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What it is
Length Converter turns millimeters, centimeters, meters, kilometers, inches, feet, yards, miles and nautical miles into each other as you type. 10 miles equal about 16.09 km, and 1 inch is exactly 2.54 cm: handy for comparing metric and imperial measurements without doing the math by hand. It also includes the nautical mile (nmi, 1852 meters), the standard unit for air and sea navigation, often missing from generic converters and distinct from the statute mile (1609.344 meters).
- From mm to nautical miles: 9 units, including those used in navigation and aviation
- 10 miles ≈ 16.09 km, 1 inch = 2.54 cm exactly: instant conversions without a calculator
- Part of the universal converter: pairs naturally with area conversions for anyone working with land measurements, alongside the other 10 unit families
How it works
Pick the starting unit
Choose from millimeters, centimeters, meters, kilometers, inches, feet, yards, statute miles or nautical miles.
Type the value
Enter the number to convert: the result in the other unit appears instantly, no Enter key needed.
Check the common table
Below the result you'll find standard multiples (1, 5, 10, 25, 50, 100...) already converted for a quick comparison.
Features
Nautical mile included
Exactly 1852 meters, distinct from the statute mile (1609.344 m): useful for flight routes, sea navigation and conversions with the speed family (knots).
Precision across metric and imperial
cm, m and km on one side, inches, feet, yards and miles on the other: exact factors, no rough rounding.
Common conversions table
Standard multiples (1, 10, 100, 1000...) already calculated below the result, so you don't have to redo typical values by hand.
Part of the universal converter
The same tool as the other 11 families (mass, volume, area, speed...): jump to any other conversion from the /unit-converter hub.
FAQ
About 16.09 km (10 × 1.609344).
The nautical mile (nmi) measures exactly 1852 meters and is the standard used in air and sea navigation; the statute mile (mi) measures 1609.344 meters instead. They're two distinct units, not interchangeable.
Exactly 2.54 cm: that's been the official definition of the inch since 1959.
1 yard equals 3 feet, or 0.9144 meters; 1 foot equals 0.3048 meters.
This tool only converts lengths: to get an area you need two measurements (width and height) multiplied together, then you can convert the result with the dedicated area converter.