As we know One K is equal to 0.8 °Re (1 K = 0.8 °Re).

To convert Kelvin to Degree Reaumur, multiply your K figure by 0.8.

Example : convert 25 K to °Re:

25 K = 25 × 0.8 °Re = °Re

To convert Degree Reaumur to Kelvin, divide your °Re figure by 0.8.

Example : convert 25 °Re to K:

25 °Re = 25 ÷ 0.8 K = K