Millimeter to Inch

1 mm = 0.039370079 in

Value

From

Precision & format

Significant figures

Notation

Show fractions

1 mm equals

0.03937007874in

All 28 units

Meterm
0.0010
Kilometerkm
0.0000010
Centimetercm
0.13⁄32
Millimetermm
11
Milemi
6.213711922 × 10⁻⁷0
Yardyd
0.0010936132980
Footft
0.0032808398950
Inchin
0.039370078743⁄64
Decimeterdm
0.011⁄64
Hectometerhm
0.000010
Dekameterdam
0.00010
Micrometerµm
1,0001000
Nanometernm
1,000,000
Picometerpm
1,000,000,000
Femtometerfm
1,000,000,000,000
AngstromÅ
10,000,000
Nautical milenmi
5.399568035 × 10⁻⁷0
Furlongfur
0.0000049709695380
Chainch
0.000049709695380
Rodrd
0.00019883878150
Fathomftm
0.00054680664920
Linkli
0.0049709695380
Milmil
thou
39.3700787439 3⁄8
Handhh
4 in
0.0098425196851⁄64
Leaguelea
US land, 3 mi
2.071237307 × 10⁻⁷0
Astronomical unitau
6.684587122 × 10⁻¹⁵0
Light yearly
1.057000834 × 10⁻¹⁹0
Parsecpc
3.240779289 × 10⁻²⁰0

Millimeter to Inch table

Common Millimeter values converted to Inch
Millimeter (mm)	Inch (in)
1	0.039370079
2	0.078740157
5	0.19685039
10	0.39370079
20	0.78740157
50	1.9685039
100	3.9370079
250	9.8425197
500	19.685039
1,000	39.370079

How the conversion works

Multiply the millimeter figure by 0.03937007874 to get inch. Every factor on this site is anchored to the SI base unit for length, so the same number is used everywhere it appears.

Going the other way, 1 in = 25.4 mm — see inch to millimeter.

See all 28 length units →