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Convert Inch to Millimeter.
Input the value of inches below to convert instantly to millimeters with standard conversions, definitions, and equations.
How to Convert Inches to Millimeters
To convert inch to millimeter, we use the official conversion formulas. Below is the mathematical formula, plain-English explanation, and a worked example.
inch-to-millimeter-formula.py
# Mathematical Formula
Value in Millimeters = Value in Inches × 25.4
# Worked Example (5 in)
5 in × 25.4 = 127.0000 mm
What is a Inch?
Inch (in)
Imperial and US customary unit equal to exactly 2.54 centimeters.
What is a Millimeter?
Millimeter (mm)
One-thousandth of a meter. Common metric unit for small lengths.
Inch to Millimeter Conversion Table
| Inch (in) | Millimeter (mm) |
|---|---|
| 1 in | 25.4 mm |
| 2 in | 50.8 mm |
| 3 in | 76.2 mm |
| 5 in | 127 mm |
| 10 in | 254 mm |
| 15 in | 381 mm |
| 20 in | 508 mm |
| 25 in | 635 mm |
| 50 in | 1270 mm |
| 100 in | 2540 mm |
| 250 in | 6350 mm |
| 500 in | 12700 mm |
| 1000 in | 25400 mm |
Millimeter to Inch Conversion Table
| Millimeter (mm) | Inch (in) |
|---|---|
| 1 mm | 0.03937 in |
| 2 mm | 0.07874 in |
| 3 mm | 0.11811 in |
| 5 mm | 0.19685 in |
| 10 mm | 0.3937 in |
| 15 mm | 0.59055 in |
| 20 mm | 0.7874 in |
| 25 mm | 0.98425 in |
| 50 mm | 1.9685 in |
| 100 mm | 3.93701 in |
| 250 mm | 9.84252 in |
| 500 mm | 19.68504 in |
| 1000 mm | 39.37008 in |
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