mm to in
92 unitsResult3.937000e-2
0.03937in
1 mm × 0.03937 = 0.03937 in
Convert Millimeter to Inch (US survey) (mm to in)
1 millimeter = 0.03937 inches (US survey). Convert millimeters to inches (US survey) instantly, with the exact factor, the formula and a reference table of common values.
Formula
inches (US survey) = millimeters × 0.03937
mm to in conversion table
| mm | in |
|---|---|
| 1 mm | 0.03937 in |
| 2 mm | 0.07874 in |
| 3 mm | 0.11811 in |
| 5 mm | 0.19685 in |
| 10 mm | 0.3937 in |
| 20 mm | 0.7874 in |
| 50 mm | 1.9685 in |
| 100 mm | 3.937 in |
| 250 mm | 9.8425 in |
| 500 mm | 19.685 in |
| 1000 mm | 39.37 in |
What is a millimeter?
A millimeter is one thousandth of a meter, and ten millimeters make one centimeter. It is the unit engineers, machinists, and builders reach for when a fraction of a centimeter would be too rough.
A credit card is about 0.8 mm thick and a standard pencil lead is 0.7 mm across. Rainfall, screw sizes, plywood thickness, and phone dimensions are all usually given in millimeters.
In writing, the millimeter is usually shortened to "mm". One millimeter is 0.001 meters, and that ratio is what every figure on this page is built from.