Fraction Decimal Percent Chart
Use this chart to compare common fractions with decimal and percent values for quick classroom or shop reference.
Fraction Decimal Percent Lookup
Use the main calculator to enter fractions, decimals, mixed inch values, or millimeters. The chart below gives quick reference values for this page.
Open CalculatorFraction, Decimal, and Percent Chart
Common fractions converted to decimals and percentages.
| Fraction | Decimal | Percent | Millimeters per inch |
|---|---|---|---|
| 1/8 | 0.1250 | 12.5% | 3.175 |
| 1/4 | 0.2500 | 25.0% | 6.350 |
| 3/8 | 0.3750 | 37.5% | 9.525 |
| 1/2 | 0.5000 | 50.0% | 12.700 |
| 5/8 | 0.6250 | 62.5% | 15.875 |
| 3/4 | 0.7500 | 75.0% | 19.050 |
| 7/8 | 0.8750 | 87.5% | 22.225 |
| 1 | 1.0000 | 100% | 25.400 |
Note: Values are based on 1 inch = 25.4 millimeters.
Decimal and percent
- A decimal shows the value out of 1.
- A percent shows the value out of 100.
- 1/4 equals 0.25 and 25%.
Where this chart helps
- Use it for classroom checks.
- Use it for quick ratio estimates.
- Use the inch chart when measurements matter.
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