Numerical Tables

 

 

Fractional to Decimal Equivalents

 

Fraction Decimal
1/64" 0.015625"
1/32" 0.031250"
3/64" 0.046875"
1/16" 0.062500"
5/64" 0.078125"
3/32" 0.093750"
7/64" 0.109375"
1/8" 0.125000"
9/96" 0.140625"
5/32" 0.156250"
11/64" 0.171875"
3/16" 0.187500"
13/64" 0.203125"
7/32" 0.218750"
15/64" 0.234375"
1/4" 0.250000"
 
Fraction Decimal
17/64" 0.265625"
9/32" 0.281250"
19/64" 0.296875"
5/16" 0.312500"
21/64" 0.328125"
11/32" 0.343750"
23/64" 0.359375"
3/8" 0.375000"
25/64" 0.390625"
13/32" 0.406250"
27/64" 0.421875"
7/16" 0.437500"
29/64" 0.453125"
15/32" 0.468750"
31/64" 0.484375"
1/2" 0.500000"
 
Fraction Decimal
33/64" 0.515625"
17/32" 0.531250"
35/64" 0.546875"
9/16" 0.562500"
37/64" 0.578125"
19/32" 0.593750"
39/64" 0.609375"
5/8" 0.625000"
41/64" 0.640625"
21/32" 0.656250"
43/64" 0.671875"
11/16" 0.687500"
45/64" 0.703125"
23/32" 0.718750"
47/64" 0.734375"
3/4" 0.750000"
 
Fraction Decimal
49/64" 0.765625"
25/32" 0.781250"
51/64" 0.796875"
13/16" 0.812500"
53/64" 0.828125"
27/32" 0.843750"
55/64" 0.859375"
7/8" 0.875000"
57/64" 0.890625"
29/32" 0.906250"
59/64" 0.921875"
15/16" 0.937500"
61/64" 0.953125"
31/32" 0.968750"
63/64" 0.984375"
1.00 1.000000"

 

 

Number Drill Sizes

 

Drill Number Drill Size
1 0.2280"
2 0.2210"
3 0.2130"
4 0.2090"
5 0.2055"
6 0.2040"
7 0.2010"
8 0.1990"
9 0.1960"
10 0.1935"
11 0.1910"
12 0.1890"
13 0.1850"
14 0.1820"
15 0.1080"
16 0.1770"
17 0.1730"
18 0.1695"
19 0.1660"
20 0.1610"
 
Drill Number Drill Size
21 0.1590"
22 0.1570"
23 0.1540"
24 0.1520"
25 0.1495"
26 0.1470"
27 0.1440"
28 0.1405"
29 0.1360"
30 0.1285"
31 0.1200"
32 0.1160"
33 0.1130"
34 0.1110"
35 0.1100"
36 0.1065"
37 0.1040"
38 0.1015"
39 0.0995"
40 0.0980"
 
Drill Number Drill Size
41 0.0960"
42 0.0935"
43 0.0890"
44 0.0860"
45 0.0820"
46 0.0810"
47 0.0785"
48 0.0760"
49 0.0730"
50 0.0700"
51 0.0670"
52 0.0635"
53 0.0595"
54 0.0550"
55 0.0520"
56 0.0465"
57 0.0430"
58 0.0420"
59 0.0410"
60 0.0400"
 
Drill Number Drill Size
61 0.0390"
62 0.0380"
63 0.0370"
64 0.0360"
65 0.0350"
66 0.0330"
67 0.0320"
68 0.0310"
69 0.2925"
70 0.0280"
71 0.0260"
72 0.0250"
73 0.0240"
74 0.0225"
75 0.0210"
76 0.0200"
77 0.0180"
78 0.0160"
79 0.0145"
80 0.0135"

 

 

Letter Drill Sizes

 

Letter Drill Size
A 0.234"
B 0.238"
C 0.242"
D 0.246"
E 0.250"
F 0.257"
G 0.261"
H 0.266"
I 0.272"
J 0.277"
K 0.281"
L 0.290"
M 0.295"
 
Letter Drill Size
N 0.302"
O 0.316"
P 0.323"
Q 0.332"
R 0.339"
S 0.348"
T 0.358"
U 0.368"
V 0.377"
W 0.386"
X 0.397"
Y 0.404"
Z 0.413"