inchesmillimetres
Inches to Millimetres Converter
Convert inches to millimetres instantly. 1 in = 25.4 mm.
To convert inches to millimetres, enter your value above and the result appears as you type. 1 in = 25.4 mm, so multiply your inches value by 25.4. 10 in is 254 mm, and 100 in is 2540 mm. The calculation runs in your browser at full double precision.
Runs in your browserAbout converting INCHES to MILLIMETRES
1 in = 25.4 mm, so multiply your inches value by 25.4. 10 in is 254 mm, and 100 in is 2540 mm. The inch is defined as exactly 25.4 mm and the mile as exactly 1609.344 m, so metric–imperial length conversions are exact rather than approximate.
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