Millimeters to Inches Converter (mm to in) – Formula & Table

How to convert millimeters to inches

One millimeter equals 0.0393700787 inches – put the other way, one inch is 25.4 millimeters. So divide the number of millimeters by 25.4. For example, 5 mm ÷ 25.4 = 0.1968503937 in.

Millimeters to inches table

Millimeters (mm)	Inches (in)
0.1 mm	0.0039370079 in
0.5 mm	0.0196850394 in
1 mm	0.0393700787 in
2 mm	0.0787401575 in
3 mm	0.1181102362 in
4 mm	0.157480315 in
5 mm	0.1968503937 in
6 mm	0.2362204724 in
7 mm	0.2755905512 in
8 mm	0.3149606299 in
9 mm	0.3543307087 in
10 mm	0.3937007874 in
15 mm	0.5905511811 in
20 mm	0.7874015748 in
25 mm	0.9842519685 in
30 mm	1.181102362 in
50 mm	1.968503937 in
75 mm	2.952755906 in
100 mm	3.937007874 in
250 mm	9.842519685 in
500 mm	19.68503937 in
1,000 mm	39.37007874 in

Need it the other way? Use the inches to millimeters converter, or the unit converter for any other length unit.

Questions

How many inches are in a millimeter?

1 mm = 0.0393700787 in.

How many millimeters are in a inch?

1 in = 25.4 mm.

What is 10 mm in in?

10 mm = 0.3937007874 in.