Radian per Day to Revolution per Hour Conversion

Convert between Radian per Day and Revolution per Hour quickly and accurately.

From Radian per Day

rad/d

To Revolution per Hour

r/h

How to Convert Radian per Day to Revolution per Hour

Conversion Formula

1 rad/d = 0.007 r/h

1 r/h = 150.796 rad/d

Example

Convert 15 rad/d to r/h:

15 rad/d = 15 × 0.007 r/h = 0.099 r/h

Unit Information

Learn about the velocity - angular units you're converting between

Radian per Day

rad/d

Definition

The radian per day is a unit of angular velocity representing the rate of angular displacement over a 24-hour period. It is commonly used for very slow rotational motions such as astronomical phenomena, geological processes, and long-term mechanical systems.

History/Origin

Radian per day was developed for measuring extremely slow angular velocities in astronomical observations and geological studies. It provides a practical unit for describing the Earth's rotation, planetary movements, and other celestial phenomena that occur over extended time periods.

Current Use

Radian per day is primarily used in astronomy for describing planetary rotation rates, in geology for measuring tectonic plate movements, and in environmental monitoring for tracking slow changes in natural systems over extended periods.

Multiplier

Offset

Revolution per Hour

r/h

Definition

The revolution per hour is a unit of angular velocity representing the number of complete rotations over a one-hour period. It is used for measuring moderate-speed rotational motions in mechanical systems and industrial applications.

History/Origin

Revolution per hour was established as an intermediate unit between revolution per second and revolution per day for measuring angular velocities in mechanical and industrial applications. It provides a convenient scale for describing rotational speeds in various engineering contexts.

Current Use

Revolution per hour is used in mechanical engineering for describing slow motor speeds, in industrial automation for describing equipment performance, and in manufacturing for monitoring rotational equipment performance over hourly intervals.

Multiplier

0.002

Offset