OpenToolkit

Unit Converter

Calculators

Convert common measurements, including temperature, instantly.

Open Unit Converter

How to use

  1. Choose a category and enter a value.
  2. Select the source and destination units.
  3. Read the converted value, which updates immediately.

Features

  • Temperature with Celsius, Fahrenheit and Kelvin
  • Length, weight, volume, speed and data-size conversions
  • Instant offline calculation
🔒 Private by design — Unit Converter runs entirely in your browser. Your files and text never leave your device.