Kelvin to Celsius Converter (K to °C)
1 kelvin = -272.15 celsius. The kelvin is the SI unit of temperature and uses the same step size as Celsius, so converting only requires adding 273.15.
Result
300 K = 26.85 °C
How to convert kelvin to celsius
The kelvin is the SI unit of temperature and uses the same step size as Celsius, so converting only requires adding 273.15. 0 K is absolute zero, the lowest possible temperature, at -273.15 C.
Formula
°C = K − 273.15
Worked example
300 K = 26.85 °C
Kelvin to Celsius quick-reference table
| Kelvin (K) | Celsius (°C) |
|---|---|
| 0 K | -273.15 °C |
| 100 K | -173.15 °C |
| 273.15 K | 0 °C |
| 300 K | 26.85 °C |
| 373.15 K | 100 °C |
| 500 K | 226.85 °C |
Real-life examples
300 K is 26.85 C, a typical lab "room temperature" figure, and the surface of the Sun at about 5,772 K is roughly 5,499 C.
Frequently asked questions
How do I convert Celsius to Kelvin?
Add 273.15 to the Celsius value: 0 C = 273.15 K.
Is it "degrees Kelvin"?
No. Since 1967 the unit is simply "kelvin" (K), without the word degree.
What is 1 kelvin in celsius?
1 kelvin = -272.15 celsius (K to °C).
What is the formula to convert K to °C?
°C = K − 273.15. For example, 300 K = 26.85 °C.
How do I convert °C back to K?
Use the reverse converter: 1 celsius = 274.15 kelvin. Check: 26.85 °C converts back to 300 K.
Reverse conversion
Need the other direction? Celsius to Kelvin converter (°C to K): 1 celsius = 274.15 kelvin.
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