How do I convert inches to centimeters?
Multiply inches by 2.54. For example, 12 inches equals 30.48 centimeters.
Length Converter
Free online length converter for meters (m), kilometers (km), miles (mi), feet (ft), inches (in), and more. Fast and accurate conversions.
Last updated: September 2026
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1 m = 0.001 km
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Common length units
Convert units of length like meters, kilometers, miles, and feet. Use OmniUnit for fast conversions between common units without leaving the page.
- Meter (m)
- Kilometer (km)
- Centimeter (cm)
- Millimeter (mm)
- Mile (mi)
- Yard (yd)
- Foot (ft)
- Inch (in)
How to use this length converter
Convert length measurements between millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles. OmniUnit uses exact stored conversion factors and rounds only the displayed result.
What to check
- The inch is defined as exactly 2.54 centimeters.
- Metric prefixes scale by powers of ten; imperial units do not, so keep the exact conversion factors.
- Round only the final reported value to keep chained conversions accurate.
Quick answers
How many meters are in a mile?
One mile equals exactly 1,609.344 meters.
How do I convert feet to meters?
Multiply feet by 0.3048. For example, 10 feet equals 3.048 meters.
How many kilometers are in a mile?
One mile equals about 1.60934 kilometers. To convert miles to kilometers, multiply by 1.609344.