Size Chart

Drill Size Chart



Below listed are all the standard drill sizes. Listed are from smallest to biggest in wire size , letter , fraction and metric. This chart is great to post on the wall for quick reference.

SizeDecimal Equivalent SizeDecimal Equivalent SizeDecimal Equivalent SizeDecimal Equivalent
970.0059 2.60 mm0.1024 M0.295 63/64"0.9844
960.0063 370.104 7.50 mm0.2953 1"1
950.0067 2.70 mm0.1063 19/64"0.2969 25.50 mm1.0039
940.0071 360.1065 7.60 mm0.2992 1-1/64"1.0156
930.0075 2.75 mm0.1083 N0.302 26.00 mm1.0236
920.0079 7/64"0.1094 7.70 mm0.3031 1-1/32"1.0312
910.0083 350.11 7.75 mm0.3051 26.50 mm1.0433
900.0087 2.80 mm0.1102 7.80 mm0.3071 1-3/64"1.0469
890.0091 340.111 7.90 mm0.311 1-1/16"1.0625
880.0095 330.113 5/16"0.3125 27.00 mm1.063
.25 mm0.0098 2.90 mm0.1142 8.00 mm0.315 1-5/64"1.0781
870.01 320.116 O0.316 27.50 mm1.0827
860.0105 3.00 mm0.1181 8.10 mm0.3189 1-3/32"1.0938
850.011 310.12 8.20 mm0.3228 28.00 mm1.1024
840.0115 3.10 mm0.122 P0.323 1-7/64"1.1094
.30 mm0.0118 1/8"0.125 8.25 mm0.3248 28.50 mm1.122
830.012 3.20 mm0.126 8.30 mm0.3268 1-1/8"1.125
820.0125 3.25 mm0.128 21/64"0.3281 1-9/64"1.1406
.32 mm0.0126 300.1285 8.40 mm0.3307 29.00 mm1.1417
810.013 3.30 mm0.1299 Q0.332 1-5/32"1.1562
800.0135 3.40 mm0.1339 8.50 mm0.3346 29.50 mm1.1614
.35 mm0.0138 290.136 8.60 mm0.3386 1-11/64"1.1719
.36 mm0.0142 3.50 mm0.1378 R0.339 30.00 mm1.1811
790.0145 280.1405 8.70 mm0.3425 1-3/16"1.1875
.38 mm0.015 9/64"0.1406 11/32"0.3438 30.50 mm1.2008
1/64"0.0156 3.60 mm0.1417 8.75 mm0.3445 1-13/64"1.2031
.40 mm0.0157 270.144 8.80 mm0.3465 1-7/32"1.2188
780.016 3.70 mm0.1457 S0.348 31.00 mm1.2205
.42 mm0.0165 260.147 8.90 mm0.3504 1-15/64"1.2344
.44 mm0.0173 3.75 mm0.1476 9.00 mm0.3543 31.50 mm1.2402
.45 mm0.0177 250.1495 T0.358 1-1/4"1.25
770.018 3.80 mm0.1496 9.10 mm0.3583 32.00 mm1.2598
.46 mm0.0181 240.152 23/64"0.3594 1-17/64"1.2656
.48 mm0.0189 3.90 mm0.1535 9.20 mm0.3622 32.50 mm1.2795
.50 mm0.0197 230.154 9.25 mm0.3642 1-9/32"1.2812
760.02 5/32"0.1562 9.30 mm0.3661 1-19/64"1.2969
750.021 220.157 U0.368 33.00 mm1.2992
.55 mm0.0217 4.00 mm0.1575 9.40 mm0.3701 1-5/16"1.3125
740.0225 210.159 9.50 mm0.374 33.50 mm1.3189
.60 mm0.0236 200.161 3/8"0.375 1-21/64"1.3281
730.024 4.10 mm0.1614 V0.377 34.00 mm1.3386
720.025 4.20 mm0.1654 9.60 mm0.378 1-11/32"1.3438
.65 mm0.0256 190.166 9.70 mm0.3819 34.50 mm1.3583
710.026 4.25 mm0.1673 9.75 mm0.3839 1-23/64"1.3594
.70 mm0.0276 4.30 mm0.1693 9.80 mm0.3858 1-3/8"1.375
700.028 180.1695 W0.386 35.00 mm1.378
690.0292 11/64"0.1719 9.90 mm0.3898 1-25/64"1.3906
.75 mm0.0295 170.173 25/64"0.3906 35.50 mm1.3976
680.031 4.40 mm0.1732 10.00 mm0.3937 1-13/32"1.4062
1/32"0.0312 160.177 X0.397 36.00 mm1.4173
.80 mm0.0315 4.50 mm0.1772 Y0.404 1-27/64"1.4219
670.032 150.18 13/32"0.4062 36.50 mm1.437
660.033 4.60 mm0.1811 Z0.413 1-7/16"1.4375
.85 mm0.0335 140.182 10.50 mm0.4134 1-29/64"1.4531
650.035 130.185 27/64"0.4219 37.00 mm1.4567
.90 mm0.0354 4.70 mm0.185 11.00 mm0.4331 1-15/32"1.4688
640.036 4.75 mm0.187 7/16"0.4375 37.50 mm1.4764
630.037 3/16"0.1875 11.50 mm0.4528 1-31/64"1.4844
.95 mm0.0374 4.80 mm0.189 29/64"0.4531 38.00 mm1.4961
620.038 120.189 15/32"0.4688 1-1/2"1.5
610.039 110.191 12.00 mm0.4724 1-33/64"1.5156
1.00 mm0.0394 4.90 mm0.1929 31/64"0.4844 38.50 mm1.5157
600.04 100.1935 12.50 mm0.4921 1-17/32"1.5312
590.041 90.196 1/2"0.5 39.00 mm1.5354
1.05 mm0.0413 5.00 mm0.1969 13.00 mm0.5118 1-35/64"1.5469
580.042 80.199 33/64"0.5156 39.50 mm1.5551
570.043 5.10 mm0.2008 17/32"0.5312 1-9/16"1.5625
1.10 mm0.0433 70.201 13.50 mm0.5315 40.00 mm1.5748
1.15 mm0.0453 13/64"0.2031 35/64"0.5469 1-37/64"1.5781
560.0465 60.204 14.00 mm0.5512 1-19/32"1.5938
3/64"0.0469 5.20 mm0.2047 9/16"0.5625 40.50 mm1.5945
1.20 mm0.0472 50.2055 14.50 mm0.5709 1-39/64"1.6094
1.25 mm0.0492 5.25 mm0.2067 37/64"0.5781 41.00 mm1.6142
1.30 mm0.0512 5.30 mm0.2087 15.00 mm0.5906 1-5/8"1.625
550.052 40.209 19/32"0.5938 41.50 mm1.6339
1.35 mm0.0531 5.40 mm0.2126 39/64"0.6094 1-41/64"1.6406
540.055 30.213 15.50 mm0.6102 42.00 mm1.6535
1.40 mm0.0551 5.50 mm0.2165 5/8"0.625 1-21/32"1.6562
1.45 mm0.0571 7/32"0.2188 16.00 mm0.6299 1-43/64"1.6719
1.50 mm0.0591 5.60 mm0.2205 41/64"0.6406 42.50 mm1.6732
530.0595 20.221 16.50 mm0.6496 1-11/16"1.6875
1.55 mm0.061 5.70 mm0.2244 21/32"0.6562 43.00 mm1.6929
1/16"0.0625 5.75 mm0.2264 17.00 mm0.6693 1-45/64"1.7031
1.60 mm0.063 10.228 43/64"0.6719 43.50 mm1.7126
520.0635 5.80 mm0.2283 11/16"0.6875 1-23/32"1.7188
1.65 mm0.065 5.90 mm0.2323 17.50 mm0.689 44.00 mm1.7323
1.70 mm0.0669 A0.234 45/64"0.7031 1-47/64"1.7344
510.067 15/64"0.2344 18.00 mm0.7087 1-3/4"1.75
1.75 mm0.0689 6.00 mm0.2362 23/32"0.7188 44.50 mm1.752
500.07 B0.238 18.50 mm0.7283 1-49/64"1.7656
1.80 mm0.0709 6.10 mm0.2402 47/64"0.7344 45.00 mm1.7717
1.85 mm0.0728 C0.242 19.00 mm0.748 1-25/32"1.7812
490.073 6.20 mm0.2441 3/4"0.75 45.50 mm1.7913
1.90 mm0.0748 D0.246 49/64"0.7656 1-51/64"1.7969
480.076 6.25 mm0.2461 19.50 mm0.7677 46.00 mm1.811
1.95 mm0.0768 6.30 mm0.248 25/32"0.7812 1-13/16"1.8125
5/64"0.0781 1/4" E0.25 20.00 mm0.7874 1-53/64"1.8281
470.0785 6.40 mm0.252 51/64"0.7969 46.50 mm1.8307
2.00 mm0.0787 6.50 mm0.2559 20.50 mm0.8071 1-27/32"1.8438
2.05 mm0.0807 F0.257 13/16"0.8125 47.00 mm1.8504
460.081 6.60 mm0.2598 21.00 mm0.8268 1-55/64"1.8594
450.082 G0.261 53/64"0.8281 47.50 mm1.8701
2.10 mm0.0827 6.70 mm0.2638 27/32"0.8438 1-7/8"1.875
2.15 mm0.0846 17/64"0.2656 21.50 mm0.8465 48.00 mm1.8898
440.086 6.75 mm0.2657 55/64"0.8594 1-57/64"1.8906
2.20 mm0.0866 H0.266 22.00 mm0.8661 1-29/32"1.9062
2.25 mm0.0886 6.80 mm0.2677 7/8"0.875 48.50 mm1.9094
430.089 6.90 mm0.2717 22.50 mm0.8858 1-59/64"1.9219
2.30 mm0.0906 I0.272 57/64"0.8906 49.00 mm1.9291
2.35 mm0.0925 7.00 mm0.2756 23.00 mm0.9055 1-15/16"1.9375
420.0935 J0.277 29/32"0.9062 49.50 mm1.9488
3/32"0.0938 7.10 mm0.2795 59/64"0.9219 1-61/64"1.9531
2.40 mm0.0945 K0.281 23.50 mm0.9252 50.00 mm1.9685
410.096 9/32"0.2812 15/16"0.9375 1-31/32"1.9688
2.45 mm0.0965 7.20 mm0.2835 24.00 mm0.9449 1-63/64"1.9844
400.098 7.25 mm0.2854 61/64"0.9531 50.50 mm1.9882
2.50 mm0.0984 7.30 mm0.2874 24.50 mm0.9646 2"2
390.0995 L0.29 31/32"0.9688   
380.1015 7.40 mm0.2913 25.00 mm0.9843