Online School Grade Calculator
Enter the score you got and the total possible to get the percentage and a letter grade instantly — handy for marking tests and assignments. Calculated in your browser.
- 100% free
- Private & safe
- Runs in your browser
Why use Grade Calculator?
Grade Calculator gives you accurate results instantly, with the underlying formula shown so you can trust the numbers.
- Runs instantly in your browser — nothing to install, nothing uploaded.
- Completely free, with no account, no watermarks and no usage limits.
- Output: percentage + letter grade
- Enter the score obtained.
- Works on any device — desktop, tablet and phone — and is fully keyboard accessible.
How to use Grade Calculator
- Enter the score obtained.
- Enter the total possible.
- See the percentage and letter grade.
- Adjust as needed.
Examples
- 42 out of 50 is 84% (B).
- Grading a quiz.
Formulas
- Output: percentage + letter grade
Limitations
- Uses a common percentage-to-letter mapping; grading scales vary.
Frequently asked questions
What scale is used?
A common US letter-grade mapping; adjust for your own.
Uploaded?
No — local only.
Weighted grades?
Use the GPA tool for credit-weighting.
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