Metric Drill Sizes
This Table lists Metric Drill Sizes with their Decimal Equivalents
Click here for American Standard 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 |
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