Convert degrees Celsius to kelvins instantly. 25 °C = 298.15 K.
1 °C = 274.15 K
To convert degrees Celsius to kelvins, use the formula K = °C + 273.15. Temperature scales do not share a zero point, so the conversion uses this exact formula rather than a single multiplier. For example, 25 °C equals 298.15 K.
| Celsius (°C) | Kelvin (K) |
|---|---|
| -40 °C | 233.15 K |
| -30 °C | 243.15 K |
| -20 °C | 253.15 K |
| -10 °C | 263.15 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 |
| 200 °C | 473.15 K |
The celsius (°C) and the kelvin (K) are both units of temperature. This page gives you an instant, exact conversion between them, a reference table for the most common values, and the underlying formula so you can check the maths yourself. All calculations run in your browser — nothing you type is sent anywhere.
Need to go the other way? Use the Kelvin to Celsius converter. For all units at once, try the full Temperature Converter.
Use the formula K = °C + 273.15. For example, 25 °C equals 298.15 K. Just enter your value in the converter above to get an instant result.
1 °C = 274.15 K. You can multiply any number of degrees Celsius by this figure to convert it, or use the calculator above for exact results.
Use the reverse conversion: 1 K = -272.15 °C. Our Kelvin to Celsius converter does this for you.