How to Calculate 20 out of 20 as a Percentage
Divide the numerator by the denominator, then multiply by 100. The result is the percentage score.
Step by step: 20 divided by 20 equals 1 as a decimal. Multiply that by 100 and you get 100.0%. On the standard US plus/minus grading scale, 100.0% is an A+ grade, equal to 4.0 GPA on the 4.0 scale.
What 100.0% Means as an A+ Grade
Excellent standing. A+ is the top grade on the US scale; it meets every Dean's List and merit scholarship threshold.
At most US colleges and high schools, the minimum passing score is 60%. A score of 100.0% clears that threshold, so 20 out of 20 is a passing grade. Always verify with your institution, as some programs require a C or higher (70%) for courses that count toward major requirements.
Nearby Grade Percentages
The five fractions below have the closest percentage values to 20/20. Each links to its own grade breakdown.
| Fraction | Percentage | Letter grade | GPA (4.0) |
|---|---|---|---|
| 5 out of 5 | 100.0% | A+ | 4.0 |
| 10 out of 10 | 100.0% | A+ | 4.0 |
| 12 out of 12 | 100.0% | A+ | 4.0 |
| 15 out of 15 | 100.0% | A+ | 4.0 |
| 17 out of 17 | 100.0% | A+ | 4.0 |
Use the grade percentage reference for the complete letter-grade scale, percentage ranges, GPA values, and conversion formula. To convert any score directly, try the test grade calculator.