Length Converter
Convert between meters, kilometers, miles, feet, inches, centimeters, and more.
About this tool
Whether you're reading an American recipe in inches, checking European height in centimeters, or converting running distances from miles to kilometers, the Length Converter makes metric and imperial conversions instant.
How the Length Converter works
The Length Converter converts between 9 length units: meter (m), kilometer (km), centimeter (cm), millimeter (mm), mile (mi), yard (yd), foot (ft), inch (in), and nautical mile (nmi). Conversions use exact conversion factors (e.g., 1 inch = 2.54 cm exactly).
How to use this tool
- Enter the value you want to convert.
- Select the source unit from the 'From' dropdown.
- Select the target unit from the 'To' dropdown.
- Click 'Convert' to see the result.
Common use cases
Converting height from feet/inches to centimeters for an international form
Converting running distance from miles to kilometers
Understanding product dimensions in your preferred unit system
Converting nautical distances for maritime or aviation planning
Examples
- 5 feet 10 inches = 177.8 cm. 1 mile = 1.609 km. 1 nautical mile = 1.852 km.
- 100 meters = 328.08 feet = 109.36 yards. 1 inch = 2.54 cm (exact definition).
Tips & best practices
- 1 inch = 2.54 cm is an exact definition — there is no rounding or approximation in this conversion.
- For height conversion from feet/inches: multiply feet by 12, add remaining inches, then multiply by 2.54 for centimeters.
- Nautical miles (1,852 m) are used in maritime and aviation — they equal one minute of latitude.
Common mistakes to avoid
❌ Confusing meters with kilometers when converting — 1 km = 1,000 m. A 5K run is 5 kilometers, not 5,000 kilometers.
❌ Mixing up US and UK gallons (volume) with this length converter — use the data storage or weight converter for those measurements.
Frequently Asked Questions
How many meters are in a mile?
1 mile = 1,609.344 meters exactly.
How many centimeters are in a foot?
1 foot = 30.48 centimeters exactly.
What is a nautical mile?
A nautical mile equals 1,852 meters, used in maritime and aviation navigation. It represents one minute of latitude.
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