Use this free online calculator to convert Millimeter to Inch instantly. This metric length conversions conversion tool provides accurate results for all your measurement needs.

Quick Reference

1 Millimeter = 0.039370 Inch

1 Inch = 25.4000 Millimeter

Millimeter to Inch Conversion Formula

To convert Millimeter to Inch, multiply by 0.039370.

Inch = Millimeter × 0.039370

Millimeter = Inch × 25.4000

To convert Inch back to Millimeter, divide by 0.039370 (or multiply by 25.4000).

About These Units

About Millimeter

1 millimetre = SI unitsrn1×10-3 m 0.1 cm The millimetre (American spelling: millimeter, symbol mm) is a unit of length in the metric system, equal to one thousandth of a metre, which is the current SI base unit of length.

About Inch

The inch is a traditional measurement of distance equal to 1/12 of a foot, or exactly 2.54 centimeters. The Old English word "ynce" is derived from the Latin uncia, meaning a 1/12 part. It follows that "inch" and "ounce" actually have the same origin. The inch was originally defined in England in two ways: as the length of three barleycorns laid end to end, or as the width of a man's thumb at the base of the nail.

Millimeter to Inch Conversion Table

Millimeter	Inch	Inch	Millimeter
0.1	3.937e-3	0.1	2.5400
0.5	0.019685	0.5	12.7000
1	0.039370	1	25.4000
2	0.078740	2	50.8000
5	0.196850	5	127.0000
10	0.393701	10	254.0000
20	0.787402	20	508.0000
25	0.984252	25	635.0000
50	1.9685	50	1270.00
100	3.9370	100	2540.00
250	9.8425	250	6350.00
500	19.6850	500	12700.00
1000	39.3701	1000	25400.00

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