want.

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Weighted Grade Calculator

Work out your grade when assignments count for different amounts.

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Want the how and why?

Our guides explain grading in plain English, with worked examples.