Reaumur to Celsius Converter

Reaumur

The Réaumur scale (symbol: °Re or °r), also known as the 'octogesimal division', is a temperature scale for which the melting and boiling points of water are defined as 0 and 80 degrees respectively. The scale is named for René Antoine Ferchault de Réaumur, who first proposed a similar scale in 1730.

Celsius

The degree Celsius (symbol: °C) is a unit of temperature on the Celsius scale. Originally this scale was known as the centigrade scale. Even now many people refer degree Celsius as centigrade. The Celsius scale is named after Swedish astronomer Anders Celsius. He developed a similar temperature scale in 1742. Celsius is most widely used temperature scale in the world.

On this Celsius scale, 0 °C temperature represents the freezing point of water and 100 °C represents the boiling point of water at 1 atm pressure.

Key Temperature Scale Relations

• Absolute zero Temperature
• Kelvin: 0 K
• Celsius: −273.15 °C
• Fahrenheit: −459.67 °F
• Rankine: 0 °R
• Boiling point of liquid nitrogen
• Kelvin: 77.4 K
• Celsius: −195.8 °C
• Fahrenheit: −320.4 °F
• Rankine: 139.3 °R
• Sublimation point of dry ice
• Kelvin: 195.1 K
• Celsius: −78 °C
• Fahrenheit: −108.4 °F
• Rankine: 351.2 °R
• Intersection of Celsius and Fahrenheit scales
• Kelvin: 233.15 K
• Celsius: −40 °C
• Fahrenheit: −40 °F
• Rankine: 419.67 °R
• Melting point of H₂O (purified ice)
• Kelvin: 273.1499 K
• Celsius: −0.0001 °C
• Fahrenheit: 31.9998 °F
• Rankine: 491.6698 °R
• Room temperature (NIST standard)
• Kelvin: 293.15 K
• Celsius: 20.0 °C
• Fahrenheit: 68.0 °F
• Rankine: 527.69 °R
• Normal human body temperature (average)
• Kelvin: 310.15 K
• Celsius: 37.0 °C
• Fahrenheit: 98.6 °F
• Rankine: 558.27 °R
• Water's boiling point at 1 atm (101.325 kPa)
• Kelvin: 373.1339 K
• Celsius: 99.9839 °C
• Fahrenheit: 211.971 °F
• Rankine: 671.6410 °R

Reaumur To Celsius Table