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Inches to mm Converter
Use our length converter to quickly convert inches to millimeters.
Length Converter
How Many Millimeters Are in an Inch?
One inch is equal to 25.4 millimeters.
Convert Inches to Millimeters
Use the length converter on this page or the following formula to convert inches (in) to millimeters (mm):
mm = in × 25.4
Popular Length Unit Conversions
Conversion Table: Inches to mm
| Inches to mm |
|---|
| 1 in = 25.4 mm |
| 2 in = 50.8 mm |
| 3 in = 76.2 mm |
| 4 in = 101.6 mm |
| 5 in = 127.0 mm |
| 6 in = 152.4 mm |
| 7 in = 177.8 mm |
| 8 in = 203.2 mm |
| 9 in = 228.6 mm |
| 10 in = 254.0 mm |
| 11 in = 279.4 mm |
| 12 in = 304.8 mm |
| 13 in = 330.2 mm |
| 14 in = 355.6 mm |
| 15 in = 381.0 mm |
| 16 in = 406.4 mm |
| 17 in = 431.8 mm |
| 18 in = 457.2 mm |
| 19 in = 482.6 mm |
| 20 in = 508.0 mm |