Drill Size and Inch to Millimeter Table
Inches
MM 
Drill
0.0059
.1499
97
0.0063
.1600
96
0.0067
.1702
95
0.0071
.1803
94
0.0075
.1905
93
0.0079
.2007
92
0.0083
.2108
91
0.0087
.2210
90
0.0091
.2311
89
0.0095
.2413
88
0.0100
.2540
87
0.0105
.2667
86
0.0111
.2794
85
0.0115
.2921
84
0.0120
.3048
83
0.0125
.3175
82
0.0130
.3302
81
0.0135
.3429
80
0.0145
.3683
79
0.0156
.3962
1/64"
0.0160
.4064
78
0.0180
.4572
77
0.0200
.5080
76
0.0210
.5334
75
0.0225
.5715
74
0.0240
.6096
73
0.0250
.6350
72
0.0260
.6604
71
0.0280
.7112
70
0.0292
.7417
69
0.0310
.7874
68
0.0312
.7925
1/32"
0.0320
.8128
67
0.0330
.8382
66
0.0350
.8890
65
0.0360
.9144
64
0.0370
.9398
63
0.0380
.9652
62
0.0390
.9906
61
Inches
  MM 
Drill
0.0400
1.0160
60
0.0410
1.0414
59
0.0420
1.0668
58
0.0430
1.0922
57
0.0465
1.1811
56
0.0469
1.1913
3/64"
0.0520
1.3208
55
0.0550
1.3970
54
0.0595
1.5113
53
0.0625
1.5875
1/16"
0.0635
1.6129
52
0.0670
1.7018
51
0.0700
1.7780
50
0.0730
1.8771
49
0.0760
1.9304
48
0.0781
1.9837
5/64"
0.0785
1.9939
47
0.0810
2.0574
46
0.0820
2.0828
45
0.0860
2.1844
44
0.0890
2.2606
43
0.0935
2.3749
42
0.0938
2.3825
3/32"
0.0960
2.4384
41
0.0980
2.4892
40
0.0995
2.5273
39
0.1015
2.5781
38
0.1040
2.6416
37
0.1065
2.7051
36
0.1094
2.7788
7/64"
0.1100
2.7940
35
0.1110
2.1894
34
0.1130
2.8702
33
0.1160
2.9464
32
0.1200
3.0480
31
0.1250
3.1750
1/8"
0.1285
3.2639
30
0.1360
3.4544
29
0.1405
3.5687
28
Inches
  MM 
Drill
0.1406
3.5712
9/64"
0.1440
3.6576
27
0.1470
3.7338
26
0.11495
3.7973
25
0.1520
3.8608
24
0.1540
3.9116
23
0.1562
3.9675
5/32"
0.1570
3.3978
22
0.1590
4.0386
21
0.1610
4.0894
20
0.1660
4.2164
19
0.1695
4.3053
18
0.1719
4.3663
11/64"
0.1730
4.3942
17
0.1770
4.4958
16
0.1800
4.5720
15
0.1820
4.6228
14
0.1850
4.6990
13
0.1875
4.7625
3/16"
0.1890
4.8006
12
0.1910
4.8514
11
0.1935
4.9149
10
0.1960
4.9784
9
0.1990
5.0546
8
0.2010
5.1054
7
0.2031
5.1587
13/64"
0.2040
5.1816
6
0.2055
5.2197
5
0.2090
5.3086
4
0.2130
5.4102
3
0.2188
5.5575
7/32"
0.2210
5.6134
2
0.2280
5.7912
1
0.2340
5.9436
A
0.2344
5.9538
15/64"
0.2380
6.0452
B
0.2420
6.1468
C
0.2460
6.2484
D
0.2500
6.3500
E
Inches
   MM 
Drill
0.2570
6.5278
F
0.2610
6.6294
G
0.2656
6.7462
17/64"
0.2660
6.7564
H
0.2720
6.9088
I
0.2770
7.0358
J
0.2810
7.1374
K
0.2812
7.1425
9/32
0.2900
7.3660
L
0.2950
7.4930
M
0.2969
7.5413
19/64"
0.3020
7.6708
N
0.3125
7.9375
5/16
0.3160
8.0264
O
0.3230
8.2042
P
0.3281
8.3337
21/64"
0.3320
8.4328
Q
0.3390
8.6106
R
0.3438
8.7325
11/32"
0.3480
8.8392
S
0.3580
9.0932
T
0.3594
9.1288
23/64"
0.3680
9.3472
U
0.3750
9.5250
3/8"
0.3770
9.5758
V
0.3860
9.8044
W
0.3906
9.9212
25/64"
0.3970
10.0838
X
0.4040
10.2616
Y
0.4062
10.3175
13/32"
0.4130
10.4902
Z
0.4219
10.7173
27/64"
0.4375
11.1125
7/16"
0.4531
11.5087
29/64"
0.4688
11.9075
15/32"
0.4844
12.3038
31/64"
0.5000
12.7000
1/2"
     
     
Stolen from M. Addison Milligan at http://www.milligansisland.com/Garage