Drill Bit Size Calculator
Match drill bit sizes to inch fractions, decimal equivalents, and screw gauges for woodworking and metalworking.
Drill Bit Size Calculator
Fraction
5/32"
Decimal
0.15625"
Millimeters
3.97 mm
Screw Size
#6
Complete Drill Bit Size Chart
| Fraction | Decimal | MM | Screw |
|---|---|---|---|
| 1/16" | 0.0625" | 1.59 | #0 |
| 3/32" | 0.09375" | 2.38 | #1 |
| 1/8" | 0.125" | 3.18 | #4 |
| 5/32" | 0.15625" | 3.97 | #6 |
| 3/16" | 0.1875" | 4.76 | #8 |
| 7/32" | 0.21875" | 5.56 | #10 |
| 1/4" | 0.25" | 6.35 | #12 |
| 5/16" | 0.3125" | 7.94 | 5/16 |
| 3/8" | 0.375" | 9.53 | 3/8 |
| 7/16" | 0.4375" | 11.11 | 7/16 |
| 1/2" | 0.5" | 12.7 | 1/2 |