mm to inches converter

1 mm = 0.0393701 in; 1 in = 25.4 mm (exact). To convert mm to inches, divide by 25.4.

mm in

Conversion formula

in = mm / 25.4

Conversion table

1 mm	0.0393701 in
2 mm	0.0787402 in
3 mm	0.11811 in
4 mm	0.15748 in
5 mm	0.19685 in
6 mm	0.23622 in
7 mm	0.275591 in
8 mm	0.314961 in
9 mm	0.354331 in
10 mm	0.393701 in
15 mm	0.590551 in
20 mm	0.787402 in
25 mm	0.984252 in
50 mm	1.9685 in
100 mm	3.93701 in
1000 mm	39.3701 in

Reverse conversion table

1 in	25.4 mm
2 in	50.8 mm
3 in	76.2 mm
4 in	101.6 mm
5 in	127 mm
6 in	152.4 mm
7 in	177.8 mm
8 in	203.2 mm
9 in	228.6 mm
10 in	254 mm
15 in	381 mm
20 in	508 mm
25 in	635 mm
50 in	1270 mm
100 in	2540 mm
1000 in	25400 mm

Key facts

1 millimetre	0.0393701 in
1 inch	25.4 mm (exact)
Formula	in = mm / 25.4
10 mm	0.393701 in

Frequently asked questions

How many inches is 1 mm?

1 mm equals 0.0393701 inches. Divide the millimetre value by 25.4.

How many mm in an inch?

There are exactly 25.4 mm in one inch.

Reverse conversion

Printable A4 conversion cheat sheet — see the Downloads page

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