— Degree Celsius
The degree Celsius symbol (°C) marks temperatures on the Celsius scale, where water freezes at 0 °C and boils at 100 °C. A one-degree change in Celsius equals a one-kelvin change — only the zero point differs.
SI unit: °C; T(K) = T(°C) + 273.15
Used in
- Everyday temperature readings
- Calorimetry: ΔT in °C equals ΔT in K