Convert Millimetre to Inch

1 Millimetre = 0.0393701 Inch · 1 Inch = 25.4 Millimetre

Exact factor — no rounding beyond display precision.

Conversion formula

1 mm = 0.03937007874 in → mm = 0.0393701 in

The reverse direction: 1 in = 25.4 mm.

Quick reference

mm	in
1 mm	0.0393701 in
2 mm	0.0787402 in
3 mm	0.11811 in
5 mm	0.19685 in
10 mm	0.393701 in
20 mm	0.787402 in
25 mm	0.984252 in
50 mm	1.9685039 in
100 mm	3.9370079 in
250 mm	9.8425197 in
500 mm	19.685039 in
1,000 mm	39.370079 in

About these units

The Millimetre (mm) and the Inch (in) are both units of length. Under the standard definition, one mm equals exactly 0.0393701 in. This category's SI base unit is the metre.

Other conversions from Millimetre

mm to cm mm to m mm to km mm to ft mm to yd mm to mi mm to nmi mm to ly