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Celsius to Kelvin Converter

Convert celsius to kelvin instantly and accurately. 1 °C = 274.15 K. Type any value below — the result updates as you type.

How to use this tool

  1. 1Enter the value in celsius.
  2. 2Read the converted result in kelvin instantly.
  3. 3Use the swap button to reverse the conversion, or pick any other unit.

Frequently asked questions

How do you convert celsius to kelvin?+

1 °C = 274.15 K. To convert, multiply the number of celsius by the conversion factor between °C and K. This calculator does it automatically as you type.

Is this celsius to kelvin converter accurate?+

Yes. It uses exact SI/standard conversion factors, so results match official temperature definitions to full precision.

Is it free and private?+

Completely free with no sign-up. All conversion happens in your browser — nothing is uploaded to a server.

Learn more

  • Celsius vs Kelvin: what's the difference?
  • Celsius to Kelvin conversion table
  • How many kelvin are in a celsius?