Convert Kelvin to Celsius
Enter a temperature in Kelvin to see it in Celsius. Conversion runs in your browser.
Kelvin to Celsius formula
°C = (K)-273.15Temperature scales differ in both their zero point and their degree size, so a conversion needs a multiplication and an offset — unlike length or weight, where a single factor is enough.
Conversion table
| Kelvin (K) | Celsius (°C) |
|---|---|
| -40K | -313.15°C |
| -20K | -293.15°C |
| 0K | -273.15°C |
| 10K | -263.15°C |
| 20K | -253.15°C |
| 25K | -248.15°C |
| 30K | -243.15°C |
| 37K | -236.15°C |
| 50K | -223.15°C |
| 75K | -198.15°C |
| 100K | -173.15°C |
| 200K | -73.15°C |
About Kelvin
The kelvin is the SI base unit of temperature, starting at absolute zero; it uses the same degree size as Celsius.
About Celsius
The Celsius scale puts the freezing point of water at 0° and its boiling point at 100° at standard pressure.
Frequently asked questions
What is 0K in Celsius?
0K equals -273.15°C.
What is normal body temperature?
37°C — about 37°C.
At what temperature do the two scales meet?
Only Celsius and Fahrenheit cross, at −40°. Kelvin and Rankine both start at absolute zero and never go negative.