Drill Bit Sizes Conversions | Number and Letter Drills | Fractional Drills | Decimal Equivalents | | 80 | ... | .0135 | | 79 | ... | .0145 | | | 1/64 | .0156 | | 78 | ... | .0160 | | 77 | ... | .0180 | | 76 | ... | .0200 | | 75 | ... | .0210 | | 74 | ... | .0225 | | 73 | ... | .0240 | | 72 | ... | .0250 | | 71 | ... | .0260 | | 70 | ... | .0280 | | 69 | ... | .0292 | | 68 | ... | .0310 | | | 1/32 | .0312 | | 67 | ... | .0320 | | 66 | ... | .0330 | | 65 | ... | .0350 | | 64 | ... | .0360 | | 63 | ... | .0370 | | 62 | ... | .0380 | | 61 | ... | .0390 | | 60 | ... | .0400 | | 59 | ... | .0410 | | 58 | ... | .0420 | | 57 | ... | .0430 | | 56 | ... | .0465 | | | 3/64 | .0469 | | 55 | ... | .0520 | | 54 | ... | .0550 | | 53 | ... | .0595 | | | 1/16 | .0625 | | 52 | ... | .0635 | | 51 | ... | .0670 | | 50 | ... | .0700 | | 49 | ... | .0730 | | 48 | ... | .0760 | | | 5/64 | .0781 | | 47 | ... | .0785 | | 46 | ... | .0810 | | 45 | ... | .0820 | | 44 | ... | .0860 | | 43 | ... | .0890 | | 42 | ... | .0935 | | | 3/32 | .0937 | | 41 | ... | .0960 | | 40 | ... | .0980 | | 39 | ... | .0995 | | 38 | ... | .1015 | | 37 | ... | .1040 | | 36 | ... | .1065 | | | 7/64 | .1094 | | 35 | ... | .1100 | | 34 | ... | .1110 | | 33 | ... | .1130 | | 32 | ... | .1160 | | 31 | ... | .1200 | | | 1/8 | .1250 | | 30 | ... | .1285 | | 29 | ... | .1360 | | 28 | ... | .1405 | | | 9/64 | .1406 | | 27 | ... | .1440 | | 26 | ... | .1470 | | 25 | ... | .1495 | | 24 | ... | .1520 | | 23 | ... | .1540 | | | 5/32 | .1562 | | 22 | ... | .1570 | | 21 | ... | .1590 | | 20 | ... | .1610 | | 19 | ... | .1660 | | 18 | ... | .1695 | | | 11/64 | .1719 | | 17 | ... | .1720 | | 16 | ... | .1770 | | 15 | ... | .1800 | | 14 | ... | .1820 | | 13 | ... | .1850 | | | 3/16 | .1875 | | 12 | ... | .1890 | | 11 | ... | .1910 | | 10 | ... | .1935 | | 9 | ... | .1960 | | 8 | ... | .1990 | | 7 | ... | .2010 | | | 13/64 | .2031 | | 6 | ... | .2040 | | 5 | ... | .2055 | | 4 | ... | .2090 | | 3 | ... | .2130 | | | 7/32 | .2187 | | 2 | ... | .2210 | | 1 | ... | .2280 | | A | ... | .2340 | | | 15/64 | .2344 | | B | ... | .2380 | | C | ... | .2420 | | D | ... | .2460 | | E | 1/4 | .2500 | | F | ... | .2570 | | G | ... | .2610 | | | 17/64 | .2656 | | H | ... | .2660 | | I | ... | .2720 | | J | ... | .2770 | | K | ... | .2810 | | | 9/32 | .2812 | | L | ... | .2900 | | M | ... | .2950 | | | 19/64 | .2969 | | N | ... | .3020 | | | 5/16 | .3125 | | O | ... | .3160 | | P | ... | .3230 | | | 21/64 | .3281 | | Q | ... | .3320 | | R | ... | .3390 | | | 11/32 | .3437 | | S | ... | .3480 | | T | ... | .3580 | | | 23/64 | .3594 | | U | ... | .3680 | | | 3/8 | .3750 | | V | ... | .3770 | | W | ... | .3860 | | | 25/64 | .3906 | | X | ... | .3970 | | Y | ... | .4040 | | | 13/32 | .4062 | | Z | ... | .4130 | | | 27/64 | .4219 | | | 7/16 | .4375 | | | 29/64 | .4531 | | | 15/32 | .4687 | | | 31/64 | .4844 | | | 1/2 | .5000 | | | 33/64 | .5156 | | | 17/32 | .5312 | | | 35/64 | .5469 | | | 9/16 | .5625 | | | 37/64 | .5781 | | | 19/32 | .5937 | | | 39/64 | .6094 | | | 5/8 | .6250 | | | 41/64 | .6406 | | | 21/32 | .6562 | | | 43/64 | .6719 | | | 11/16 | .6875 | | | 45/64 | .7031 | | | 23/32 | .7187 | | | 47/64 | .7344 | | | 3/4 | .7500 | | | 49/64 | .7656 | | | 25/32 | .7812 | | | 51/64 | .7969 | | | 13/16 | .8125 | | | 53/64 | .8281 | | | 27/32 | .8437 | | | 55/64 | .8594 | | | 7/8 | .8750 | | | 57/64 | .8906 | | | 29/32 | .9062 | | | 59/64 | .9219 | | | 15/16 | .9375 | | | 61/64 | .9531 | | | 31/32 | .9687 | | | 63/64 | .9844 | | | 1 | 1.0000 | |
