Drill bit size chart (printable)

Fractional

Size	in	mm
1/64	0.0156	0.40
1/32	0.0313	0.80
3/64	0.0469	1.19
1/16	0.0625	1.59
5/64	0.0781	1.98
3/32	0.0938	2.38
7/64	0.1094	2.78
1/8	0.1250	3.17
9/64	0.1406	3.57
5/32	0.1563	3.97
11/64	0.1719	4.37
3/16	0.1875	4.76
13/64	0.2031	5.16
7/32	0.2188	5.56
15/64	0.2344	5.95
1/4	0.2500	6.35
17/64	0.2656	6.75
9/32	0.2813	7.15
19/64	0.2969	7.54
5/16	0.3125	7.94
21/64	0.3281	8.33
11/32	0.3438	8.73
23/64	0.3594	9.13
3/8	0.3750	9.52
25/64	0.3906	9.92
13/32	0.4063	10.32
27/64	0.4219	10.72
7/16	0.4375	11.11
29/64	0.4531	11.51
15/32	0.4688	11.91
31/64	0.4844	12.30
1/2	0.5000	12.70
33/64	0.5156	13.10
17/32	0.5313	13.50
35/64	0.5469	13.89
9/16	0.5625	14.29
37/64	0.5781	14.68
19/32	0.5938	15.08
39/64	0.6094	15.48
5/8	0.6250	15.88
41/64	0.6406	16.27
21/32	0.6563	16.67
43/64	0.6719	17.07
11/16	0.6875	17.46
45/64	0.7013	17.81
23/32	0.7188	18.26
47/64	0.7344	18.65
3/4	0.7500	19.05
49/64	0.7656	19.45
25/32	0.7813	19.85
51/64	0.7969	20.24
13/16	0.8125	20.64
53/64	0.8281	21.03
27/32	0.8438	21.43
55/64	0.8594	21.83
7/8	0.8750	22.22
57/64	0.8906	22.62
29/32	0.9063	23.02
59/64	0.9219	23.42
15/16	0.9375	23.81
61/64	0.9531	24.21
31/32	0.9688	24.61
63/64	0.9844	25.00
1	1.0000	25.40

Number (wire gauge)

Size	in	mm
#1	0.2280	5.79
#2	0.2210	5.61
#3	0.2130	5.41
#4	0.2090	5.31
#5	0.2055	5.22
#6	0.2040	5.18
#7	0.2010	5.11
#8	0.1990	5.05
#9	0.1960	4.98
#10	0.1935	4.91
#11	0.1910	4.85
#12	0.1890	4.80
#13	0.1850	4.70
#14	0.1820	4.62
#15	0.1800	4.57
#16	0.1770	4.50
#17	0.1730	4.39
#18	0.1695	4.31
#19	0.1660	4.22
#20	0.1610	4.09
#21	0.1590	4.04
#22	0.1570	3.99
#23	0.1540	3.91
#24	0.1520	3.86
#25	0.1495	3.80
#26	0.1470	3.73
#27	0.1440	3.66
#28	0.1405	3.57
#29	0.1360	3.45
#30	0.1285	3.26
#31	0.1200	3.05
#32	0.1160	2.95
#33	0.1130	2.87
#34	0.1110	2.82
#35	0.1100	2.79
#36	0.1065	2.71
#37	0.1040	2.64
#38	0.1015	2.58
#39	0.0995	2.53
#40	0.0980	2.49
#41	0.0960	2.44
#42	0.0935	2.37
#43	0.0890	2.26
#44	0.0860	2.18
#45	0.0820	2.08
#46	0.0810	2.06
#47	0.0785	1.99
#48	0.0760	1.93
#49	0.0730	1.85
#50	0.0700	1.78
#51	0.0670	1.70
#52	0.0635	1.61
#53	0.0595	1.51
#54	0.0550	1.40
#55	0.0520	1.32
#56	0.0465	1.18
#57	0.0430	1.09
#58	0.0420	1.07
#59	0.0410	1.04
#60	0.0400	1.02
#61	0.0390	0.99
#62	0.0380	0.97
#63	0.0370	0.94
#64	0.0360	0.91
#65	0.0350	0.89
#66	0.0330	0.84
#67	0.0320	0.81
#68	0.0310	0.79
#69	0.0292	0.74
#70	0.0280	0.71
#71	0.0260	0.66
#72	0.0250	0.64
#73	0.0240	0.61
#74	0.0225	0.57
#75	0.0210	0.53
#76	0.0200	0.51
#77	0.0180	0.46
#78	0.0160	0.41
#79	0.0145	0.37
#80	0.0135	0.34

Letter

Size	in	mm
A	0.2340	5.94
B	0.2380	6.05
C	0.2420	6.15
D	0.2460	6.25
E	0.2500	6.35
F	0.2570	6.53
G	0.2610	6.63
H	0.2660	6.76
I	0.2720	6.91
J	0.2770	7.04
K	0.2810	7.14
L	0.2900	7.37
M	0.2950	7.49
N	0.3020	7.67
O	0.3160	8.03
P	0.3230	8.20
Q	0.3320	8.43
R	0.3390	8.61
S	0.3480	8.84
T	0.3580	9.09
U	0.3680	9.35
V	0.3770	9.58
W	0.3860	9.80
X	0.3970	10.08
Y	0.4040	10.26
Z	0.4130	10.49

Metric (0.5 to 13 mm)

Size	in	mm
0.5 mm	0.0197	0.50
0.6 mm	0.0236	0.60
0.7 mm	0.0276	0.70
0.8 mm	0.0315	0.80
0.9 mm	0.0354	0.90
1 mm	0.0394	1.00
1.1 mm	0.0433	1.10
1.2 mm	0.0472	1.20
1.3 mm	0.0512	1.30
1.4 mm	0.0551	1.40
1.5 mm	0.0591	1.50
1.6 mm	0.0630	1.60
1.7 mm	0.0669	1.70
1.8 mm	0.0709	1.80
1.9 mm	0.0748	1.90
2 mm	0.0787	2.00
2.1 mm	0.0827	2.10
2.2 mm	0.0866	2.20
2.3 mm	0.0906	2.30
2.4 mm	0.0945	2.40
2.5 mm	0.0984	2.50
2.6 mm	0.1024	2.60
2.7 mm	0.1063	2.70
2.8 mm	0.1102	2.80
2.9 mm	0.1142	2.90
3 mm	0.1181	3.00
3.1 mm	0.1220	3.10
3.2 mm	0.1260	3.20
3.3 mm	0.1299	3.30
3.4 mm	0.1339	3.40
3.5 mm	0.1378	3.50
3.6 mm	0.1417	3.60
3.7 mm	0.1457	3.70
3.8 mm	0.1496	3.80
3.9 mm	0.1535	3.90
4 mm	0.1575	4.00
4.1 mm	0.1614	4.10
4.2 mm	0.1654	4.20
4.3 mm	0.1693	4.30
4.4 mm	0.1732	4.40
4.5 mm	0.1772	4.50
4.6 mm	0.1811	4.60
4.7 mm	0.1850	4.70
4.8 mm	0.1890	4.80
4.9 mm	0.1929	4.90
5 mm	0.1969	5.00
5.1 mm	0.2008	5.10
5.2 mm	0.2047	5.20
5.3 mm	0.2087	5.30
5.4 mm	0.2126	5.40
5.5 mm	0.2165	5.50
5.6 mm	0.2205	5.60
5.7 mm	0.2244	5.70
5.8 mm	0.2283	5.80
5.9 mm	0.2323	5.90
6 mm	0.2362	6.00
6.1 mm	0.2402	6.10
6.2 mm	0.2441	6.20
6.3 mm	0.2480	6.30
6.4 mm	0.2520	6.40
6.5 mm	0.2559	6.50
6.6 mm	0.2598	6.60
6.7 mm	0.2638	6.70
6.8 mm	0.2677	6.80
6.9 mm	0.2717	6.90
7 mm	0.2756	7.00
7.1 mm	0.2795	7.10
7.2 mm	0.2835	7.20
7.3 mm	0.2874	7.30
7.4 mm	0.2913	7.40
7.5 mm	0.2953	7.50
7.6 mm	0.2992	7.60
7.7 mm	0.3031	7.70
7.8 mm	0.3071	7.80
7.9 mm	0.3110	7.90
8 mm	0.3150	8.00
8.1 mm	0.3189	8.10
8.2 mm	0.3228	8.20
8.3 mm	0.3268	8.30
8.4 mm	0.3307	8.40
8.5 mm	0.3346	8.50
8.6 mm	0.3386	8.60
8.7 mm	0.3425	8.70
8.8 mm	0.3465	8.80
8.9 mm	0.3504	8.90
9 mm	0.3543	9.00
9.1 mm	0.3583	9.10
9.2 mm	0.3622	9.20
9.3 mm	0.3661	9.30
9.4 mm	0.3701	9.40
9.5 mm	0.3740	9.50
9.6 mm	0.3780	9.60
9.7 mm	0.3819	9.70
9.8 mm	0.3858	9.80
9.9 mm	0.3898	9.90
10 mm	0.3937	10.00
10.5 mm	0.4134	10.50
11 mm	0.4331	11.00
11.5 mm	0.4528	11.50
12 mm	0.4724	12.00
12.5 mm	0.4921	12.50
13 mm	0.5118	13.00

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