Back Celsius Afrikaans Grad Celsius ALS Grau Celsius AN درجة حرارة مئوية Arabic درجة سيلسيوس ARY Grau Celsius AST Selsi şkalası Azerbaijani سلسیوس AZB Celsius BAN Celsius BCL
Celsius (more precisely, a degree Celsius), sometimes called centigrade, is a unit of measurement that is used in most countries to measure temperature. The unit was created by Anders Celsius (1701–1744), a Swedish astronomer.
0 °C is the melting point of pure water at sea level (normal atmospheric pressure), and 100 °C is the boiling point of water at sea level. (Water boils at a lower temperature at higher altitudes.)
1 °C is therefore a hundredth of that difference.
Since 1948, the unit has been called "Celsius." "Centigrade" was the name of the unit before the change, with "centi" meaning a hundredtand "grade" being a scale.
The other main measurement of temperature is the Fahrenheit scale, but it is less used. The Celsius scale, based on multiples of ten, is used with SI, or metric, measurements.