Universal Unit Converter
Converting between metric and imperial units is one of the most common everyday calculations. This converter supports five categories — length, weight, temperature, volume, and speed — covering the units you'll actually need, from kilometers to miles, Celsius to Fahrenheit, and liters to gallons.
Select a category, choose your source and target units, and enter a value. Results appear instantly, and you can swap units with one click. Temperature conversions use the exact Celsius/Fahrenheit/Kelvin formulas rather than simple multiplication factors. All conversions happen locally in your browser.