This conversion tool converts between different units of measurement quickly.
Convert between Celsius, Fahrenheit, and Kelvin. Celsius is the standard unit in the United Kingdom.
°F = (°C × 9/5) + 32
K = °C + 273.15
In the UK, we use Celsius for weather, cooking, and science. Fahrenheit is mainly used in the US. Kelvin is the SI base unit of temperature used in scientific contexts.
Quick reference: 0°C = 32°F = 273.15 K (freezing point of water). 100°C = 212°F = 373.15 K (boiling point of water).
The UK uses Celsius (°C) as the standard temperature scale. Celsius was adopted officially in 1961. Weather forecasts, cooking temperatures, and scientific measurements all use Celsius. Fahrenheit is rarely used in the UK today.
Multiply the Celsius temperature by 9/5 (or 1.8) and add 32. For example, 20°C × 1.8 + 32 = 68°F.
Key UK temperatures: 0°C = freezing point, 10°C = mild autumn day, 20°C = comfortable summer day, 25°C = hot summer day, 30°C = very hot (UK heatwave), 37.8°C = normal body temperature.