Converters
Length Converter
Convert common length and distance units.
About This Tool
Convert one-dimensional lengths and distances between common metric, imperial, US customary, and nautical units. Along with the selected conversion, the page shows the same input across every supported unit for quick comparison. It is useful for dimensions, travel distances, product specifications, construction measurements, maps, and international documents where the source and target units differ.
How To Use It
- Enter the length or distance value.
- Select the unit used by the source measurement.
- Select the unit you want to convert to and read the result.
- Use the comparison table to check equivalent values in other units, or use Swap to reverse the selected conversion.
Examples
Meters to feet
Enter 10 meters and convert to Feet to get about 32.80839895 feet. For a measured object, round the converted result to a precision appropriate for the original measurement.
Miles to kilometers
Enter 5 miles and convert to Kilometers to get 8.04672 kilometers. One international mile is exactly 1.609344 kilometers.
Nautical miles to kilometers
Enter 1 nautical mile and convert to Kilometers to get 1.852 kilometers. Nautical miles are different from ordinary statute miles.
Useful Notes
Supported units
The converter includes millimeters, centimeters, meters, kilometers, inches, feet, yards, international miles, and nautical miles.
Common exact reference conversions
One inch is exactly 2.54 centimeters, one foot is 12 inches, one yard is 3 feet, and one international mile is 5,280 feet or exactly 1.609344 kilometers.
Nautical miles are different from ordinary miles
One nautical mile is exactly 1,852 meters and is commonly used in marine and aviation contexts. Do not substitute an ordinary international mile when the source specifically uses nautical miles.
Length is not area or volume
This converter handles one-dimensional measurements. Square units require area conversion factors and cubic units require volume conversion factors, so converting a room area or container volume as if it were a simple length will give the wrong result.
Precision should match the source
Conversions can display more decimal places than a physical measurement justifies. Keep extra digits while calculating if useful, then round the final value to match the precision of the original measurement or the requirement you are following.
FAQ
How many centimeters are in an inch?
One international inch equals exactly 2.54 centimeters.
How many kilometers are in a mile?
One international mile equals exactly 1.609344 kilometers.
Is a nautical mile the same as a regular mile?
No. A nautical mile is exactly 1.852 kilometers, while an international statute mile is exactly 1.609344 kilometers.
Can I convert decimal values?
Yes. Decimal inputs are supported, such as 2.5 miles or 0.75 meters.
Why does the result have several decimal places?
Some unit ratios produce longer decimals. Extra displayed precision helps avoid premature rounding, but the final value should usually be rounded to suit the precision of the source measurement.
Does this handle area or volume?
No. This tool converts one-dimensional length and distance units only. Use Area Converter for square units and Volume Converter for cubic or capacity units.
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