Machinist Unit Reference
工作機械用ミリ・インチ換算センター
Instant bidirectional converters and fractional decimal equivalents for precision machining.
Instant Machining Unit Converter
mm
in
m/min
SFM
mm/min
IPM
bar
PSI
Fractional Drill Bit Decimal Equivalents
| Fraction | Decimal Inch | Millimeter (mm) |
|---|---|---|
| 1/64" | 0.0156" | 0.397 mm |
| 1/32" | 0.0312" | 0.794 mm |
| 3/64" | 0.0469" | 1.191 mm |
| 1/16" | 0.0625" | 1.588 mm |
| 5/64" | 0.0781" | 1.984 mm |
| 3/32" | 0.0938" | 2.381 mm |
| 7/64" | 0.1094" | 2.778 mm |
| 1/8" | 0.1250" | 3.175 mm |
| 9/64" | 0.1406" | 3.572 mm |
| 5/32" | 0.1562" | 3.969 mm |
| 11/64" | 0.1719" | 4.366 mm |
| 3/16" | 0.1875" | 4.763 mm |
| 13/64" | 0.2031" | 5.159 mm |
| 7/32" | 0.2188" | 5.556 mm |
| 15/64" | 0.2344" | 5.953 mm |
| 1/4" | 0.2500" | 6.350 mm |
| 5/16" | 0.3125" | 7.938 mm |
| 3/8" | 0.3750" | 9.525 mm |
| 7/16" | 0.4375" | 11.113 mm |
| 1/2" | 0.5000" | 12.700 mm |
| 9/16" | 0.5625" | 14.288 mm |
| 5/8" | 0.6250" | 15.875 mm |
| 3/4" | 0.7500" | 19.050 mm |
| 7/8" | 0.8750" | 22.225 mm |
| 1" | 1.0000" | 25.400 mm |