Degrees Celsius to Kelvin Converter
Convert degrees Celsius to kelvin instantly with the exact formula: K = °C + 273.15. Type a temperature above and the result updates while you type.
Result
K
Result updates as you type. Values are calculated locally in your browser — nothing is sent to a server.
The formula
K = °C + 273.15
Degrees Celsius to kelvin conversion table
| °C | K |
|---|---|
| -40 | 233.15 |
| -30 | 243.15 |
| -20 | 253.15 |
| -10 | 263.15 |
| 0 | 273.15 |
| 5 | 278.15 |
| 10 | 283.15 |
| 15 | 288.15 |
| 20 | 293.15 |
| 25 | 298.15 |
| 30 | 303.15 |
| 37 | 310.15 |
| 40 | 313.15 |
| 50 | 323.15 |
| 75 | 348.15 |
| 100 | 373.15 |
Worked examples
- 10 °C = 283.15 K
- 25 °C = 298.15 K
- 37 °C = 310.15 K
Conversion factors follow the exact international definitions (SI/BIPM; imperial units per the 1959 International Yard and Pound Agreement, maintained by NIST). NIST unit conversion reference
Factors last verified August 2026 · Built by Jeffrey Tepper.
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Frequently asked questions
How many kelvin are in 1 degree Celsius?
1 degree Celsius equals 274.15 kelvin (°C → K).
How do you convert degrees Celsius to kelvin?
Use the formula K = °C + 273.15. For example: 25 °C equals 298.15 K.
What is 37 °C in K?
37 °C equals 310.15 K.