Inches to Millimeters Conversion Calculator
Convert fractional and/or decimal inches to metric mm - and vice versa. 1 inch (in) = 25.4 millimeter (mm)
| Fractional | Decimal (in) | Millimeters (mm) |
|---|---|---|
| 1/64 | 0.0156 | 0.3969 |
| 1/32 | 0.0313 | 0.7938 |
| 3/64 | 0.0469 | 1.1906 |
| 1/16 | 0.0625 | 1.5875 |
| 5/64 | 0.0781 | 1.9844 |
| 3/32 | 0.0938 | 2.3813 |
| 7/64 | 0.1094 | 2.7781 |
| 1/8 | 0.1250 | 3.1750 |
| 9/64 | 0.1406 | 3.5719 |
| 5/32 | 0.1563 | 3.9688 |
| 11/64 | 0.1719 | 4.3656 |
| 3/16 | 0.1875 | 4.7625 |
| 13/64 | 0.2031 | 5.1594 |
| 7/32 | 0.2188 | 5.5563 |
| 15/64 | 0.2344 | 5.9531 |
| 1/4 | 0.2500 | 6.3500 |
| 17/64 | 0.2656 | 6.7469 |
| 9/32 | 0.2813 | 7.1438 |
| 19/64 | 0.2969 | 7.5406 |
| 5/16 | 0.3125 | 7.9375 |
| 21/64 | 0.3281 | 8.3344 |
| 11/32 | 0.3438 | 8.7313 |
| 23/64 | 0.3594 | 9.1281 |
| 3/8 | 0.3750 | 9.5250 |
| 25/64 | 0.3906 | 9.9219 |
| 13/32 | 0.4063 | 10.3188 |
| 27/64 | 0.4219 | 10.7156 |
| 7/16 | 0.4375 | 11.1125 |
| 29/64 | 0.4531 | 11.5094 |
| 15/32 | 0.4688 | 11.9063 |
| 31/64 | 0.4844 | 12.3031 |
| 1/2 | 0.5000 | 12.7000 |
| 33/64 | 0.5156 | 13.0969 |
| 17/32 | 0.5313 | 13.4938 |
| 35/64 | 0.5469 | 13.8906 |
| 9/16 | 0.5625 | 14.2875 |
| 37/64 | 0.5781 | 14.6844 |
| 19/32 | 0.5938 | 15.0813 |
| 39/64 | 0.6094 | 15.4781 |
| 5/8 | 0.6250 | 15.8750 |
| 41/64 | 0.6406 | 16.2719 |
| 21/32 | 0.6563 | 16.6688 |
| 43/64 | 0.6719 | 17.0656 |
| 11/16 | 0.6875 | 17.4625 |
| 45/64 | 0.7031 | 17.8594 |
| 23/32 | 0.7188 | 18.2563 |
| 47/64 | 0.7344 | 18.6531 |
| 3/4 | 0.7500 | 19.0500 |
| 49/64 | 0.7656 | 19.4469 |
| 25/32 | 0.7813 | 19.8438 |
| 51/64 | 0.7969 | 20.2406 |
| 13/16 | 0.8125 | 20.6375 |
| 53/64 | 0.8281 | 21.0344 |
| 27/32 | 0.8438 | 21.4313 |
| 55/64 | 0.8594 | 21.8281 |
| 7/8 | 0.8750 | 22.2250 |
| 57/64 | 0.89063 | 22.6219 |
| 29/32 | 0.90625 | 23.0188 |
| 59/64 | 0.92188 | 23.4156 |
| 15/16 | 0.93750 | 23.8125 |
| 61/64 | 0.95313 | 24.2094 |
| 31/32 | 0.96875 | 24.6063 |
| 63/64 | 0.98438 | 25.0031 |
| 1 | 1.000 | 25.40 |
| 1 1/4 | 1.2500 | 31.7500 |
| 1 1/2 | 1.5000 | 38.1000 |
| 1 3/4 | 1.7500 | 44.4500 |
| 2 | 2.0000 | 50.8000 |
| 2 1/4 | 2.2500 | 57.1500 |
| 2 1/2 | 2.5000 | 63.5000 |
| 2 3/4 | 2.7500 | 69.8500 |
| 3 | 3.0000 | 76.2000 |
| 3 1/2 | 3.5000 | 88.9000 |
| 4 | 4.0000 | 101.6000 |
| 4 1/2 | 4.5000 | 114.3000 |
| 5 | 5.0000 | 127.0000 |
| 6 | 6.0000 | 152.4000 |
| 8 | 8.0000 | 203.2000 |
| 10 | 10.0000 | 254.0000 |
| 20 | 20.0000 | 508.0000 |
| 30 | 30.0000 | 762.0000 |
| 40 | 40.0000 | 1016.000 |
| 60 | 60.0000 | 1524.000 |
| 80 | 80.0000 | 2032.000 |
| 100 | 100.0000 | 2540.000 |