Grade Percentage Calculator
Convert any test score to a percentage and letter grade — or find what score you need to hit a target grade. Instant, free, and private.
Popular Score-to-Percentage Conversions
Instant answers to the most-searched score conversion questions.
Out of 20
| Score | % | Grade |
|---|---|---|
| 20/20 | 100% | A+ |
| 18/20 | 90% | A− |
| 16/20 | 80% | B− |
| 15/20 | 75% | C |
| 14/20 | 70% | C− |
| 12/20 | 60% | D− |
Out of 25
| Score | % | Grade |
|---|---|---|
| 25/25 | 100% | A+ |
| 23/25 | 92% | A− |
| 20/25 | 80% | B− |
| 18/25 | 72% | C− |
| 15/25 | 60% | D− |
| 12/25 | 48% | F |
Out of 50
| Score | % | Grade |
|---|---|---|
| 50/50 | 100% | A+ |
| 45/50 | 90% | A− |
| 42/50 | 84% | B |
| 40/50 | 80% | B− |
| 35/50 | 70% | C− |
| 30/50 | 60% | D− |
The Formula
Example: Scored 42 out of 50?
(42 ÷ 50) × 100 = 84% = B
Reverse: Need a 90% on a 50-point test?
(90 ÷ 100) × 50 = 45 points needed
Frequently Asked Questions
How do I calculate my grade percentage?
Divide points earned by total possible, then multiply by 100.
Example: 42 out of 50 = (42 ÷ 50) × 100 = 84%, which is a B.
What percentage is 15 out of 20?
15 out of 20 = (15 ÷ 20) × 100 = 75%. On the standard US grading scale, 75% is a C (2.0 GPA).
What grade is 70 percent?
70% is a C− on the standard US grading scale, carrying a GPA value of 1.7. The C− range spans from 70% to 72%. A score of 73% or higher would be a C.
What percentage do I need to get an A?
On the standard US grading scale, you need at least 93% for an A, or 97% for an A+. An A− requires 90–92%. Scales vary by institution.
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