Inches to MM Converter
Convert inches to millimeters (in to mm) instantly with our free online converter. Accurate results for engineering, manufacturing, and precise measurements. Includes conversion table.
How to convert inches to millimeters?
To convert inches to millimeters, multiply the number of inches by 25.4. This is because 1 inch equals 25.4 millimeters.
d(mm) = d(in) × 25.4
Example
Convert 10 inches to millimeters:
d(mm) = 10in × 25.4 = 254mm
How many millimeters in an inch?
There are 25.4 millimeters in one inch.
1in = 25.4mm
How many inches in a millimeter?
There are 0.0393701 inches in one millimeter.
1mm = 0.0393701in
What is an Inch?
An inch is a unit of length in the imperial and US customary systems of measurement. It is equal to 1/12 of a foot or 1/36 of a yard. The inch is commonly used in the United States, Canada, and the United Kingdom for measuring height, distance, and other dimensions.
What is a Millimeter?
A millimeter is a unit of length in the metric system, equal to 1/1000 of a meter. It is commonly used for precise measurements in engineering, manufacturing, and scientific applications.
Popular inches to millimeters conversion table
| Inches (in) | Millimeters (mm) |
|---|---|
| 0.1 in | 2.54 mm |
| 0.5 in | 12.7 mm |
| 1 in | 25.4 mm |
| 2 in | 50.8 mm |
| 3 in | 76.2 mm |
| 4 in | 101.6 mm |
| 5 in | 127 mm |
| 6 in | 152.4 mm |
| 7 in | 177.8 mm |
| 8 in | 203.2 mm |
| 9 in | 228.6 mm |
| 10 in | 254 mm |
| 20 in | 508 mm |
| 30 in | 762 mm |
| 40 in | 1016 mm |
| 50 in | 1270 mm |
| 60 in | 1524 mm |
| 70 in | 1778 mm |
| 80 in | 2032 mm |
| 90 in | 2286 mm |
| 100 in | 2540 mm |