Definition: The degree celcius is a unit for temperature.

Source: SI Brochure 9th Ed. 2019, p 138

Status: Valid

Notes

The degree Celsius is the SI coherent derived unit for Celsius temperature.

The numerical value of a temperature difference or temperature interval is the same when expressed in either degrees Celsius or in kelvin.

The numerical value of a Celsius temperature t expressed in degrees Celsius is related to the numerical value of the thermodynamic temperature T expressed in kelvin by the relation
$$t/^{\circ}{\rm{C}} = T/K - 273.15$$