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Final Grade Calculator
Find the score you need on your final exam to reach the course grade you want.
Test Grade Calculator
Turn a test score into a percentage and letter grade, and see the grade for every number of wrong answers.
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How to use this calculator
Enter your values. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.
How test grades are calculated
grade % = correct answers ÷ total questions × 100
If questions carry different points, use points instead: points earned ÷ points possible × 100. Example: 17 out of 20 = 17 ÷ 20 × 100 = 85%, a B.
Grading scale used
Letter grades use the common US 10-point scale. Your school may use a different scale (for example with plus/minus grades or a 7-point scale), so check your syllabus.
| Letter | Percent |
|---|---|
| A | 90–100% |
| B | 80–89% |
| C | 70–79% |
| D | 60–69% |
| F | Below 60% |
Teachers: a quick grading table
Enter the number of questions and the calculator lists the percentage and letter for every possible number of wrong answers (up to 60), so you can grade a stack of papers without recalculating.
Frequently asked questions
What is 13 out of 15 as a grade?
13 ÷ 15 = 86.67%, a B on the 10-point scale.
What is 17 out of 20?
85%, a B.
What is 15 out of 20?
75%, a C.
How do I calculate a weighted grade?
Multiply each score by its weight and add them up. Use the Weighted Grade Calculator (coming soon) or the Final Grade Calculator.
About this tool
- Written by
- [Author: to be assigned]
- Reviewed by
- Formula tests passed · human review pending
- Last updated
- 31 Oct 2026
See our methodology and editorial policy. Think something’s off? Report an error with this tool.
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