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Drill Size / Fraction / Millimeter / Decimal Cross Reference | Industrial Hardware & Specialties, Inc.
Drill Size Cross Reference
DRILL SIZE M/M DECIMAL EQUIV.
  0.10 0.0039
  0.20 0.0079
  0.25 0.0098
  0.30 0.0118
80 0.34 0.0135
79 0.37 0.0145
1/64 0.40 0.0156
  0.40 0.0157
78 0.41 0.0160
77 0.46 0.0180
  0.50 0.0197
76 0.51 0.0200
75 0.53 0.0210
74 0.57 0.0225
  0.60 0.0236
73 0.61 0.0240
72 0.64 0.0250
71 0.66 0.0260
  0.70 0.0276
70 0.71 0.0280
DRILL SIZE M/M DECIMAL EQUIV.
69 0.74 0.0292
  0.75 0.0295
68 0.77 0.0310
1/32 0.79 0.0312
  0.80 0.0315
67 0.81 0.0320
66 0.84 0.0330
65 0.89 0.0350
  0.90 0.0354
64 0.91 0.0360
63 0.94 0.0370
62 0.97 0.0380
62 0.99 0.0390
  1.00 0.0394
60 1.02 0.0400
59 1.04 0.0410
58 1.07 0.0420
57 1.09 0.0430
56 1.18 0.0465
DRILL SIZE M/M DECIMAL EQUIV.
3/64 1.19 0.0469
55 1.32 0.0520
54 1.40 0.0550
53 1.51 0.0595
1/16 1.59 0.0625
52 1.61 0.0635
51 1.70 0.0670
50 1.78 0.0700
49 1.85 0.0730
48 1.93 0.0760
5/64 1.98 0.0781
47 1.99 0.0785
  2.00 0.0787
46 2.06 0.0810
45 2.08 0.0820
44 2.18 0.0860
43 2.26 0.0890
42 2.37 0.0935
3/32 2.38 0.0938
DRILL SIZE M/M DECIMAL EQUIV.
41 2.44 0.0960
40 2.50 0.0980
39 2.53 0.0995
38 2.58 0.1015
37 2.64 0.1040
36 2.71 0.1065
7/64 2.78 0.1094
35 2.79 0.1100
34 2.82 0.1110
33 2.87 0.1130
32 2.95 0.1160
  3.00 0.1181
31 3.05 0.1200
1/8 3.18 0.1250
30 3.26 0.1285
29 3.45 0.1360
28 3.57 0.1405
9/64 3.57 0.1406
27 3.66 0.1440
DRILL SIZE M/M DECIMAL EQUIV.
26 3.73 0.1470
25 3.80 0.1495
24 3.86 0.1520
23 3.91 0.1540
5/32 3.97 0.1562
22 3.99 0.1570
  4.00 0.1575
21 4.04 0.1590
20 4.09 0.1610
19 4.22 0.1660
18 4.31 0.1695
11/64 4.37 0.1719
17 4.39 0.1730
16 4.50 0.1770
15 4.57 0.1800
14 4.62 0.1820
13 4.70 0.1850
3/16 4.76 0.1875
12 4.80 0.1890
DRILL SIZE M/M DECIMAL EQUIV.
11 4.85 0.1910
10 4.00 0.1935
9 4.91 0.1960
  4.98 0.1969
8 5.00 0.1990
7 5.11 0.2010
13/64 5.16 0.2031
6 5.18 0.2040
5 5.22 0.2055
4 5.31 0.2090
3 5.41 0.2130
7/32 5.56 0.2138
2 5.61 0.2188
1 5.79 0.2210
A 5.94 0.2280
15/64 5.95 0.2340
  6.00 0.2344
B 6.05 0.2362
C 6.15 0.2420
DRILL SIZE M/M DECIMAL EQUIV.
D 6.25 0.2460
1/4 6.35 0.2500
E 6.35 0.2500
F 6.53 0.2570
G 6.63 0.2610
17/64 6.75 0.2656
H 6.76 0.2660
I 6.91 0.2720
  7.00 0.2756
J 7.04 0.2770
K 7.14 0.2810
9/32 7.14 0.2812
L 7.37 0.2900
M 7.49 0.2950
19/64 7.54 0.2969
N 7.67 0.3020
5/16 7.94 0.3125
  8.00 0.3150
O 8.03 0.3160
DRILL SIZE M/M DECIMAL EQUIV.
P 8.20 0.3230
21/64 8.33 0.3281
Q 8.43 0.3320
R 8.61 0.3390
11/32 8.73 0.3438
S 8.84 0.3480
  9.00 0.3543
T 9.09 0.3580
23/64 9.13 0.3594
U 9.35 0.3680
3/8 9.53 0.3750
V 9.56 0.3770
W 9.80 0.3860
25/64 9.92 0.3906
  10.00 0.3937
X 10.08 0.3970
Y 10.26 0.4040
13/32 10.32 0.4062
Z 10.49 0.4130
DRILL SIZE M/M DECIMAL EQUIV.
27/64 10.72 0.4219
  11.00 0.4331
7/16 11.11 0.4375
29/64 11.51 0.4531
15/32 11.91 0.4688
  12.00 0.4724
31/64 12.30 0.4844
1/2 12.70 0.5000
  13.00 0.5118
33/64 13.10 0.5156
17/32 13.49 0.5312
35/64 13.89 0.5469
  14.00 0.5512
9/16 14.29 0.5625
37/64 14.68 0.5781
  15.00 0.5906
19/32 15.08 0.5938
39/64 15.48 0.6094
5/8 15.88 0.6250
DRILL SIZE M/M DECIMAL EQUIV.
  16.00 0.6299
41/64 16.27 0.6406
21/32 16.67 0.6562
  17.00 0.6693
43/64 17.07 0.6719
11/16 17.46 0.6875
45/64 17.86 0.7031
  18.00 0.7087
23/32 18.26 0.7188
47/64 18.65 0.7344
  19.00 0.7480
3/4 19.05 0.7500
49/64 19.45 0.7656
25/32 19.84 0.7812
  20.00 0.7874
51/64 20.24 0.7969
13/16 20.64 0.8125
  21.00 0.8268
53/64 21.03 0.8281
DRILL SIZE M/M DECIMAL EQUIV.
27/32 21.43 0.8438
55/64 21.84 0.8594
  22.00 0.8661
7/8 22.23 0.8750
57/64 22.62 0.8906
  23.00 0.9055
29/32 23.02 0.9062
59/64 23.42 0.9219
15/16 23.81 0.9375
  24.00 0.9449
61/64 24.21 0.9531
31/32 24.61 0.9688
  25.00 0.9843
63/64 25.00 0.9844
1 25.40 1.0000