As we know One °Re is equal to 1.25 °C (1 °Re = 1.25 °C).

To convert Degree Reaumur to Degree Celsius, multiply your °Re figure by 1.25.

Example : convert 25 °Re to °C:

25 °Re = 25 × 1.25 °C = °C

To convert Degree Celsius to Degree Reaumur, divide your °C figure by 1.25.

Example : convert 25 °C to °Re:

25 °C = 25 ÷ 1.25 °Re = °Re