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Convert Inches to MM

Please provide values below to convert inch [in] to millimeter [mm], or vice versa.

From: inch
To: millimeter

Definition: Inch
Inch (symbol: in) is a length unit in the imperial and US customary systems of measurement. Since 1959, an inch was defined to be equivalent to 25.4 millimeters exactly in 1959. There are 12 inches in a foot and 36 inches in a yard.

Definition: Millimeter
Millimeter (symbol: mm) is a length unit in the SI (International System of Units). A millimeter equals to one thousandth of a meter.

Inch to Millimeter Conversion Table

Inch [in]Millimeter [mm]
0.01 in0.254 mm
0.1 in2.54 mm
1 in25.4 mm
2 in50.8 mm
3 in76.2 mm
5 in127 mm
10 in254 mm
20 in508 mm
50 in1270 mm
100 in2540 mm
1000 in25400 mm

How to Convert Inch to Millimeter

1 in = 25.4 mm
1 mm = 0.039370078740158 in

Example: convert 15 in to mm:
15 in = 15 × 25.4 mm = 381 mm

Convert Inch to Other Length Units