As we know One r/h is equal to 0.0017453293 rad/s (1 r/h = 0.0017453293 rad/s).

To convert Revolution/hour to Radian/second, multiply your r/h figure by 0.0017453293.

Example : convert 25 r/h to rad/s:

25 r/h = 25 × 0.0017453293 rad/s = rad/s

To convert Radian/second to Revolution/hour, divide your rad/s figure by 0.0017453293.

Example : convert 25 rad/s to r/h:

25 rad/s = 25 ÷ 0.0017453293 r/h = r/h