How to convert Celsius to Kelvin
Kelvin uses the same degree size as Celsius, just shifted so 0 K is absolute zero: K = °C + 273.15.
Examples
- 20 °C = 293.15 K
- 100 °C = 373.15 K
Celsius to Kelvin conversion table
| Celsius (°C) | Kelvin (K) |
|---|---|
| -40 | 233.15 |
| -20 | 253.15 |
| 0 | 273.15 |
| 10 | 283.15 |
| 20 | 293.15 |
| 30 | 303.15 |
| 37 | 310.15 |
| 50 | 323.15 |
| 68 | 341.15 |
| 98.6 | 371.75 |
| 100 | 373.15 |
| 212 | 485.15 |
Frequently asked questions
- How do I convert Kelvin back to Celsius?
- Use the Kelvin to Celsius converter, or just swap the units on the full unit converter — it shows every unit in the category at once.
- Are these conversion factors exact?
- Yes. The English units have been defined in metric terms since 1959, so the factors used here are exact by definition, not rounded approximations. Displayed results are rounded only for readability.
- Can I convert other units too?
- The unit converter also handles length, weight, volume, temperature, area, speed, pressure, energy, power, torque, and fuel economy — each with every unit shown side by side.