Instant answers Live updating results
The length calculator results updates as you type, so you always see the latest value.
Length and Distance Converter
Use our free online converter tool to swap between any unit of distance and length instantly.
Distance & Length Converter
Convert meters to kilometers instantly
Instant results
No sign-up
100% free
Units you can swap between
What distance units does the converter support?
Our length unit converter supports 30 units of distance, so you'll always have the measurements you need to convert.
Meter m
Kilometer km
Centimeter cm
Millimeter mm
Micrometer µm
Nanometer nm
Inch in
Foot ft
Yard yd
Mile mi
Nautical mile nmi
Furlong fur
Fathom ftm
Chain ch
Rod / perch rd
League lea
Ångström Å
Planck length ℓₚ
Picometer pm
Light year ly
Parsec pc
Gigaparsec Gpc
Step (walking) step
Football field FF
Decimeter dm
Hectometer hm
Megameter Mm
Atom-scale length atom
Microinch µin
Step-by-step help
How to use the length & distance converter
How to convert length units
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Type the number you want to convert into the input box of the distance converter.
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Choose the starting unit on the left, using the search box or the buttons below it.
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Pick the unit you want to convert to on the right. The length converter updates the result instantly.
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Change the number of decimal places with the button if you need more precision.
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Copy the result with one click and paste it anywhere you wish.
Tips for converting length
- Use the search bar to find units - just type a word like “nautical” or “light year”.
- Click the arrow symbol to swap the selected units in each box.
- Add or remove comma separators from the numbers using the button at the top.
Real-world examples
When might you need to convert length units?
Here are a few common examples of where a length unit converter may be used.
Travel and navigation
Compare map distances in kilometers with hiking guides in miles, or switch between nautical miles and standard miles when planning routes at sea.
Building and DIY
Quickly convert inches into millimeters and centimeters for accuracy in DIY projects or technical sketches.
Study, science, and engineering
Choose your data accuracy by converting to any unit from nanometers or micrometers up to meters and kilometers when analyzing results.
Everyday life
Use the distance unit converter to check running distances, compare step counts with real-world meters, or help visualize certain distances using football field equivalents.
Useful Features
Features of the length & distance converter
Our distance unit converter is carefully crafted to have everything you need to convert measurement units.
Flexible precision Decimal control
Choose how many decimal places you want to see - our distance measurement converter is useful for both quick estimates and detailed technical work.
Clear layout Side-by-side comparison
'From' and 'To' values sit next to each other, so you always know which way the conversion is running and which units you selected.
Unit search Find any distance quickly
Search for any measurement unit by name or symbol and pick from the drop down list of results.
No Account Needed
Free to use, no limits, and no sign up
The length & distance converter is always ready when you open this page. There is no account to create, no trial to remember, and no hidden paywall after a certain number of conversions.
Finish your conversion
Ready to swap distance units?
Start converting your length measurements units now or navigate to our other free converter tools using the buttons below.