Unit Converter

Convert length, weight and temperature units instantly — free and offline-friendly.

✅ Result

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🔒 Private by design: this tool runs 100% in your browser — nothing is uploaded anywhere.

Free length, weight & temperature converter

This free unit converter switches between length units (km, miles, feet, inches…), weight units (kg, pounds, ounces, grams…) and temperature (°C, °F, Kelvin) instantly.

Handy for recipes, travel, studies and online shopping across metric and imperial systems. All conversions happen on your device.

How to use

  1. Pick a category: length, weight or temperature.
  2. Enter the value and choose the from/to units.
  3. Read the result instantly — or tap ⇄ Swap to reverse the conversion.