Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin instantly — with a live thermometer that runs cold-blue to hot-red.

Enter a temperature

Celsius°C

Fahrenheit°F

KelvinK

Common Reference Points

About Temperature Conversion

Celsius to Fahrenheit: °F = (°C × 9/5) + 32

Fahrenheit to Celsius: °C = (°F − 32) × 5/9

Celsius to Kelvin: K = °C + 273.15

Kelvin is the SI base unit of temperature. Absolute zero (0 K = −273.15°C) is the coldest possible temperature.

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