Inch to Millimeter Converter
1 in = 25.4000 mm
FORMULA
1 in = 25.4000 mm
CONVERSION TABLE
| Inch (in) | Millimeter (mm) |
|---|---|
| 1 in | 25.4 mm |
| 5 in | 127 mm |
| 10 in | 254 mm |
| 25 in | 635 mm |
| 50 in | 1,270 mm |
| 100 in | 2,540 mm |
| 250 in | 6,350 mm |
| 500 in | 12,700 mm |
| 1,000 in | 25,400 mm |
COMMON VALUES
RELATED CONVERSIONS
About Inch (in)
One twelfth of a foot (25.4 mm exactly), the inch is used for screen sizes, tire dimensions, and pipe diameters throughout North America. Display manufacturers market monitors and televisions by their diagonal measurement in inches, from 5-inch smartphones to 85-inch home theater screens.
About Millimeter (mm)
At one thousandth of a meter, the millimeter provides the precision needed in mechanical engineering, machining tolerances, and rainfall measurement. Bolts, bearings, and smartphone thickness are all specified in millimeters, and weather stations report precipitation depth in mm accumulated over a given period.
How to Convert Inch to Millimeter
The conversion formula is: 1 in = 25.4000 mm. To convert from Inch (in) to Millimeter (mm), use the formula above or the interactive converter at the top of this page.
FAQ
How many Millimeter in 1 Inch?
1 Inch (in) equals 25.4000 Millimeter (mm).
How to convert Inch to Millimeter?
Multiply the Inch value by 25.4000 to get the equivalent in Millimeter. Formula: 1 in = 25.4000 mm
What is the formula for Inch to Millimeter conversion?
1 in = 25.4000 mm
Glossary
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Meter
The SI base unit of length, defined as the distance light travels in 1/299,792,458 of a second.
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Mile
An imperial unit of length equal to 5,280 feet, 1,760 yards, or exactly 1.609344 kilometers.
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Foot
An imperial unit of length equal to 12 inches or exactly 0.3048 meters, subdivided into 12 inches.
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Inch
An imperial unit of length defined as exactly 2.54 centimeters or 1/12 of a foot.
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Kilometer
A metric unit of length equal to 1,000 meters or approximately 0.621371 miles.