Toolman

1 millimeter to inches

1 millimeter = 0.0393701 inches

Rounded to a practical precision: 0.04 in.

How the calculation works

One millimeter is 0.0393701 inches, so:

1 mm × 0.0393701 = 0.0393701 in

Reversing it, 0.0393701 inches ÷ 0.0393701 returns 1 millimeters.

Nearby values

MillimetersInches
0.5 mm0.019685 in
1 mm0.0393701 in
1.5 mm0.0590551 in
2 mm0.0787402 in
2.5 mm0.0984252 in
3 mm0.11811 in

About these units

Millimeter (mm) — A millimetre is one thousandth of a metre and is the default unit on engineering drawings and rulers.

Inch (in) — An inch is exactly 25.4 millimetres and is used for screen sizes, pipe diameters and paper dimensions.

Frequently asked questions

How many inches is 1 millimeter?

1 millimeter is 0.0393701 inches.

How do I convert millimeters to inches myself?

Multiply by 0.0393701. To go back, divide by 0.0393701 — or multiply by 25.4.

Is this figure exact?

The conversion factor between the millimeter and the inch is fixed by definition. The figure above is rounded for readability; the converter carries full precision.

Convert other values

Full millimeters to inches converter · All length converters