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Celsius to Kelvin

Convert Celsius to Kelvin and back. Used in science and for light colour temperature.

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Common values

Formula

K = °C × 1 + 273.15

Kelvin is Celsius plus 273.15. Nothing is colder than 0 K (−273.15 °C).

Frequently asked questions

Q. How many K is 1 °C?

1 °C is 274.15 K, and 10 °C is 283.15 K. Type any value in the box above to convert instantly.

Q. And how many °C is 1 K?

1 K is -272.15 °C. This converter works both ways, so typing in the right box updates the left one.

Q. Where is this unit used?

Kelvin is Celsius plus 273.15. Nothing is colder than 0 K (−273.15 °C).

Other converters

Traditional units (geun, doe, majigi and so on) vary by region and product.