Convert between metric and imperial units for length, weight, temperature, area, volume, and speed. Instant, accurate results.
Unit conversion is the process of expressing a measurement in different units while preserving its value. Most countries use the International System (SI/metric), while the US, UK, and a few others also use imperial units.
Temperature conversions use special formulas rather than simple multiplication: Celsius to Fahrenheit: °F = (°C × 9/5) + 32. Celsius to Kelvin: K = °C + 273.15.