Kelvin to Celsius Converter
273.15 K = 0 °C (water freezing point). Absolute zero = 0 K = −273.15 °C. Body temp = 310.15 K.
Inverse conversion
0 °C = 273.15 K. Absolute zero is 0 K = −273.15 °C. Water boils at 100 °C = 373.15 K at sea level.
Formula
Formula
°C = K − 273.15
Worked example
Body temperature is 310.15 K. To convert: 310.15 − 273.15 = 37.0°C.
Quick reference table
| K | °C |
|---|---|
| 0 | -273.15 |
| 73.15 | -200 |
| 173.15 | -100 |
| 273.15 | 0 |
| 293.15 | 20 |
| 310.15 | 37 |
| 373.15 | 100 |
| 1273.15 | 1000 |
Unit definitions
Kelvin (K)
Kelvin (K) is the SI absolute temperature unit. 0 K is absolute zero. No degree symbol is used with Kelvin.
Celsius (°C)
Celsius (°C) sets 0°C at the freezing point of water and 100°C at its boiling point at standard pressure.
Common use cases
- Converting experimental data from absolute to everyday temperature scale
- Material science: converting processing temperatures
- Astronomy: converting stellar temperatures to Celsius
- Chemistry lab results