CalculynQuick answer
42 correct out of 50 is 84% — a B.
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.
Formula
Score = correct ÷ total × 100
Assumptions & limitations
- Results are rounded for display.
Frequently asked questions
My teacher uses a different scale.
Scales vary. Use the percentage and compare it with your class's own grading scale.