Celsius to Réaumur (°C → °Ré)
Formula
°C → kelvin → °RéConversion Table
| °C | °Ré |
|---|---|
| 0 | 0 |
| 1.0000 | 0.80000 |
| 2.0000 | 1.6000 |
| 3.0000 | 2.4000 |
| 4.0000 | 3.2000 |
| 5.0000 | 4.0000 |
| 6.0000 | 4.8000 |
| 7.0000 | 5.6000 |
| 8.0000 | 6.4000 |
| 9.0000 | 7.2000 |
| 10.000 | 8.0000 |
| 11.000 | 8.8000 |
| 12.000 | 9.6000 |
| 13.000 | 10.400 |
| 14.000 | 11.200 |
| 15.000 | 12.000 |
| 16.000 | 12.800 |
| 17.000 | 13.600 |
| 18.000 | 14.400 |
| 19.000 | 15.200 |
| °C | °Ré |
|---|---|
| 20.000 | 16.000 |
| 21.000 | 16.800 |
| 22.000 | 17.600 |
| 23.000 | 18.400 |
| 24.000 | 19.200 |
| 25.000 | 20.000 |
| 26.000 | 20.800 |
| 27.000 | 21.600 |
| 28.000 | 22.400 |
| 29.000 | 23.200 |
| 30.000 | 24.000 |
| 31.000 | 24.800 |
| 32.000 | 25.600 |
| 33.000 | 26.400 |
| 34.000 | 27.200 |
| 35.000 | 28.000 |
| 36.000 | 28.800 |
| 37.000 | 29.600 |
| 38.000 | 30.400 |
| 39.000 | 31.200 |
| °C | °Ré |
|---|---|
| 40.000 | 32.000 |
| 41.000 | 32.800 |
| 42.000 | 33.600 |
| 43.000 | 34.400 |
| 44.000 | 35.200 |
| 45.000 | 36.000 |
| 46.000 | 36.800 |
| 47.000 | 37.600 |
| 48.000 | 38.400 |
| 49.000 | 39.200 |
| 50.000 | 40.000 |
| 51.000 | 40.800 |
| 52.000 | 41.600 |
| 53.000 | 42.400 |
| 54.000 | 43.200 |
| 55.000 | 44.000 |
| 56.000 | 44.800 |
| 57.000 | 45.600 |
| 58.000 | 46.400 |
| 59.000 | 47.200 |
| °C | °Ré |
|---|---|
| 60.000 | 48.000 |
| 61.000 | 48.800 |
| 62.000 | 49.600 |
| 63.000 | 50.400 |
| 64.000 | 51.200 |
| 65.000 | 52.000 |
| 66.000 | 52.800 |
| 67.000 | 53.600 |
| 68.000 | 54.400 |
| 69.000 | 55.200 |
| 70.000 | 56.000 |
| 71.000 | 56.800 |
| 72.000 | 57.600 |
| 73.000 | 58.400 |
| 74.000 | 59.200 |
| 75.000 | 60.000 |
| 76.000 | 60.800 |
| 77.000 | 61.600 |
| 78.000 | 62.400 |
| 79.000 | 63.200 |
Celsius to Réaumur Conversion
Converting Celsius (°C) to Réaumur (°Ré) is a common temperature conversion. 1 °C equals 0.8 °Ré. For example, 100 °C is equal to 80 °Ré.
Quick Mental Math: Celsius to Réaumur
Divide by 1.25 to convert celsius to reaumur.
Why is converting Celsius to Réaumur tricky?
The conversion factor requires careful attention to avoid reversing the operation.
Reference Temperatures
Absolute zero: -273.15 °C = -218.52 °Ré. Water freezing point: 0 °C = 0 °Ré. Room temperature: 20 °C = 16 °Ré. Body temperature: 37 °C = 29.6 °Ré. Water boiling point: 100 °C = 80 °Ré.
What is Celsius?
Celsius (°C) is a unit of temperature. Celsius is a temperature scale where 0 °C is the freezing point and 100 °C is the boiling point of water at standard atmospheric pressure. It is defined by the International System of Units (SI) and related to the Kelvin scale by the formula °C = K − 273.15 [cgpm-resolutions]. The Celsius scale was developed by Anders Celsius in 1742. It became internationally accepted and officially incorporated into the SI temperature scales by the CGPM in 1948 for scientific and everyday temperature measurement [cgpm-resolutions]. Celsius is the standard temperature unit for most countries worldwide, including Canada, Europe, and Australia. It is used in weather forecasts, scientific research, and industrial processes as endorsed by ISO and BIPM [bipm-si-brochure].
What is Réaumur?
Réaumur (°Ré) is a unit of temperature. The Réaumur scale is a temperature scale where water freezes at 0 °Ré and boils at 80 °Ré at standard atmospheric pressure. Each degree Réaumur corresponds to 1.25 degrees Celsius. The scale was historically used in Europe but is now mostly obsolete and replaced by Celsius and Kelvin [cgpm-resolutions]. René Antoine Ferchault de Réaumur introduced the scale in 1730 to simplify temperature measurement using alcohol thermometers. It was widely used in France and parts of Europe until the 19th century before being supplanted by the Celsius scale [cgpm-resolutions]. Today, the Réaumur scale has limited use and appears mainly in historical or academic contexts. Some traditional cheese-making regions in Europe may still reference it. Modern science and industry prefer Celsius or Kelvin in line with SI standards [cgpm-resolutions].
Common Misspellings
People often search for this conversion using these alternate spellings: celcius, celsious, celcius, celsius degree, reaumer, reaumur, reaumur scale, réamer. All of these refer to the Celsius to Réaumur conversion.