How to convert Kelvin to Celsius
Subtract the offset to get Celsius: °C = K − 273.15.
Examples
- 20 K = -253.15 °C
- 100 K = -173.15 °C
Kelvin to Celsius conversion table
| Kelvin (K) | Celsius (°C) |
|---|---|
| -40 | -313.15 |
| -20 | -293.15 |
| 0 | -273.15 |
| 10 | -263.15 |
| 20 | -253.15 |
| 30 | -243.15 |
| 37 | -236.15 |
| 50 | -223.15 |
| 68 | -205.15 |
| 98.6 | -174.55 |
| 100 | -173.15 |
| 212 | -61.15 |
Frequently asked questions
- How do I convert Celsius back to Kelvin?
- Use the Celsius to Kelvin 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.