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mm to inches

1 millimeter = 0.03937007874 inch

Value

From

To

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How to convert mm to inches

Multiply by 0.03937007874. That single number is the whole conversion.

inches = mm × 0.03937007874

Going the other way, divide by it instead — or use inches to mm.

Which digits are real. One thousandth of a metre. Exact. Exactly 25.4 mm since 1959. Before that, the US and UK inch differed slightly.

mm to inches conversion table

mm		inches
1	mm	0.03937007874	in
2	mm	0.07874015748	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
40	mm	1.57480315	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

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