Length Converter

Our free online unit converter tool helps you convert between length, weight, temperature and other measurements with high precision. All calculations are performed securely in your browser without any server uploads. Perfect for students, engineers, and professionals who need quick, accurate unit conversions.


Frequently Asked Questions

What length units can I convert between?
You can convert between meters, kilometers, centimeters, millimeters, inches, feet, yards, and miles. Both metric (SI) and imperial/US customary units are supported.
How accurate are the length conversions?
Our length conversions use precise conversion factors and maintain accuracy up to 6 decimal places. For example, 1 meter is exactly 3.28084 feet, and we use these exact conversion ratios.
Which unit system should I use?
The metric system (meters, kilometers, etc.) is used worldwide and in scientific contexts. The imperial system (feet, inches, miles) is commonly used in the US and UK. Choose based on your location or specific needs.
Why do I see different decimal places in results?
Results are displayed with up to 6 decimal places, but we show fewer decimals for larger units where extreme precision isn't typically needed. For example, kilometers might show 3 decimals while millimeters might show 6.
Can I convert negative lengths?
Yes, you can enter negative values, though in most practical applications, length measurements are positive. The conversion will maintain the negative sign across all units.
How do I convert between imperial units quickly?
Common imperial conversions: 1 foot = 12 inches, 1 yard = 3 feet, 1 mile = 5280 feet. Our converter handles these automatically, but these are useful references.