Degrees Celsius to Kelvin
Convert degrees Celsius to kelvin instantly. See the exact formula, a worked example and a quick reference chart — free, no sign-up.
To convert degrees Celsius to kelvin, use K = °C + 273.15. For example, 100°C = 373.15K. Enter any value in the converter above to do it instantly.
Why convert degrees Celsius to kelvin?
Degrees Celsius (°C) and kelvin (K) are two different temperature scales, so converting between them needs a formula rather than a single multiplier. The tool above does it instantly; below is the exact formula, a worked example and a reference chart you can scan.
Degrees Celsius to kelvin formula
K = °C + 273.15
Worked example: 100 degrees Celsius = 373.15 kelvin.
Degrees Celsius to kelvin conversion table
| Degrees Celsius (°C) | Kelvin (K) |
|---|---|
| -40 | 233.15 |
| 0 | 273.15 |
| 10 | 283.15 |
| 20 | 293.15 |
| 25 | 298.15 |
| 30 | 303.15 |
| 37 | 310.15 |
| 100 | 373.15 |
Degrees Celsius to Kelvin — frequently asked questions
What is the formula to convert degrees Celsius to kelvin?
Use K = °C + 273.15. For example, 100°C = 373.15K.
What is 100°C in K?
100°C = 373.15K. Enter any value in the converter above for an instant result.
How do I convert kelvin back to degrees Celsius?
Do the reverse conversion — see our kelvin-to-degrees Celsius converter for the formula and an instant calculator.
Is this degrees Celsius-to-kelvin converter free?
Yes — it's completely free, instant and runs in your browser with no sign-up. Nothing you type is uploaded.