Inches (in) to Millimeters converter
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How to convert Inches to Millimeters
1 inch is equal to 25.4 millimeters:
1 in = 25.4 mm
The distance d in millimeters (mm) is equal to the distance d in inches (in) times 25.4:
d(mm) = d(in) × 25.4
Example 1
Convert 20 in to Millimeters:
d(mm) = 20 in × 25.4 = 508 mm
Example 2
Convert 50 in to Millimeters:
d(mm) = 50 in × 25.4 = 1270 mm
Inches to Millimeters conversion table
| Inches (in) | Millimeters (mm) |
|---|---|
| 0.01 in | 0.254 mm |
| 0.1 in | 2.54 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 |
Unit Definitions
Inch
Inch (in or ″) is a unit of length in the imperial and US customary systems. One inch is exactly 25.4 millimeters and 1/12 of a foot.
Millimeter
Millimeter (mm) is a unit of length in the metric system. One millimeter is equal to 1/1000 of a meter (m), 1/10 of a centimeter (cm), and 1/25.4 of an inch (in).