How to convert degrees Celsius to kelvins
Formula: K = °C + 273.15
Worked example: 20 °C → 20 + 273.15 = 293.15 K
Add 273.15 to a Celsius temperature to get kelvins. The step size is identical, so a rise of 10 °C is a rise of 10 K. Room temperature, 20 °C, is 293.15 K.
Degrees Celsius to kelvins conversion chart
| Degrees Celsius (°C) | Kelvins (K) |
|---|---|
| -40 °C | 233.15 K |
| -30 °C | 243.15 K |
| -20 °C | 253.15 K |
| -10 °C | 263.15 K |
| -5 °C | 268.15 K |
| 0 °C | 273.15 K |
| 5 °C | 278.15 K |
| 10 °C | 283.15 K |
| 15 °C | 288.15 K |
| 20 °C | 293.15 K |
| 25 °C | 298.15 K |
| 30 °C | 303.15 K |
| 35 °C | 308.15 K |
| 37 °C | 310.15 K |
| 40 °C | 313.15 K |
| 50 °C | 323.15 K |
| 60 °C | 333.15 K |
| 70 °C | 343.15 K |
| 80 °C | 353.15 K |
| 90 °C | 363.15 K |
| 100 °C | 373.15 K |
| 150 °C | 423.15 K |
| 180 °C | 453.15 K |
| 200 °C | 473.15 K |
| 220 °C | 493.15 K |
| 250 °C | 523.15 K |
What is a degree Celsius?
The Celsius scale puts the freezing point of water at 0 °C and its boiling point at sea level at 100 °C. It is the temperature scale of almost every country outside the US, of science and of medicine. A change of one degree Celsius equals a change of one kelvin.
What is a kelvin?
The kelvin is the SI unit of temperature. Its zero is absolute zero, the coldest possible temperature, and its steps are the same size as Celsius degrees, so 0 °C is 273.15 K. It is written without a degree sign and is used in physics, lighting color temperature and astronomy.