Kelvin to Celsius converter
Type a Kelvin value and read Celsius instantly, with the other two scales alongside. The formula is °C = K − 273.15.
- 0 K = −273.15 °C
- 273.15 K = 0 °C
- 300 K = 26.85 °C
- 373.15 K = 100 °C
How to convert Kelvin to Celsius
°C = K − 273.15
Celsius is the everyday scale almost everywhere outside the United States: 0 °C is where water freezes and 100 °C where it boils at sea level. Step through a worked example:
°C = K − 273.15
- …
K to °C table
| Kelvin (K) | Celsius (°C) |
|---|---|
| 0 K | −273.15 °C |
| 50 K | −223.15 °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 |
| 255.37 K | −17.78 °C |
| 263.15 K | −10 °C |
| 273.15 K | 0 °C |
| 283.15 K | 10 °C |
| 293.15 K | 20 °C |
| 298.15 K | 25 °C |
| 300 K | 26.85 °C |
| 310.15 K | 37 °C |
| 323.15 K | 50 °C |
| 350 K | 76.85 °C |
| 373.15 K | 100 °C |
| 400 K | 126.85 °C |
| 500 K | 226.85 °C |
| 600 K | 326.85 °C |
| 1000 K | 726.85 °C |
| 5772 K | 5498.85 °C |
Need more rows? The full temperature conversion chart goes from −50 to 300 °C.
Questions
How do you convert Kelvin to Celsius?
Use °C = K − 273.15. For example, 293.15 K is 20 °C.
What is 0 K in Celsius?
0 K equals −273.15 °C.
What is 100 K in Celsius?
100 K equals −173.15 °C.
Why use Celsius?
Celsius is the everyday scale almost everywhere outside the United States: 0 °C is where water freezes and 100 °C where it boils at sea level.
Why is Kelvin written without a degree sign?
Since 1967 the SI unit has been "the kelvin" (K), a unit like the metre, not "degrees Kelvin". A kelvin is the same size as a Celsius degree.