°Cv2rev 12026-03-17ISO 80000-5:2019; 5-2
degree Celsius
0112/2///62720#UAA033
unit of the temperature of which the scale is defined by two fixe-points, the temperatures of freezing point (0 °C) and boiling point (100 °C) of water at normal pressure (air pressure of 1 013,25 hPa). The unit degree Celsius is by definition equal in magnitude to the kelvin.
unitAll properties21#
- Version
- 2
- Revision
- 1
- Preferred name
- degree Celsius
- Short name
- °C
- Definition
- unit of the temperature of which the scale is defined by two fixe-points, the temperatures of freezing point (0 °C) and boiling point (100 °C) of water at normal pressure (air pressure of 1 013,25 hPa). The unit degree Celsius is by definition equal in magnitude to the kelvin.
- Definition source
- ISO 80000-5:2019; 5-2
- Note
- For the numerical value of a Celsius temperature and the accordant thermodynamic temperature the following relation is valid: - for absolute temerature: {δ}Grad Celsius = {T}Kelvin - 273,15 - for temperature difference: {Δδ}Grad Celsius = {ΔT}Kelvin
- Unit structure
- K¹
- Unit in text
- degree Celsius
- Unit in SGML/XML
Structured markup (math)(158 chars)
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> <!-- UAA033 --> <mrow> <mrow> <mi mathvariant="normal">℃</mi> </mrow> </mrow> </math>
- UN/ECE code
- CEL
- Unit conversion
Structured markup (UnitsML)(564 chars)
<UnitsML xmlns="https://schema.unitsml.org/unitsml/1.0"><Unit xml:id="0112/2///62720#UAA185"><Conversions><Float64ConversionFrom xml:id="UAA185_from_UAA033" initialUnit="0112/2///62720#UAA033" multiplicand="1" divisor="1" finalAddend="273.15" exact="true" finaladdend="273.15" /></Conversions></Unit><Unit xml:id="https://si-digital-framework.org/SI/units/kelvin"><Conversions><Float64ConversionFrom xml:id="SI::kelvin_from_UAA033" initialUnit="0112/2///62720#UAA033" multiplicand="1" divisor="1" finalAddend="273.15" exact="true" /></Conversions></Unit></UnitsML>
- Responsible committee
- IEC/SC 3D
- Publisher
- IEC
- Published in
- IEC 62720
- Status level
- Standard
- Version release date
- 2026-03-17
- Revision release date
- 2026-03-17
- Version initiation date
- 2026-03-17
- Change request ID
- C00192