Input Length

Converted Length

Converted value will appear here

Length Converter - Distance & Length Unit Converter

Convert between meters, feet, inches, centimeters, kilometers, miles and more instantly

What is Length Converter?

Length Converter is a free online tool that converts between different units of length and distance. It supports metric units (meters, kilometers, centimeters, millimeters), imperial units (feet, inches, yards, miles), nautical units, and astronomical units. Perfect for engineering, construction, travel planning, and educational purposes.

How to Use Length Converter

  1. Enter the length value in the input field
  2. Select the source unit from the dropdown menu
  3. Select the target unit from the output dropdown
  4. The conversion happens automatically as you type
  5. Use the "Swap Units" button to quickly reverse the conversion
  6. Copy the result using the copy button
  7. Use "Clear" to reset all values

Supported Units

Metric Units

  • • Meters (m) - Base unit
  • • Kilometers (km) - 1,000 meters
  • • Centimeters (cm) - 0.01 meters
  • • Millimeters (mm) - 0.001 meters

Imperial Units

  • • Feet (ft) - 0.3048 meters
  • • Inches (in) - 0.0254 meters
  • • Yards (yd) - 0.9144 meters
  • • Miles (mi) - 1,609.344 meters

Specialized Units

  • • Nautical Miles (nm) - 1,852 meters
  • • Astronomical Units (AU) - 149,597,870,700 meters
  • • Light Years (ly) - 9,460,730,472,580,800 meters

Frequently Asked Questions

How accurate are the conversions?

All conversions use standard conversion factors and are accurate to 6 decimal places. For most practical purposes, this provides excellent precision.

Can I convert very large or small numbers?

Yes, the converter handles a wide range of values. For very large numbers, scientific notation may be used for display.

Is my data secure?

Yes, all calculations happen locally in your browser. Your data never leaves your device.

Can I use this offline?

Yes, once loaded, the converter works completely offline in your browser.