Length Converter: Metric & Imperial Distance Units
Convert common metric, US customary, Imperial, and nautical length units through exact metre-based relationships, with a complete equivalents table.
Exact metric and international relationships
The metre is the SI base unit of length. Metric prefixes scale it by powers of ten, so one kilometre is exactly 1,000 metres and one centimetre is exactly 0.01 metre.
The international inch is exactly 0.0254 metre. Feet, yards, and international miles follow from that definition; a nautical mile is exactly 1,852 metres.
Distance units are not interchangeable
A statute mile is used for land distance, while a nautical mile is tied to navigation and is longer. The result labels both explicitly so a nautical value is never silently treated as an ordinary mile.
Examples
Metric to US customary
Input
1 metre
Show result
Result
About 3.28084 feet or 39.37008 inches
Road distance
Input
5 kilometres
Show result
Result
About 3.10686 miles
Frequently Asked Questions
How many feet are in a metre?
One metre is approximately 3.28084 feet.
How many kilometres are in a mile?
One international mile is exactly 1.609344 kilometres.
Is a nautical mile the same as a mile?
No. A nautical mile is exactly 1,852 metres; an international mile is exactly 1,609.344 metres.
References
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