How do I convert Kelvin to Celsius?

To convert Kelvin (K) to Celsius (°C), use the formula: °C = K − 273.15. For example, 1 K equals -272.15 °C.

How many °C are in one K?

There are -272.15 celsius in one kelvin (1 K = -272.15 °C).

What is the conversion formula for K to °C?

The exact conversion formula is: °C = K − 273.15. This converter uses this formula to give you an accurate result for any value you enter.

Kelvin to Celsius Converter

This free temperature converter converts Kelvin (K) to Celsius (°C) and back again. The conversion uses the formula °C = K − 273.15 — note the additive offset which makes temperature conversions non-proportional.

Type a value in either field — the result updates in real time. The reference table below shows common conversion values at a glance. All calculations run entirely in your browser with no data sent to any server.

Kelvin (K)	Celsius (°C)
0 K	-273.15 °C
20 K	-253.15 °C
37 K	-236.15 °C
100 K	-173.15 °C