Free Length Converter
From marathon training plans in miles to furniture dimensions in centimeters, length units change with every border you cross. This free length converter translates between metric and imperial units instantly — kilometers, meters, miles, feet, inches and more — with a full table showing your value in every unit at once.
Value in all length units
| Unit | Value |
|---|
How to Use the Length Converter
- Enter a value in the input box above.
- Choose the units to convert from and to — use the ⇄ button to swap them instantly.
- See the result immediately, plus the value converted into every other length unit in the table below.
- Copy the result with one click to use it anywhere.
Features
Eleven length units including nautical miles for marine and aviation use, with micrometer and nanometer support for technical work. Results update live as you type, the ⇄ button swaps direction in one click, and the comparison table puts every conversion side by side.
Benefits & Use Cases
Travelers planning road trips, DIYers reading foreign blueprints, students doing physics homework, and shoppers checking international sizing all get reliable numbers in seconds. No app to install and no account needed — it just works.
Tips
One mile is exactly 1.609344 kilometers, and one inch is exactly 2.54 centimeters — these definitions never change, so conversions are exact. For rough mental math, 5 miles ≈ 8 km and 1 meter ≈ 3.28 feet.
Frequently Asked Questions
How many kilometers are in a mile?
Exactly 1.609344 kilometers. So 10 miles = 16.09344 km.
How do I convert feet to meters?
Multiply feet by 0.3048. For example, 6 ft × 0.3048 = 1.8288 m.
How many centimeters are in an inch?
Exactly 2.54 cm per inch, by international definition.
What is a nautical mile?
1,852 meters — one minute of latitude. It is the standard distance unit in aviation and marine navigation.
Does the converter work offline?
The page needs to load once, but all calculations run locally in your browser with no server round-trips.
Related Tools
Area Converter
Convert acres to square feet, hectares to acres, m² to ft² and more with NToolHub’s free area converter. Instant results, no sign-up needed.
Open tool →Volume Converter
Convert liters to gallons, milliliters to cups, fluid ounces to liters with NToolHub’s free volume converter. US and imperial units, no sign-up.
Open tool →Speed Converter
Convert km/h to mph, meters per second to knots, Mach to km/h with NToolHub’s free speed converter. Instant, accurate, no sign-up needed.
Open tool →Weight Converter
Convert kilograms to pounds, ounces to grams, stones to kg and more with NToolHub’s free weight converter. Fast, accurate, no sign-up needed.
Open tool →Temperature Converter
Convert Celsius, Fahrenheit and Kelvin instantly with NToolHub’s free temperature converter. Exact formulas, live results, no sign-up needed.
Open tool →