Length Converter
Convert between inches, feet, yards, miles, millimeters, centimeters, meters, and kilometers.
Enter a value in any field — all other fields update instantly.
All values use internationally accepted conversion factors.
Length Units Explained
The metric system uses millimeters (mm), centimeters (cm), meters (m), and kilometers (km). The US customary system uses inches (in), feet (ft), yards (yd), and miles (mi). Scientific contexts also use nanometers, micrometers, and light-years.
Common Length Conversions
1 inch = 2.54 cm | 1 foot = 30.48 cm | 1 yard = 0.9144 m | 1 mile = 1,609.34 m | 1 km = 0.621371 miles
When Do You Need a Length Converter?
Length conversion is essential when following international recipes, reading foreign product dimensions, planning international travel distances, or working with imported building materials that use metric measurements.
Frequently Asked Questions
- There are exactly 2.54 centimeters in one inch.
- One meter equals approximately 3.28084 feet.
- One mile equals approximately 1.60934 kilometers.
- Length typically refers to the size of an object, while distance refers to the space between two points. Both use the same units and the same converter.