Conversion Table

English
Measurement

Metric
Conversion

Decimal
Equivalent

1/8"
3.175
.1250
1/4"
6.350
.2500
9/32"
7.144
.2813
5/16"
7.938
.3125
11/32"
8.731
.3438
3/8"
9.525
.3750
7/16"
11.113
.4375
15/32"
11.906
.4688
1/2"
12.700
.5000
9/16"
14.288
.5625
19/32"
15.081
.5938
5/8"
15.875
.6250
21/32"
16.669
.6563
11/16"
17.463
.6875
23/32"
18.256
.7188
3/4"
19.050
.7500
25/32"
19.844
.7813
13/16"
20.638
.8125
7/8"
22.225
.8750
1"
25.400
1.0000
1-5/32"
29.369
1.1563
1-1/4"
31.750
1.2500
1-5/16"
33.338
1.3125
1-13/32"
35.719
1.4063
1-1/2"
38.10
1.5000
1-9/16"
39.688
1.5625
1-3/4"
44.450
1.7500
2"
50.800
2.000
2-1/8"
53.975
2.1250
2-1/4"
57.150
2.2500
2-1/2"
63.500
2.5000
3"
76.20
3.0000
3-1/4"
82.550
3.2500
3-1/2"
88.900
3.5000
3-9/16"
90.488
3.5625
3-3/4"
95.250
3.7500
4-1/4"
107.950
4.2500
4-1/2"
114.300
4.5000
4-9/16"
115.888
4.5625
4-5/8"
117.475
4.6250
4-3/4"
120.650
4.7500
5-1/2"
139.700
5.5000
5-3/4"
146.050
5.7500