Drill Conversion Chart
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1Drill Sizes
{Conversion} = {Chart}
Drill
Inches
Drill
Inches
Drill
Inches
Drill
Inches
80
=
.013
53
=
.059
26
=
.147
A
=
.234
79
=
.014
52
=
.063
25
=
.149
B
=
.238
78
=
.016
51
=
.067
24
=
.152
C
=
.242
77
=
.018
50
=
.070
23
=
.154
D
=
.246
76
=
.020
49
=
.073
22
=
.157
E
=
.250
75
=
.021
48
=
.076
21
=
.159
F
=
.257
74
=
.022
47
=
.078
20
=
.161
G
=
.261
73
=
.024
46
=
.081
19
=
.166
H
=
.266
72
=
.025
45
=
.082
18
=
.169
I
=
.272
71
=
.026
44
=
.086
17
=
.173
J
=
.277
70
=
.028
43
=
.089
16
=
.177
K
=
.281
69
=
.029
42
=
.093
15
=
.180
L
=
.290
68
=
.031
41
=
.096
14
=
.182
M
=
.295
67
=
.032
40
=
.098
13
=
.185
N
=
.302
66
=
.033
39
=
.099
12
=
.189
O
=
.316
65
=
.035
38
=
.101
11
=
.191
P
=
.323
64
=
.036
37
=
.104
10
=
.193
Q
=
.332
63
=
.037
36
=
.106
9
=
.196
R
=
.339
62
=
.038
35
=
.110
8
=
.199
S
=
.348
61
=
.039
34
=
.111
7
=
.201
T
=
.358
60
=
.040
33
=
.113
6
=
.204
U
=
.368
59
=
.041
32
=
.116
5
=
.205
V
=
.377
58
=
.042
31
=
.120
4
=
.209
W
=
.386
57
=
.043
30
=
.128
3
=
.213
X
=
.397
56
=
.046
29
=
.136
2
=
.221
Y
=
.404
55
=
.052
28
=
.140
1
=
.228
Z
=
.413
54
=
.055
27
=
.144
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