How do I convert Celsius to Kelvin?

To convert Celsius (°C) to Kelvin (K), use the formula: K = °C + 273.15. For example, 1 °C equals 274.15 K.

How many K are in one °C?

There are 274.15 kelvin in one celsius (1 °C = 274.15 K).

What is the conversion formula for °C to K?

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

Celsius to Kelvin Converter

This free temperature converter converts Celsius (°C) to Kelvin (K) and back again. The conversion uses the formula K = °C + 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.

Celsius (°C)	Kelvin (K)
0 °C	273.15 K
20 °C	293.15 K
37 °C	310.15 K
100 °C	373.15 K