# hour To day Converter

(r/h to r/d converter)

## Convert Revolution/Hour to Revolution/Day

 From: rev/h To: rev/d

## Seamlessly Convert Rotational Speed from Hours to Days

(Last Updated On: 2024-05-13)

Discover the ease of converting revolutions per hour to revolutions per day with our precise r/h to r/d tool. Curated by Newtum, this converter simplifies your rotational calculations.

### What are hour and day

Definition of hour

An hour is a unit of time conventionally reckoned as 1/24 of a day and scientifically reckoned as 3,599–3,601 seconds, depending on conditions. The hour was initially established in the ancient Near East as 1/12 of the night or daytime. Such hours varied by season, latitude, and weather. It was subsequently divided into 60 minutes, each of 60 seconds. Today, a typical hour is equivalent to 60 minutes or 3,600 seconds and is used across various fields globally.

Definition of day

A day is a unit of time. In common usage, it is either an interval equal to 24 hours or daytime, the consecutive period of time during which the Sun is above the horizon. The period of time during which the Earth completes one rotation with respect to the Sun is called a solar day. Several definitions of this universal human concept are used according to context, need and convenience. In 1960, the second was redefined in terms of the orbital motion of the Earth, and was designated the SI base unit of time.

### hour to day Conversion Table

Revolutions per hour (r/h) Revolutions per day (r/d)
1 r/h 24 r/d
2 r/h 48 r/d
3 r/h 72 r/d
4 r/h 96 r/d
5 r/h 120 r/d
6 r/h 144 r/d
7 r/h 168 r/d
8 r/h 192 r/d
9 r/h 216 r/d
10 r/h 240 r/d

#### Conversion of hour to day

1 r/h = 24 r/d
1 r/d = 1/24 r/h

Example 1:
Convert 5 r/h to r/d:
5 r/h = 5 Ã— 24 r/d = 120 r/d

Example 2:
Convert 3 r/h to r/d:
3 r/h = 3 Ã— 24 r/d = 72 r/d

### History of hour and day

The concept of measuring rotational speed from hours to days stems from the need to understand and quantify rotational periods over the course of a day. It's particularly useful in mechanical and engineering fields where machinery and components operate on rotations. The converter traces back to such industrial applications, simplifying the calculation of long-term rotational cycles from a per-hour basis to per-day metrics.

### How to use hour to day Converter

• Enter the value in revolutions per hour (r/h) into the converter.
• Click the 'Convert' button to initiate the conversion.
• The result in revolutions per day (r/d) will be displayed automatically.
• Use the converted value as needed for your calculations or records.

### Real Life Applications of hour to day

Explore the real-world applications of converting revolutions per hour to revolutions per day and how it facilitates precise mechanical calculations.

• Manufacturing: Monitoring and controlling the rotational speed of machinery over a full day's cycle.
• Astronomy: Tracking the rotational period of celestial bodies in terms of earth days.
• Engineering: Designing systems that require synchronization with daily rotational speeds, such as wind turbines.

### Solved Examples r/h to r/d

Example 1: To convert 12 r/h to r/d, simply multiply by 24, resulting in 288 r/d.

Example 2: Converting 20 r/h to r/d gives you 20 Ã— 24, which equals 480 r/d.