Instantly convert between fractional inch measurements and their decimal and metric equivalents.
Reference — 1/64″ to 1″
| Fraction | Decimal" | mm |
|---|---|---|
| 1/8" | 0.125 | 3.175 |
| 1/4" | 0.25 | 6.350 |
| 3/8" | 0.375 | 9.525 |
| 1/2" | 0.5 | 12.700 |
| 5/8" | 0.625 | 15.875 |
| 3/4" | 0.75 | 19.050 |
| 7/8" | 0.875 | 22.225 |
| 1/1" | 1. | 25.400 |
The reference table shows all common fractions (halves, quarters, eighths,
sixteenths) to 1″. The Fraction → Decimal panel accepts any fraction you can type
(e.g. 3/4, 1-1/2, 7/16) and converts it
immediately to decimal inches and millimetres.
The Decimal → Fraction panel finds the nearest fraction to the precision you choose (1/8″ through 1/64″). Useful when a drawing gives a decimal dimension and you need to set a marking gauge or dial caliper.