Convert Celsius to Kelvin
0 °C = 273.15 K
K = °C + 273.15
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Good to know
Kelvin starts at absolute zero, so add 273.15: 0 °C is 273.15 K and 25 °C is 298.15 K. Kelvin is written without a degree sign — 300 K, not 300 °K.
Celsius to Kelvin conversion table
| Celsius (°C) | Kelvin (K) |
|---|---|
| -273.15 °C | 0 K |
| -200 °C | 73.15 K |
| -100 °C | 173.15 K |
| -40 °C | 233.15 K |
| 0 °C | 273.15 K |
| 20 °C | 293.15 K |
| 25 °C | 298.15 K |
| 37 °C | 310.15 K |
| 100 °C | 373.15 K |
| 200 °C | 473.15 K |
| 500 °C | 773.15 K |
| 1,000 °C | 1,273.15 K |
Related conversions
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Celsius to Kelvin — questions
How do you convert Celsius to Kelvin?
Add 273.15 to the Celsius temperature. For example, 25 °C + 273.15 = 298.15 K.
What is -273.15 °C in Kelvin?
-273.15 °C = 0 K.
What is 0 °C in Kelvin?
0 °C = 273.15 K.
What is 25 °C in Kelvin?
25 °C = 298.15 K.
What is 100 °C in Kelvin?
100 °C = 373.15 K.