About K to °C
Turn lab and astronomy temperatures (the Sun’s surface is about 5,778 K) into everyday Celsius.
Temperature scales have different zero points, so you cannot just multiply: use °C = K − 273.15. For example, 293.15 K = 20 °C.
Kelvin: the SI scale starting at absolute zero; a change of 1 K equals 1 °C. Celsius: water freezes at 0 °C and boils at 100 °C at sea level.
Kelvin to Celsius conversion table
Formula: °C = K − 273.15
| Kelvin | Celsius |
|---|---|
| 0 K | -273.15 °C |
| 77 K | -196.15 °C |
| 100 K | -173.15 °C |
| 200 K | -73.15 °C |
| 250 K | -23.15 °C |
| 273.15 K | 0 °C |
| 293.15 K | 20 °C |
| 298.15 K | 25 °C |
| 300 K | 26.85 °C |
| 373.15 K | 100 °C |
| 500 K | 226.85 °C |
| 1,000 K | 726.85 °C |
| 5,778 K | 5,504.85 °C |
Values rounded to 6 significant figures.
How to do it
- 1
Type a value in Kelvin in the converter above (it is preset to K → °C).
- 2
Read the result instantly; tap Swap units to convert the other way.
- 3
Use the table for common values or the formula °C = K − 273.15 to convert by hand.