Convert watt-hour to joule
Enter a value below to convert watt-hour [W*h] to joule [J]. Reverse conversion: Convert joule to watt-hour.
1 W*h = 3600 J. To convert watt-hour to joule, multiply the value by 3600; to go the other way, divide by it (1 J = 0.000277777777778 W*h). Both units measure energy and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Watt-Hour to Joule: Quick Reference
- 1 W*h = 3600 J
- 1 J = 0.000277777777778 W*h
- 10 W*h = 36000 J
- 100 W*h = 360000 J
How to Convert Watt-Hour to Joule
1 W*h = 3600 J
Example: convert 15 W*h to J:
15 W*h = 15 × 3600 J = 54000 J
Watt-Hour to Joule Conversion Table
| watt-hour | joule |
|---|---|
| 1 W*h | 3600 J |
| 2 W*h | 7200 J |
| 3 W*h | 10800 J |
| 5 W*h | 18000 J |
| 10 W*h | 36000 J |
| 20 W*h | 72000 J |
| 50 W*h | 180000 J |
| 100 W*h | 360000 J |
| 500 W*h | 1800000 J |
| 1000 W*h | 3600000 J |
Watt-Hour: Definition and Use
A watt-hour (W·h) is a unit of energy equal to the amount of energy transferred or used when one watt of power is sustained for one hour.
History/Origin
The watt-hour was established as a practical unit of energy measurement with the adoption of the International System of Units (SI) and has been used in electrical and energy industries to quantify energy consumption and storage since the 20th century.
Current Use
Watt-hours are commonly used to measure electrical energy consumption in household appliances, batteries, and energy storage systems, providing a convenient unit for billing, capacity ratings, and energy management.
Joule: Definition and Use
The joule (J) is the SI unit of energy, work, and heat, defined as the work done when a force of one newton acts over a distance of one meter.
History/Origin
The joule was named after James Prescott Joule in 1889 to honor his work in energy and thermodynamics. It was adopted as the SI unit of energy in 1948.
Current Use
The joule is widely used in physics, engineering, and everyday contexts to quantify energy, work, and heat in various applications, including electricity, mechanics, and thermodynamics.
Watt-Hour to Joule: Frequently Asked Questions
What is 1 watt-hour in joule?
1 watt-hour (W*h) = 3600 joule (J).
How do you convert watt-hour to joule?
Multiply the watt-hour value by 3600. For example, 25 W*h × 3600 = 90000 J.
What is 10 watt-hour in joule?
10 W*h = 36000 J.
Which unit is larger, the watt-hour or the joule?
The watt-hour is the larger unit: 1 W*h = 3600 J.