Réaumur to Celsius Conversion

The Réaumur scale, while less common today, offers a fascinating glimpse into the history of temperature measurement. This guide will help you understand the Réaumur scale and how to easily convert between Réaumur and Celsius.

What is the Réaumur Scale?

Developed by French scientist René Antoine Ferchault de Réaumur in 1730, the Réaumur scale is a temperature scale where the freezing point of water is defined as 0°R and the boiling point of water is 80°R.

Understanding the Celsius Scale

The Celsius scale, also known as the centigrade scale, is the most widely used temperature scale globally. It defines the freezing point of water as 0°C and the boiling point as 100°C.

Converting Réaumur to Celsius

The conversion from Réaumur to Celsius is straightforward:

Formula:

**Celsius (°C) = Réaumur (°R) * (5/4)**

Easy Conversion with Our Calculator

To simplify the process, we've created a convenient online calculator:

Raumur to Celsius Conversion Calculator

Simply input the temperature in Raumur degrees (°R) into the calculator, and it will instantly display the equivalent temperature in Celsius degrees (°C).

Example

Let's convert 20°R to Celsius:

  1. Input:** Enter "20" into the calculator.
  2. Calculate:** Click the "Calculate" button.
  3. Result:** The calculator will display the Celsius equivalent.

By using this guide and our convenient calculator, you can easily convert between Réaumur and Celsius with confidence.

Réaumur Celsius Réaumur Celsius Réaumur Celsius Réaumur Celsius
1ºRé1.25°C21ºRé26.25°C41ºRé51.25°C61ºRé76.25°C
2ºRé2.50°C22ºRé27.50°C42ºRé52.50°C62ºRé77.50°C
3ºRé3.75°C23ºRé28.75°C43ºRé53.75°C63ºRé78.75°C
4Ré5.00°C24ºRé30.00°C44ºRé55.00°C64ºRé80.00°C
5ºRé6.25°C25ºRé31.25°C45ºRé56.25°C65ºRé81.25°C
6ºRé7.50°C26ºRé32.50°C46ºRé57.50°C66ºRé82.50°C
7ºRé8.75°C27ºR33.75°C47ºRé58.75°C67ºRé83.75°C
8ºRé10.00°C28ºRé35.00°C48ºRé60.00°C68ºRé85.00°C
9ºRé11.25°C29ºRé36.25°C49ºRé61.25°C69ºRé86.25°C
10ºRé12.50°C30ºRé37.50°C50ºRé62.50°C70ºRé87.50°C
11ºRé13.75°C31ºRé38.75°C51ºRé63.75°C71ºRé88.75°C
12ºRé15.00°C32ºRé40.00°C52ºRé65.00°C72ºRé90.00°C
13ºRé16.25°C33ºRé41.25°C53ºRé66.25°C73ºRé91.25°C
14ºRé17.50°C34ºRé42.50°C54ºRé67.50°C74Ré92.50°C
15ºRé18.75°C35ºRé43.75°C55ºRé68.75°C75ºR93.75°C
16ºRé20.00°C36Ré45.00°C56ºRé70.00C76ºRé95.00°C
17ºRé21.25°C37ºR46.25°C57ºRé71.25°C77ºRé96.25°C
18ºRé22.50C38ºRé47.50°C58ºRé72.50°C78ºRé97.50°C
19ºRé23.75°C39ºRé48.75°C59ºRé73.75°C79ºRé98.75°C
20ºRé25.00°C40ºRé50.00°C60ºRé75.00°C80ºRé100.00°C