Length Converter
Convert metric and U.S./Imperial length units including millimeters, centimeters, meters, kilometers, inches, feet, yards, miles and nautical miles. It is useful for dimensions, travel, construction and engineering checks.
Conversions use exact defined factors where standards provide them and conventional reference factors otherwise. Round the result to the precision appropriate for your application.
How this tool works
Length conversion uses the meter as the base unit. Source value × meters per source unit ÷ meters per target unit gives the converted value.
Example
1 inch is exactly 0.0254 meter, so 12 inches equals exactly 0.3048 meter or 1 foot.
Common questions
How many centimeters are in an inch?
One inch is exactly 2.54 centimeters.
Is a nautical mile the same as a regular mile?
No. A nautical mile is exactly 1,852 meters, while an international mile is exactly 1,609.344 meters.