About this Length converter
Convert meters, kilometers, miles, feet, inches, centimeters, and yards instantly. Enter a value, choose your source and target unit, and get an accurate result for travel distances, construction measurements, academic problems, and everyday reference.
How to use this length converter
Enter the number you want to convert.
Choose the source unit and target unit from the dropdowns.
Review the live result or open a preset example to jump into a common conversion.
When to use this converter
You are following a recipe, construction plan, or instruction manual written in a different measurement system and need to verify a dimension before cutting or building.
You are planning a trip and want to convert a driving distance between kilometers and miles to match your navigation app or road signs.
You are working on a school or university problem that requires converting between metric and imperial units and want to verify your answer.
You received product dimensions in inches or centimeters and need to confirm they will fit a specific space measured in a different unit.
Common problems and fixes
The converted result looks much larger or smaller than expected.
Check that you have the source and target units the right way around. Converting 1 kilometer to meters gives 1000 — not 0.001. Use the Swap button to reverse the conversion if needed.
I need more decimal places in the result.
The converter shows up to 10 significant decimal places. If your input uses very small values (below one millionth), the result switches to scientific notation automatically to avoid losing precision.
I cannot find nautical miles or light years.
This converter covers the most commonly needed everyday units. Nautical miles, light years, and other specialist units are outside the scope of this tool.
Available units
Millimeter
mm
Centimeter
cm
Meter
m
Kilometer
km
Inch
in
Foot
ft
Yard
yd
Mile
mi
Related unit converter pages
Frequently asked questions
How do I convert meters to feet?
Select meters as the source unit, feet as the target unit, enter your value, and the converter will calculate the result. One meter equals approximately 3.281 feet.
How many kilometers are in a mile?
One mile equals 1.609 kilometers. Enter 1 in the value field with miles as the source unit and kilometers as the target to verify.
How do I convert inches to centimeters?
Select inches as the source unit and centimeters as the target. One inch equals 2.54 centimeters exactly.
Is this length converter free to use?
Yes. It is free to use and works entirely in your browser with no sign-up required.
Can I convert centimeters to millimeters?
Yes. Select centimeters as the source and millimeters as the target. One centimeter equals 10 millimeters.
What units does this length converter support?
Millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.