Length Converter
Convert between meters, kilometers, miles, feet, inches, centimeters, and more, all in one place. Free and instant.
About Length Converter
A length converter handles a constant real-world need: moving between metric and imperial units quickly and accurately. Whether you're reading a recipe, checking a race distance, measuring for furniture, or navigating with a map in a different unit system, conversion errors compound fast. This tool covers the everyday units people actually use, from millimeters to nautical miles, in one place.
Every unit is defined by an exact conversion factor to the meter, so results are consistent regardless of direction. Kilometers multiply by 0.621371 to become miles, inches divide by 39.3701 to become meters, and so on. Because the tool converts through a common base unit, chains like feet to centimeters stay accurate without intermediate rounding. Results are shown to a sensible number of decimal places, which is far more precision than practical use requires.
Travelers comparing distances and speed limits abroad, DIYers measuring rooms and materials, and runners converting race distances all use it regularly. Students working through unit-conversion problems benefit from the instant check on their own arithmetic, and international teams collaborating on specs in different unit systems find it a dependable common reference. It is equally at home in the workshop and the classroom.
How to Use
- Enter a length value.
- Pick the unit you're converting from and the unit you want.
- Read the converted result, updated live as you type.
Example
5 kilometers 3.107 miles
One kilometer equals 0.621371 miles, so 5 km × 0.621371 = 3.107 miles. Useful for race distances, maps, and travel.
FAQ
Which length units are supported?
Millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles.
How accurate are the results?
Conversions use standard exact factors and round to a sensible number of decimal places, far more precision than everyday use needs.
Can I convert multiple values at once?
This tool converts one value at a time. For bulk conversions, convert each value or copy results as you go.
What exactly is a nautical mile?
It is 1,852 meters, defined from the Earth's circumference and used mainly in aviation and maritime navigation. One nautical mile equals about 1.15 statute miles.
Can I convert between metric and imperial in one step?
Yes, choose any supported unit as the source and any other as the target, such as feet to centimeters or kilometers to yards, and the result is computed directly.