1/64 Fraction to Decimal Chart
Use this 1/64 chart when you need fine inch fractions, decimal inches, and millimeters in one place.
Printable 1/64 Chart
Use the main calculator to enter fractions, decimals, mixed inch values, or millimeters. The chart below gives quick reference values for this page.
Open Calculator1/64 Inch Fraction Chart
Every 1/64 increment from 1/64 through 1 inch.
| Fraction | Decimal | Millimeters | Nearest 1/64 |
|---|---|---|---|
| 1/64 | 0.0156 | 0.397 | 1/64 |
| 1/32 | 0.0313 | 0.794 | 1/32 |
| 3/64 | 0.0469 | 1.191 | 3/64 |
| 1/16 | 0.0625 | 1.588 | 1/16 |
| 5/64 | 0.0781 | 1.984 | 5/64 |
| 3/32 | 0.0938 | 2.381 | 3/32 |
| 7/64 | 0.1094 | 2.778 | 7/64 |
| 1/8 | 0.1250 | 3.175 | 1/8 |
| 9/64 | 0.1406 | 3.572 | 9/64 |
| 5/32 | 0.1563 | 3.969 | 5/32 |
| 11/64 | 0.1719 | 4.366 | 11/64 |
| 3/16 | 0.1875 | 4.763 | 3/16 |
| 13/64 | 0.2031 | 5.159 | 13/64 |
| 7/32 | 0.2188 | 5.556 | 7/32 |
| 15/64 | 0.2344 | 5.953 | 15/64 |
| 1/4 | 0.2500 | 6.350 | 1/4 |
| 17/64 | 0.2656 | 6.747 | 17/64 |
| 9/32 | 0.2813 | 7.144 | 9/32 |
| 19/64 | 0.2969 | 7.541 | 19/64 |
| 5/16 | 0.3125 | 7.938 | 5/16 |
| 21/64 | 0.3281 | 8.334 | 21/64 |
| 11/32 | 0.3438 | 8.731 | 11/32 |
| 23/64 | 0.3594 | 9.128 | 23/64 |
| 3/8 | 0.3750 | 9.525 | 3/8 |
| 25/64 | 0.3906 | 9.922 | 25/64 |
| 13/32 | 0.4063 | 10.319 | 13/32 |
| 27/64 | 0.4219 | 10.716 | 27/64 |
| 7/16 | 0.4375 | 11.113 | 7/16 |
| 29/64 | 0.4531 | 11.509 | 29/64 |
| 15/32 | 0.4688 | 11.906 | 15/32 |
| 31/64 | 0.4844 | 12.303 | 31/64 |
| 1/2 | 0.5000 | 12.700 | 1/2 |
| 33/64 | 0.5156 | 13.097 | 33/64 |
| 17/32 | 0.5313 | 13.494 | 17/32 |
| 35/64 | 0.5469 | 13.891 | 35/64 |
| 9/16 | 0.5625 | 14.288 | 9/16 |
| 37/64 | 0.5781 | 14.684 | 37/64 |
| 19/32 | 0.5938 | 15.081 | 19/32 |
| 39/64 | 0.6094 | 15.478 | 39/64 |
| 5/8 | 0.6250 | 15.875 | 5/8 |
| 41/64 | 0.6406 | 16.272 | 41/64 |
| 21/32 | 0.6563 | 16.669 | 21/32 |
| 43/64 | 0.6719 | 17.066 | 43/64 |
| 11/16 | 0.6875 | 17.463 | 11/16 |
| 45/64 | 0.7031 | 17.859 | 45/64 |
| 23/32 | 0.7188 | 18.256 | 23/32 |
| 47/64 | 0.7344 | 18.653 | 47/64 |
| 3/4 | 0.7500 | 19.050 | 3/4 |
| 49/64 | 0.7656 | 19.447 | 49/64 |
| 25/32 | 0.7813 | 19.844 | 25/32 |
| 51/64 | 0.7969 | 20.241 | 51/64 |
| 13/16 | 0.8125 | 20.638 | 13/16 |
| 53/64 | 0.8281 | 21.034 | 53/64 |
| 27/32 | 0.8438 | 21.431 | 27/32 |
| 55/64 | 0.8594 | 21.828 | 55/64 |
| 7/8 | 0.8750 | 22.225 | 7/8 |
| 57/64 | 0.8906 | 22.622 | 57/64 |
| 29/32 | 0.9063 | 23.019 | 29/32 |
| 59/64 | 0.9219 | 23.416 | 59/64 |
| 15/16 | 0.9375 | 23.813 | 15/16 |
| 61/64 | 0.9531 | 24.209 | 61/64 |
| 31/32 | 0.9688 | 24.606 | 31/32 |
| 63/64 | 0.9844 | 25.003 | 63/64 |
| 1 | 1.0000 | 25.400 | 1 |
Note: Values are based on 1 inch = 25.4 millimeters.
When 1/64 helps
- Use 1/64 for fine layout marks.
- Check the decimal value before machining.
- Print the table when working away from a computer.
Common values
- 16/64 simplifies to 1/4.
- 24/64 simplifies to 3/8.
- 32/64 simplifies to 1/2.
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