Length Converter
Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.
The Length Converter instantly converts between all common metric and imperial length units. Enter any value and see its equivalent in every other unit simultaneously.
Supported Units
- Metric: Millimeters (mm), Centimeters (cm), Meters (m), Kilometers (km)
- Imperial: Inches (in), Feet (ft), Yards (yd), Miles (mi)
Key Conversion Factors
1 meter = 3.28084 feet = 39.3701 inches. 1 kilometer = 0.621371 miles. 1 inch = 2.54 cm (exact). 1 foot = 12 inches = 30.48 cm. 1 yard = 3 feet = 0.9144 m. 1 mile = 5280 feet = 1.609344 km.
Length conversions are among the most common unit conversions needed in construction, engineering, travel, and everyday life. This tool supports both metric and imperial systems used around the world.
Frequently Asked Questions
How many feet are in a meter?
One meter equals approximately 3.28084 feet, or equivalently, one foot equals 0.3048 meters exactly.
How do I convert kilometers to miles?
Multiply by 0.621371. For example, 10 km = 6.21 miles. A quick estimate: multiply km by 0.6.
Is the inch-to-centimeter conversion exact?
Yes. By international agreement since 1959, 1 inch is defined as exactly 2.54 centimeters.