Radian per Hour to Revolution per Day Conversion

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

From Radian per Hour

rad/h

To Revolution per Day

r/d

How to Convert Radian per Hour to Revolution per Day

Conversion Formula

1 rad/h = 3.82 r/d

1 r/d = 0.262 rad/h

Example

Convert 15 rad/h to r/d:

15 rad/h = 15 × 3.82 r/d = 57.296 r/d

Unit Information

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

Radian per Hour

rad/h

Definition

The radian per hour is a unit of angular velocity representing the rate of angular displacement over a one-hour period. It is used for measuring moderate-speed rotational motions in mechanical systems, astronomical observations, and industrial applications.

History/Origin

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

Current Use

Radian per hour is used in mechanical engineering for describing slow motor speeds, in astronomy for tracking celestial object movements, and in industrial applications for monitoring rotational equipment performance over hourly intervals.

Multiplier

Offset

Revolution per Day

r/d

Definition

The revolution per day is a unit of angular velocity representing the number of complete rotations over a 24-hour period. It is commonly used for measuring very slow rotational motions in astronomical, geological, and mechanical applications.

History/Origin

Revolution per day was developed for measuring extremely slow rotational 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

Revolution 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