Celsius to Kelvin
Convert °C to K instantly — free, no sign-up.
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About Celsius (°C)
Celsius is the metric scale where water freezes at 0° and boils at 100°, used for everyday temperature almost everywhere outside the US.
About Kelvin (K)
Kelvin is the SI base unit of temperature, starting at absolute zero (−273.15°C), used throughout science and engineering.
How to convert °C to K
- Enter the temperature in °C in the box above.
- The K equivalent updates instantly.
- Use the swap button to convert K back to °C just as easily.