As we know One °R is equal to 0.5555555556 K (1 °R = 0.5555555556 K).

To convert Degree Rankine to Kelvin, multiply your °R figure by 0.5555555556.

Example : convert 25 °R to K:

25 °R = 25 × 0.5555555556 K = K

To convert Kelvin to Degree Rankine, divide your K figure by 0.5555555556.

Example : convert 25 K to °R:

25 K = 25 ÷ 0.5555555556 °R = °R