DRILL BIBLE
DRILL SIZE DECIMAL EQUIVALENTS CHART
| SIZE | DECIMAL |
|---|---|
| #80 | 0.0135" |
| #79 | 0.0145" |
| #78 | 0.0160" |
| #77 | 0.0180" |
| #76 | 0.0200" |
| #75 | 0.0210" |
| #74 | 0.0225" |
| #73 | 0.0240" |
| #72 | 0.0250" |
| #71 | 0.0260" |
| #70 | 0.0280" |
| #69 | 0.0292" |
| #68 | 0.0310" |
| #67 | 0.0320" |
| #66 | 0.0330" |
| #65 | 0.0350" |
| #64 | 0.0360" |
| #63 | 0.0370" |
| #62 | 0.0380" |
| #61 | 0.0390" |
| #60 | 0.0400" |
| #59 | 0.0410" |
| #58 | 0.0420" |
| #57 | 0.0430" |
| #56 | 0.0465" |
| #55 | 0.0520" |
| #54 | 0.0550" |
| #53 | 0.0595" |
| #52 | 0.0635" |
| #51 | 0.0670" |
| #50 | 0.0700" |
| #49 | 0.0730" |
| #48 | 0.0760" |
| #47 | 0.0785" |
| #46 | 0.0810" |
| #45 | 0.0820" |
| #44 | 0.0860" |
| #43 | 0.0890" |
| #42 | 0.0935" |
| #41 | 0.0960" |
| SIZE | DECIMAL |
|---|---|
| #40 | 0.0980" |
| #39 | 0.0995" |
| #38 | 0.1015" |
| #37 | 0.1040" |
| #36 | 0.1065" |
| #35 | 0.1100" |
| #34 | 0.1110" |
| #33 | 0.1130" |
| #32 | 0.1160" |
| #31 | 0.1200" |
| #30 | 0.1285" |
| #29 | 0.1360" |
| #28 | 0.1405" |
| #27 | 0.1440" |
| #26 | 0.1470" |
| #25 | 0.1495" |
| #24 | 0.1520" |
| #23 | 0.1540" |
| #22 | 0.1570" |
| #21 | 0.1590" |
| #20 | 0.1610" |
| #19 | 0.1660" |
| #18 | 0.1695" |
| #17 | 0.1730" |
| #16 | 0.1770" |
| #15 | 0.1800" |
| #14 | 0.1820" |
| #13 | 0.1850" |
| #12 | 0.1890" |
| #11 | 0.1910" |
| #10 | 0.1935" |
| #9 | 0.1960" |
| #8 | 0.1990" |
| #7 | 0.2010" |
| #6 | 0.2040" |
| #5 | 0.2055" |
| #4 | 0.2090" |
| #3 | 0.2130" |
| #2 | 0.2210" |
| #1 | 0.2280" |
| SIZE | DECIMAL |
|---|---|
| A | 0.2340" |
| B | 0.2380" |
| C | 0.2420" |
| D | 0.2460" |
| E | 0.2500" |
| F | 0.2570" |
| G | 0.2610" |
| H | 0.2660" |
| I | 0.2720" |
| J | 0.2770" |
| K | 0.2810" |
| L | 0.2900" |
| M | 0.2950" |
| N | 0.3020" |
| O | 0.3160" |
| P | 0.3230" |
| Q | 0.3320" |
| R | 0.3390" |
| S | 0.3480" |
| T | 0.3580" |
| U | 0.3680" |
| V | 0.3770" |
| W | 0.3860" |
| X | 0.3970" |
| Y | 0.4040" |
| Z | 0.4130" |
| SIZE | DECIMAL |
|---|---|
| 1/64" | 0.0156" |
| 1/32" | 0.0312" |
| 3/64" | 0.0469" |
| 1/16" | 0.0625" |
| 5/64" | 0.0781" |
| 3/32" | 0.0938" |
| 7/64" | 0.1094" |
| 1/8" | 0.1250" |
| 9/64" | 0.1406" |
| 5/32" | 0.1562" |
| 11/64" | 0.1719" |
| 3/16" | 0.1875" |
| 13/64" | 0.2031" |
| 7/32" | 0.2188" |
| 15/64" | 0.2344" |
| 1/4" | 0.2500" |
| 17/64" | 0.2656" |
| 9/32" | 0.2812" |
| 19/64" | 0.2969" |
| 5/16" | 0.3125" |
| 21/64" | 0.3281" |
| 11/32" | 0.3438" |
| 23/64" | 0.3594" |
| 3/8" | 0.3750" |
| 25/64" | 0.3906" |
| 13/32" | 0.4062" |
| 27/64" | 0.4219" |
| 7/16" | 0.4375" |
| 29/64" | 0.4531" |
| 15/32" | 0.4688" |
| 31/64" | 0.4844" |
| 1/2" | 0.5000" |
| SIZE | DECIMAL |
|---|---|
| 33/64" | 0.5156" |
| 17/32" | 0.5312" |
| 35/64" | 0.5469" |
| 9/16" | 0.5625" |
| 37/64" | 0.5781" |
| 19/32" | 0.5938" |
| 39/64" | 0.6094" |
| 5/8" | 0.6250" |
| 41/64" | 0.6406" |
| 21/32" | 0.6562" |
| 43/64" | 0.6719" |
| 11/16" | 0.6875" |
| 45/64" | 0.7031" |
| 23/32" | 0.7188" |
| 47/64" | 0.7344" |
| 3/4" | 0.7500" |
| 49/64" | 0.7656" |
| 25/32" | 0.7812" |
| 51/64" | 0.7969" |
| 13/16" | 0.8125" |
| 53/64" | 0.8281" |
| 27/32" | 0.8438" |
| 55/64" | 0.8594" |
| 7/8" | 0.8750" |
| 57/64" | 0.8906" |
| 29/32" | 0.9062" |
| 59/64" | 0.9219" |
| 15/16" | 0.9375" |
| 61/64" | 0.9531" |
| 31/32" | 0.9688" |
| 63/64" | 0.9844" |
| 1" | 1.0000" |