CalcKitHow to Use the Unit Converter
Metric or imperial? Celsius or Fahrenheit? A unit converter ends the confusion instantly. This tool converts between everyday units across six categories — length, weight, temperature, volume, area and speed — covering the metric/imperial pairs people search for most, like kg to lbs, cm to inches and Fahrenheit to Celsius.
Pick a category, enter your value, choose the From and To units, and press Convert. The result appears instantly, along with the conversion factor (for example, 1 inch = 2.54 cm) so you can reuse it. Changing either unit re-converts automatically.
Temperature is the tricky one because it isn't a simple multiplication: converting between Celsius, Fahrenheit and Kelvin needs an offset as well as a scale factor (for instance, °F = °C × 9/5 + 32). The calculator handles all of that behind the scenes.
Handy conversions to memorise: 1 kg ≈ 2.205 lbs, 1 inch = 2.54 cm exactly, 1 mile ≈ 1.609 km, and 0°C = 32°F. For money rather than measurements, head to our Currency Converter.