Printable drill bit size chart

The same numbers as the full chart, laid out to print on one sheet. The full chart has the sources, the tiers behind each number and the reasons.

Back to the full chart

One page on Letter or A4. To save a PDF, pick “Save as PDF” in the print dialog.

For a sheet that matches the screen, choose portrait, Letter or A4, and 100% (actual size) scale in the print dialog. Saved as a PDF, it opens on a phone or tablet in the shop with no signal. The numbers change only when the full chart’s sources do, so check the full chart now and then against the copy on your wall.

Drill sizes, smallest first: #80 to #43
Drill	Inch	mm
#80	0.0135	0.34
#79	0.0145	0.37
1/64	0.0156	0.40
#78	0.0160	0.41
#77	0.0180	0.46
#76	0.0200	0.51
#75	0.0210	0.53
#74	0.0225	0.57
#73	0.0240	0.61
#72	0.0250	0.64
#71	0.0260	0.66
#70	0.0280	0.71
#69	0.0292	0.74
#68	0.0310	0.79
1/32	0.0313	0.79
#67	0.0320	0.81
#66	0.0330	0.84
#65	0.0350	0.89
#64	0.0360	0.91
#63	0.0370	0.94
#62	0.0380	0.97
#61	0.0390	0.99
#60	0.0400	1.02
#59	0.0410	1.04
#58	0.0420	1.07
#57	0.0430	1.09
#56	0.0465	1.18
3/64	0.0469	1.19
#55	0.0520	1.32
#54	0.0550	1.40
#53	0.0595	1.51
1/16	0.0625	1.59
#52	0.0635	1.61
#51	0.0670	1.70
#50	0.0700	1.78
#49	0.0730	1.85
#48	0.0760	1.93
5/64	0.0781	1.98
#47	0.0785	1.99
#46	0.0810	2.06
#45	0.0820	2.08
#44	0.0860	2.18
#43	0.0890	2.26

Drill sizes, smallest first: #42 to #8
Drill	Inch	mm
#42	0.0935	2.37
3/32	0.0938	2.38
#41	0.0960	2.44
#40	0.0980	2.49
#39	0.0995	2.53
#38	0.1015	2.58
#37	0.1040	2.64
#36	0.1065	2.71
7/64	0.1094	2.78
#35	0.1100	2.79
#34	0.1110	2.82
#33	0.1130	2.87
#32	0.1160	2.95
#31	0.1200	3.05
1/8	0.1250	3.17
#30	0.1285	3.26
#29	0.1360	3.45
#28	0.1405	3.57
9/64	0.1406	3.57
#27	0.1440	3.66
#26	0.1470	3.73
#25	0.1495	3.80
#24	0.1520	3.86
#23	0.1540	3.91
5/32	0.1563	3.97
#22	0.1570	3.99
#21	0.1590	4.04
#20	0.1610	4.09
#19	0.1660	4.22
#18	0.1695	4.31
11/64	0.1719	4.37
#17	0.1730	4.39
#16	0.1770	4.50
#15	0.1800	4.57
#14	0.1820	4.62
#13	0.1850	4.70
3/16	0.1875	4.76
#12	0.1890	4.80
#11	0.1910	4.85
#10	0.1935	4.91
#9	0.1960	4.98
#8	0.1990	5.05

Drill sizes, smallest first: #7 to 25/64
Drill	Inch	mm
#7	0.2010	5.11
13/64	0.2031	5.16
#6	0.2040	5.18
#5	0.2055	5.22
#4	0.2090	5.31
#3	0.2130	5.41
7/32	0.2188	5.56
#2	0.2210	5.61
#1	0.2280	5.79
A	0.2340	5.94
15/64	0.2344	5.95
B	0.2380	6.05
C	0.2420	6.15
D	0.2460	6.25
E · 1/4	0.2500	6.35
F	0.2570	6.53
G	0.2610	6.63
17/64	0.2656	6.75
H	0.2660	6.76
I	0.2720	6.91
J	0.2770	7.04
K	0.2810	7.14
9/32	0.2813	7.14
L	0.2900	7.37
M	0.2950	7.49
19/64	0.2969	7.54
N	0.3020	7.67
5/16	0.3125	7.94
O	0.3160	8.03
P	0.3230	8.20
21/64	0.3281	8.33
Q	0.3320	8.43
R	0.3390	8.61
11/32	0.3438	8.73
S	0.3480	8.84
T	0.3580	9.09
23/64	0.3594	9.13
U	0.3680	9.35
3/8	0.3750	9.53
V	0.3770	9.58
W	0.3860	9.80
25/64	0.3906	9.92

Drill sizes, smallest first: X to 1
Drill	Inch	mm
X	0.3970	10.08
Y	0.4040	10.26
13/32	0.4063	10.32
Z	0.4130	10.49
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	13.49
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	0.7031	17.86
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	19.84
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	22.23
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 and letter decimals: ASME B94.11M, checked against three published copies. Fractions are exact. Metric drills are on the full chart. woodworkingmath.com/fasteners/drill-bit-size-chart/ Version 8 Nov 2026. Free to share under CC BY 4.0: credit Woodworking Math (woodworkingmath.com).