How to Calculate 18 out of 31 as a Percentage
Divide the numerator by the denominator, then multiply by 100. The result is the percentage score.
Step by step: 18 divided by 31 equals 0.5806 as a decimal. Multiply that by 100 and you get 58.1%. On the standard US plus/minus grading scale, 58.1% is an F grade, equal to 0.0 GPA on the 4.0 scale.
What 58.1% Means as an F Grade
Failing. A score below 60% is an F at most US institutions. The course typically does not count toward graduation credit and may need to be retaken.
At most US institutions, a score below 60% earns an F and is a failing grade. 18 out of 31 (58.1%) does not meet the standard 60% passing threshold. The course typically does not count toward graduation credit. Check your school's repeat policy: some allow grade replacement, while others average the original and retake scores.
Nearby Grade Percentages
The five fractions below have the closest percentage values to 18/31. Each links to its own grade breakdown.
| Fraction | Percentage | Letter grade | GPA (4.0) |
|---|---|---|---|
| 29 out of 50 | 58.0% | F | 0.0 |
| 32 out of 55 | 58.2% | F | 0.0 |
| 58 out of 100 | 58.0% | F | 0.0 |
| 7 out of 12 | 58.3% | F | 0.0 |
| 14 out of 24 | 58.3% | F | 0.0 |
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.