Metric Drill Sizes
This Table lists all of the standard Metric Drill Sizes with their Decimal Equivalents from 0.35 mm to 25mm.
Here are the American Standard Drill Sizes
Drill (mm) |
Decimal (inches) |
Drill (mm) |
Decimal (inches) |
Drill (mm) |
Decimal (inches) |
| .35 | .0138 | 3.4 | .1339 | 8.0 | .3150 |
| .4 | .0157 | 3.5 | .1378 | 8.1 | .3189 |
| .45 | .0177 | 3.6 | .1417 | 8.2 | .3228 |
| .5 | .0197 | 3.7 | .1457 | 8.25 | .3248 |
| .55 | .0217 | 3.75 | .1477 | 8.3 | .3267 |
| .6 | .0245 | 3.8 | .1496 | 8.4 | .3307 |
| .65 | .0256 | 3.9 | .1535 | 8.5 | .3346 |
| .7 | .0276 | 4.0 | .1575 | 8.6 | .3386 |
| .75 | .0295 | 4.1 | .1614 | 8.7 | .3425 |
| .8 | .0315 | 4.2 | .1654 | 8.75 | .3445 |
| .85 | .0335 | 4.25 | .1674 | 8.8 | .3465 |
| .9 | .0355 | 4.3 | .1693 | 8.9 | .3504 |
| .95 | .0374 | 4.4 | .1732 | 9.0 | .3543 |
| 1.0 | .0394 | 4.5 | .1771 | 9.1 | .3583 |
| 1.05 | .0413 | 4.6 | .1811 | 9.2 | .4522 |
| 1.1 | .0433 | 4.7 | .1850 | 9.25 | .4542 |
| 1.15 | .0453 | 4.75 | .1870 | 9.35 | .4561 |
| 1.2 | .0472 | 4.8 | .1890 | 9.4 | .3701 |
| 1.25 | .0492 | 4.9 | .1929 | 9.5 | .3740 |
| 1.3 | .0512 | 5.0 | .1968 | 9.6 | .3780 |
| 1.35 | .0531 | 5.1 | .2008 | 9.7 | .3819 |
| 1.4 | .0551 | 5.2 | .2047 | 9.75 | .3839 |
| 1.45 | .0571 | 5.25 | .2067 | 9.8 | .3858 |
| 1.5 | .0591 | 5.3 | .2087 | 9.9 | .3898 |
| 1.55 | .0610 | 5.4 | .2126 | 10.0 | .3937 |
| 1.6 | .0629 | 5.5 | .2165 | 10.5 | .4133 |
| 1.65 | .0650 | 5.6 | .2205 | 11.0 | .4331 |
| 1.7 | .0669 | 5.7 | .2244 | 11.5 | .4528 |
| 1.75 | .0689 | 5.75 | .2264 | 12.0 | .4724 |
| 1.8 | .0709 | 5.8 | .2283 | 12.5 | .4921 |
| 1.85 | .0728 | 5.9 | .2323 | 13.0 | .5118 |
| 1.9 | .0748 | 6.0 | .2452 | 13.5 | .5315 |
| 1.95 | .0768 | 6.1 | .2401 | 14.0 | .5512 |
| 2.0 | .0787 | 6.2 | .2441 | 14.5 | .5708 |
| 2.05 | .0807 | 6.25 | .2461 | 15.0 | .5906 |
| 2.1 | .0827 | 6.3 | .2480 | 15.5 | .6102 |
| 2.15 | .0846 | 6.4 | .2520 | 16.0 | .6300 |
| 2.2 | .0866 | 6.5 | .2559 | 16.5 | .6496 |
| 2.25 | .0886 | 6.6 | .2598 | 17.0 | .6693 |
| 2.3 | .0905 | 6.7 | .2638 | 17.5 | .6889 |
| 2.35 | .0925 | 6.75 | .2658 | 18.0 | .7087 |
| 2.4 | .0945 | 6.8 | .2677 | 18.5 | .7283 |
| 2.45 | .0965 | 6.9 | .2716 | 19.0 | .7480 |
| 2.5 | .0984 | 7.0 | .2756 | 19.5 | .7677 |
| 2.55 | .1004 | 7.1 | .2795 | 20.0 | .7874 |
| 2.6 | .1024 | 7.2 | .2835 | 20.5 | .8071 |
| 2.65 | .1043 | 7.25 | .2855 | 21.0 | .8268 |
| 2.7 | .1063 | 7.3 | .2874 | 21.5 | .8465 |
| 2.75 | .1083 | 7.4 | .2913 | 22.0 | .8661 |
| 2.8 | .1102 | 7.5 | .2953 | 22.5 | .8858 |
| 2.9 | .1142 | 7.6 | .2990 | 23.0 | .9055 |
| 3.0 | .1181 | 7.7 | .3031 | 23.5 | .9252 |
| 3.1 | .1220 | 7.75 | .3051 | 24.0 | .9449 |
| 3.2 | .1260 | 7.8 | .3071 | 24.5 | .9646 |
| 3.25 | .1280 | 7.9 | .3110 | 25.0 | .9843 |
| 3.3 | .1299 |
