How to calculate test grade
Score = correct ÷ total × 100
Worked example. Your score: 84%.
Example inputs — Questions correct: 42; Total questions: 50. Starting values are illustrative.
Letter grade: B (standard US scale)
From George Guju, founder of Calculyn · Educational calculator guidance, not professional advice.
How it works
Your score is the share of questions you got right. Letter grades use the common US scale: A 90+, B 80–89, C 70–79, D 60–69, F below 60.
Assumptions & limitations
- Results are rounded for display.
Formula and assumptions reviewed October 2026 by the Calculyn team. How we build our calculators
Frequently asked questions
My teacher uses a different scale.
Scales vary. Use the percentage and compare it with your class's own grading scale.