Celsius to Kelvin Converter

Convert temperature from Celsius to Kelvin instantly. Useful for science, weather references, and absolute temperature comparisons.

Negative Celsius values are allowed. Kelvin output cannot go below 0 K.

Result will appear here.
Reference Value

Privacy: runs locally in your browser. No inputs are stored or transmitted.

How it works

Uses the standard conversion: K = °C + 273.15.
Reverse formula: °C = K − 273.15

Examples

  • 0°C = 273.15 K
  • 25°C = 298.15 K
  • 100°C = 373.15 K

FAQ

  • How do you convert Celsius to Kelvin?

    Use the formula K = °C + 273.15.

  • Can Kelvin ever be negative?

    No. Kelvin cannot go below 0 K.

  • Can I reverse the conversion?

    Yes. Use the Reverse button to switch between Celsius to Kelvin and Kelvin to Celsius.

  • Are my inputs stored?

    No. All calculations run locally in your browser.

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