mm to in
92 unitsResult3.937008e-2
0.03937007874in
1 mm × 0.03937007874 = 0.03937007874 in
Convert Millimeter to Inch (mm to in)
1 millimeter = 0.03937007874 inches. Convert millimeters to inches instantly, with the exact factor, the formula and a reference table of common values.
Formula
inches = millimeters × 0.03937007874
mm to in conversion table
| mm | in |
|---|---|
| 1 mm | 0.03937007874 in |
| 2 mm | 0.07874015748 in |
| 3 mm | 0.1181102362 in |
| 5 mm | 0.1968503937 in |
| 10 mm | 0.3937007874 in |
| 20 mm | 0.7874015748 in |
| 50 mm | 1.968503937 in |
| 100 mm | 3.937007874 in |
| 250 mm | 9.842519685 in |
| 500 mm | 19.68503937 in |
| 1000 mm | 39.37007874 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.