Convert UnitsFast, accurate unit conversions
Length

Mm to inches Converter

Convert millimeter to inch instantly.

Formulain = mm × 0.0393700787402
Sources and methodology1 mm = 0.0393700787402 in — exactly. exactly

Quick conversion table

millimeterinch
1 mm0.0393700787402 in
2 mm0.0787401574803 in
5 mm0.196850393701 in
10 mm0.393700787402 in
20 mm0.787401574803 in
25 mm0.984251968504 in
50 mm1.96850393701 in
100 mm3.93700787402 in

Unit definitions

millimeter (mm)

millimeter is a unit of Length. In this converter it is defined against the category base unit as 1 mm = 0.001 m.

inch (in)

inch is a unit of Length. In this converter it is defined against the category base unit as 1 in = 0.0254 m.

Example

10 mm = 0.393700787402 in

Sources and methodology

Definitions: BIPM SI Brochure and NIST conversion guidance. Methodology.