Length converter
Enter a length in any unit and instantly see the equivalent in millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles. All conversion happens in your browser.
How it works
Each unit is stored as a multiplier relative to a base unit. When you enter a value, the tool converts it to the base unit first, then multiplies by each target unit's factor. Temperature is handled separately using its own formulas (°C → °F: multiply by 9/5 then add 32; °C → K: add 273.15). All conversion runs in your browser. Our servers are not involved.
Processing runs in your browser
All conversions happen instantly in your browser tab. Our servers are not involved at any point.
Related operations
For converting between bytes, kilobytes, and gigabytes, try the byte converter. To work with fractions alongside metric values, use the fraction calculator. For taking a percentage of a converted value, see the percentage calculator.
Frequently asked questions
- How many centimeters are in an inch?
- 1 inch equals 2.54 centimeters exactly. This is the defined conversion factor used by all metric-imperial length conversions.
- How do I convert feet to meters?
- Multiply the number of feet by 0.3048. For example, 6 feet × 0.3048 = 1.8288 meters.
- What is the difference between a mile and a kilometer?
- 1 mile equals 1.60934 kilometers. A kilometer is about 62% the length of a mile.