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Metric to Inches

Fasteners’ Metric to Inches Conversion Chart

Millimeters

 

Inches

 

Inches

 

Centimeters

 

Meters

 
 
Decimal

 
Fractional

 
 
 
0.3969
0.0156
1/64
0.04
0.0004
0.7925
0.0312
1/32
0.08
0.0008
1.0000
0.0394
 
0.10
0.0010
1.5875
0.0625
1/16
0.16
0.0016
2.0000
0.0788
 
0.20
0.0020
3.1750
0.1251
1/8
0.32
0.0032
3.0000
0.1182
 
0.30
0.0030
4.0000
0.1576
 
0.40
0.0040
5.0000
0.1970
 
0.50
0.0050
6.3500
0.2502
1/4
0.64
0.0064
7.0000
0.2758
 
0.70
0.0070
8.0000
0.3152
 
0.80
0.0080
9.0000
0.3546
 
0.90
0.0090
9.5250
0.3753
3/8
0.95
0.0095
10.0000
0.3940
 
1.00
0.0100
11.0000
0.4334
 
1.10
0.0110
12.0000
0.4728
 
1.20
0.0120
12.7000
0.5004
1/2
1.27
0.0127
13.0000
0.5122
 
1.30
0.0130
14.0000
0.5516
 
1.40
0.0140
15.0000
0.5910
 
1.50
0.0150
15.8750
0.6255
5/8
1.59
0.0159
16.0000
0.6304
 
1.60
0.0160
17.0000
0.6698
 
1.70
0.0170
18.0000
0.7092
 
1.80
0.0180
19.0500
0.7506
3/4
1.91
0.0191
20.0000
0.7880
 
2.00
0.0200
22.2250
0.8757
7/8
2.22
0.0222
25.4000
1.0000
1 inch
2.54
0.0254
30.0000
1.1820
 
3.00
0.0300
35.0000
1.3790
 
3.50
0.0350
40.0000
1.5760
 
4.00
0.0400
45.0000
1.7730
 
4.50
0.0450
50.0000
1.9700
 
5.00
0.0500
60.0000
2.3640
 
6.00
0.0600
70.0000
2.7580
 
7.00
0.0700
80.0000
3.1520
 
8.00
0.0800
90.0000
3.5460
 
9.00
0.0900
100.0000
3.9400
 
10.00
0.1000
110.0000
4.3340
 
11.00
0.1100
120.0000
4.7280
 
12.00
0.1200
130.0000
5.1220
 
13.00
0.1300
140.0000
5.5160
 
14.00
0.1400
150.0000
5.9100
 
15.00
0.1500
160.0000
6.3040
 
16.00
0.1600
170.0000
6.6980
 
17.00
0.1700
180.0000
7.0920
 
18.00
0.1800
190.0000
7.4860
 
19.00
0.1900
200.0000
7.8800
 
20.00
0.2000
220.0000
8.6680
 
22.00
0.2200
240.0000
9.4560
 
24.00
0.2400
260.0000
10.2440
 
26.00
0.2600
280.0000
11.0320
 
28.00
0.2800
300.0000
11.8200
 
30.00
0.3000
320.0000
12.6080
 
32.00
0.3200
340.0000
13.3960
 
34.00
0.3400
360.0000
14.1840
 
36.00
0.3600
400.0000
15.7600
 
40.00
0.4000
440.0000
17.3360
 
44.00
0.4400
480.0000
18.9120
 
48.00
0.4800
500.0000
19.7000
 
50.00
0.5000
750.0000
29.5500
 
75.00
0.7500
1000.0000
39.4000
 
100.00
1.0000
Eagle Fastener Corporation

453 E. Dartmoor Drive
Crystal Lake, IL 60014

PO Box 1259, Crystal Lake, IL 60014

Phone 815-455-7177
Phone 800-323-6142
Fax 815-455-7205

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