Useful Conversion Factors & Tables
|
Inch
|
in Decimals
|
Millimeters
|
|
–
|
0.03937
|
1
|
|
1/16
|
0.0625
|
1.587
|
|
–
|
0.07874
|
2
|
|
3/32
|
0.09375
|
2.381
|
|
–
|
0.11811
|
3
|
|
1/8
|
0.125
|
3.175
|
|
5/32
|
0.15625
|
3.968
|
|
–
|
0.15748
|
4
|
|
3/16
|
0.187
|
4.762
|
|
–
|
0.19685
|
5
|
|
7/32
|
0.21875
|
5.556
|
|
–
|
0.23622
|
6
|
|
1/4
|
0.25
|
6.35
|
|
–
|
0.275591
|
7
|
|
9/32
|
0.28125
|
7.143
|
|
5/16
|
0.3125
|
7.937
|
|
–
|
0.314961
|
8
|
|
–
|
0.354331
|
9
|
|
3/8
|
0.375
|
9.525
|
|
–
|
0.393701
|
10
|
|
–
|
0.433071
|
11
|
|
7/16
|
0.4375
|
11.112
|
|
–
|
0.472441
|
12
|
|
1/2
|
0.5
|
12.7
|
|
–
|
0.511811
|
13
|
|
–
|
0.551181
|
14
|
|
9/16
|
0.5625
|
14.287
|
|
–
|
0.590551
|
15
|
|
5/8
|
0.625
|
15.875
|
|
–
|
0.629921
|
16
|
|
–
|
0.669291
|
17
|
|
|
Inch
|
in Decimals
|
Millimeters
|
|
–
|
0.708661
|
18
|
|
–
|
0.748031
|
19
|
|
3/4
|
0.75
|
19.05
|
|
–
|
0.787402
|
20
|
|
–
|
0.826772
|
21
|
|
–
|
0.866142
|
22
|
|
7/8
|
0.875
|
22.225
|
|
–
|
0.905512
|
23
|
|
15/16
|
0.9375
|
23.812
|
|
–
|
0.944882
|
24
|
|
–
|
0.984252
|
25
|
|
1
|
1
|
25.4
|
|
–
|
1.023622
|
26
|
|
–
|
1.062992
|
27
|
|
–
|
1.102362
|
28
|
|
1-1/8
|
1.125
|
28.575
|
|
–
|
1.141732
|
29
|
|
–
|
1.181102
|
30
|
|
–
|
1.220472
|
31
|
|
1-1/4
|
1.25
|
31.75
|
|
–
|
1.259843
|
32
|
|
–
|
1.299213
|
33
|
|
–
|
1.338583
|
34
|
|
1-3/8
|
1.375
|
34.925
|
|
–
|
1.377953
|
35
|
|
–
|
1.417323
|
36
|
|
–
|
1.456693
|
37
|
|
–
|
1.496063
|
38
|
|
1-1/2
|
1.5
|
38.1
|
|
–
|
1.535433
|
39
|
|
–
|
1.574803
|
40
|
|
|
Inch
|
in Decimals
|
Millimeters
|
|
–
|
1.614173
|
41
|
|
1-5/8
|
1.625
|
41.275
|
|
–
|
1.653543
|
42
|
|
–
|
1.692913
|
43
|
|
–
|
1.732283
|
44
|
|
1-3/4
|
1.75
|
44.45
|
|
–
|
1.771654
|
45
|
|
–
|
1.811024
|
46
|
|
–
|
1.850394
|
47
|
|
1-7/8
|
1.875
|
47.625
|
|
–
|
1.889764
|
48
|
|
–
|
1.929134
|
49
|
|
–
|
1.968504
|
50
|
|
2
|
2
|
50.8
|
|
–
|
2.007874
|
51
|
|
–
|
2.047244
|
52
|
|
–
|
2.086614
|
53
|
|
2-1/8
|
2.125
|
53.975
|
|
–
|
2.125984
|
54
|
|
–
|
2.165354
|
55
|
|
–
|
2.204724
|
56
|
|
–
|
2.244094
|
57
|
|
2-1/4
|
2.25
|
57.15
|
|
–
|
2.283465
|
58
|
|
–
|
2.322835
|
59
|
|
–
|
2.362205
|
60
|
|
2-3/8
|
2.375
|
60.325
|
|
–
|
2.401575
|
61
|
|
–
|
2.440945
|
62
|
|
–
|
2.480315
|
63
|
|
2-1/2
|
2.5
|
63.5
|
|
Temperatures
|
Fahrenheit
|
Celcius
|
|
-250
|
-418
|
|
-50
|
-58
|
|
-40
|
-40
|
|
-22
|
-30
|
|
-4
|
-20
|
|
14
|
-10
|
|
32
|
0
|
|
41
|
5
|
|
50
|
10
|
|
59
|
15
|
|
68
|
20
|
|
75
|
24
|
|
86
|
30
|
|
100
|
38
|
|
212
|
100
|
|
608
|
320
|
|
806
|
430
|
|
