Convert °C to K instantly — formula, worked examples and a conversion table of common values.
Convert celsius (°C) to kelvin (K). Enter a value on either side and the other updates instantly — nothing is sent to a server.
One degree Celsius equals 274.15 K. The table below lists the values people look up most often, and each one links to a page with the worked calculation.
K = °C + 273.15| Celsius (°C) | Kelvin (K) |
|---|---|
| -40 | 233.15 |
| -20 | 253.15 |
| -10 | 263.15 |
| 0 | 273.15 |
| 10 | 283.15 |
| 20 | 293.15 |
| 25 | 298.15 |
| 30 | 303.15 |
| 37 | 310.15 |
| 40 | 313.15 |
| 100 | 373.15 |
| 180 | 453.15 |
| 200 | 473.15 |
1 degree Celsius = 274.15 K.
20 °C = 293.15 K.
100 °C = 373.15 K.
Use the formula K = °C + 273.15. Or type any value into the converter above — it works in both directions.