As we know One K is equal to 1.8 °R (1 K = 1.8 °R).

To convert Kelvin to Degree Rankine, multiply your K figure by 1.8.

Example : convert 25 K to °R:

25 K = 25 × 1.8 °R = °R

To convert Degree Rankine to Kelvin, divide your °R figure by 1.8.

Example : convert 25 °R to K:

25 °R = 25 ÷ 1.8 K = K