How to convert kelvins to degrees Celsius
A kelvin and a degree Celsius are exactly the same size; the two scales only start from different zero points. To convert, subtract 273.15 from the temperature in kelvins:
Mental-math shortcut: Subtract 273.15: 300 K = 26.85 °C.
Example
Convert 300 kelvins to degrees Celsius: 300 K − 273.15 = 26.85 °C.
Kelvin to Celsius conversion chart
| Kelvin (K) | Celsius (°C) |
|---|---|
| 0 | -273.15 |
| 50 | -223.15 |
| 77 | -196.15 |
| 100 | -173.15 |
| 200 | -73.15 |
| 250 | -23.15 |
| 273.15 | 0 |
| 280 | 6.85 |
| 290 | 16.85 |
| 293.15 | 20 |
| 300 | 26.85 |
| 310 | 36.85 |
| 373.15 | 100 |
| 500 | 226.85 |
| 1,000 | 726.85 |
What is the Kelvin scale?
The kelvin (K) is the SI base unit of temperature, used in science and engineering. The scale starts at absolute zero (0 K = −273.15 °C), the coldest possible temperature, so it has no negative values. Kelvins are written without a degree sign: water freezes at 273.15 K and boils at 373.15 K.
What is the Celsius scale?
The Celsius scale (°C) puts the freezing point of water at 0 °C and its boiling point at 100 °C at sea level. It is used for weather and everyday temperatures in almost every country. Normal human body temperature is about 37 °C.
Converting the other way? Use the Celsius to Kelvin converter.
Frequently asked questions
What is 0 K in °C?
0 K is -273.15 °C.
How do I convert Kelvin to Celsius?
Use the formula °C = K − 273.15. For example, 300 K is 26.85 °C.
What is 373.15 K in Celsius?
373.15 K is 100 °C.
How do I convert Celsius to Kelvin?
Use K = °C + 273.15, or try our Celsius to Kelvin converter.
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
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