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Length Converter
Convert between all length units — meters, feet, inches, miles, kilometers and more.
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📋 How to Use
- Enter the value you want to convert.
- Select the source unit (e.g. kilometers).
- Select the target unit (e.g. miles).
- The converted value appears instantly.
Tip: You can also change the target unit at any time — the conversion updates automatically.
About This Tool
Length Converter — Convert Any Length Unit Online Free
Whether you're working on a construction project, solving a math problem, cooking, or comparing international measurements, our free online length converter handles all common and uncommon length units instantly.
Supported Length Units
Metric: Kilometer (km), Meter (m), Centimeter (cm), Millimeter (mm), Micrometer (µm), Nanometer (nm)
Imperial/US: Mile (mi), Yard (yd), Foot (ft), Inch (in)
Nautical: Nautical mile
Astronomical: Astronomical Unit (AU), Light-year
Common Conversions
- 1 meter = 3.28084 feet = 39.3701 inches = 100 centimeters
- 1 kilometer = 0.621371 miles = 1,000 meters
- 1 mile = 1.60934 kilometers = 5,280 feet
- 1 foot = 0.3048 meters = 12 inches = 30.48 centimeters
- 1 inch = 2.54 centimeters = 25.4 millimeters
When Do You Need a Length Converter?
- Construction: Converting between metric plans and imperial building materials.
- Travel: Converting between kilometers (European road signs) and miles (US/UK road signs).
- Science: Converting between nanometers (light wavelengths) and other units.
- Sports: Track and field events use meters; some US sports use feet and yards.
- Online shopping: Clothing sizes often list measurements in both inches and centimeters.
- Cooking: Recipe ingredients may specify measurements in different units.
❓ Frequently Asked Questions
One inch equals exactly 2.54 centimeters.
One mile equals approximately 1.60934 kilometers.
One meter equals approximately 3.28084 feet.
One nautical mile equals 1.852 kilometers or 1.15078 statute miles. Nautical miles are used in navigation.
Yes. The conversions use internationally recognized exact or high-precision values.
Yes, completely free with no sign-up required.
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