Kelvin to Celsius Converter (K to °C)

Type a value in kelvins to see it in degrees Celsius instantly.

300 K = 26.85 °C

Formula: °C = K − 273.15

300 K = 26.85 °C

Open in the full converter to compare with other temperature units.

How to convert kelvins to degrees Celsius

Subtract 273.15.

°C = K − 273.15

Example: 300 K − 273.15 = 26.85 °C

Useful reference points: liquid nitrogen boils at 77 K (−196.15 °C), room temperature is about 293–298 K, and the surface of the Sun is about 5,778 K.

K to °C conversion table

Kelvin (K)Celsius (°C)
0 K−273.15 °C
4 K−269.15 °C
77 K−196.15 °C
100 K−173.15 °C
173.15 K−100 °C
200 K−73.15 °C
233.15 K−40 °C
250 K−23.15 °C
273.15 K0 °C
283.15 K10 °C
293.15 K20 °C
298.15 K25 °C
300 K26.85 °C
310.15 K37 °C
373.15 K100 °C
500 K226.85 °C
1,000 K726.85 °C
5,778 K5,504.85 °C

About the units

Kelvin (K)

The kelvin is the SI base unit of thermodynamic temperature. It starts at absolute zero (0 K = −273.15 °C) and uses the same degree size as Celsius. It is written without a degree sign.

Degree Celsius (°C)

The Celsius scale puts the freezing point of water at 0 °C and the boiling point at 100 °C at standard pressure. One Celsius degree is the same size as one kelvin.

Frequently asked questions

How do I convert kelvins to degrees Celsius?

Use the formula °C = K − 273.15. Subtract 273.15. For example, 300 K − 273.15 = 26.85 °C.

What is 0 K in Celsius?

0 K is absolute zero: −273.15 °C (−459.67 °F).

Related conversions

Background reading: Temperature Scales.