Online Inches to Millimeters conversion
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Inches to Millimeters conversion
How to convert inches to millimeters
1 inch is equal to 25.4 millimeters:
1″ = 25.4mm
The distance d in millimeters (mm) is equal to the distance d in inches (″) times 25.4:
d(mm) = d(″) × 25.4
Example
Convert 20 inches to millimeters:
d(mm) = 20″ × 25.4 = 508mm
Inches to Millimeters
An inch (symbol: in) is a unit of length in the imperial and US customary systems of measurement. An inch was defined to be equivalent to exactly 25.4 millimeters in 1959. There are 12 inches in a foot and 36 inches in a yard.
The inch is mostly used in the United States, Canada, and the United Kingdom. It is also sometimes used in Japan (as well as other countries) in relation to electronic parts, like the size of display screens.
A millimeter (symbol: mm) is a unit of length in the International System of Units (SI). One millimeter is equal to one-thousandth (1/1,000) of a meter, which is defined as the distance light travels in a vacuum in a 1/299,792,458 second time interval.
The millimeter, or millimetre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "milli" is the prefix for 10-3. Millimeters can be abbreviated as mm; for example, 1 millimeter can be written as 1 mm.
How to convert inches to millimeters
1 inch is equal to 25.4 millimeters:
1″ = 25.4mm
The distance d in millimeters (mm) is equal to the distance d in inches (″) times 25.4:
d(mm) = d(″) × 25.4
Example
Convert 20 inches to millimeters:
d(mm) = 20″ × 25.4 = 508mm
Inches to millimeters conversion table
| Inches (") | Millimeters (mm) |
|---|---|
| 0.01 ″ | 0.254000 mm |
| 1/64 ″ | 0.396875 mm |
| 1/32 ″ | 0.793750 mm |
| 1/16 ″ | 1.587500 mm |
| 0.1 ″ | 2.540000 mm |
| 1/8 ″ | 3.175 mm |
| 1/4 ″ | 6.35 mm |
| 1/2 ″ | 12.7 mm |
| 1 ″ | 25.4 mm |
| 2 ″ | 50.8 mm |
| 3 ″ | 76.2 mm |
| 4 ″ | 101.6 mm |
| 5 ″ | 127.0 mm |
| 6 ″ | 152.4 mm |
| 7 ″ | 177.8 mm |
| 8 ″ | 203.2 mm |
| 9 ″ | 228.6 mm |
| 10 ″ | 254.0 mm |
| 20 ″ | 508.0 mm |
| 30 ″ | 762.0 mm |
| 40 ″ | 1016.0 mm |
| 50 ″ | 1270.0 mm |
| 60 ″ | 1524.0 mm |
| 70 ″ | 1778.0 mm |
| 80 ″ | 2032.0 mm |
| 90 ″ | 2286.0 mm |
| 100 ″ | 2540.0 mm |
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