Convert watt hour to joule
Enter the value to convert from watt hour to joule.
How to Convert Watt hour to Joule
Converting watt hour to joule is straightforward using our conversion calculator.
Conversion Formula
J = Wh × 3600Reverse conversion: Convert joule to watt hour
Comparison: Watt-hour vs Joule
When to Use Each Unit
Watt-hour: Used for small device energy consumption, battery ratings, and low-power electrical measurements.
Joule: Universal scientific unit for all forms of energy: mechanical, electrical, thermal, chemical, and nuclear energy worldwide.
Common Conversion Values
- 1000 Wh = 1 kWh
- 1 Wh = 3,600 J
- 1 Wh = 3.6 kJ
- 1 Wh ≈ 860 cal
About Watt
Definition: The watt hour (symbol: Wh) is the energy consumed by using one watt of power for one hour.
History: Smaller electrical energy unit for measuring low-power device consumption and battery capacity.
Current Use: Used for small device energy consumption, battery ratings, and low-power electrical measurements.
Examples: Smartphone battery: 15 Wh, laptop battery: 50-100 Wh, tablet: 25-40 Wh, LED bulb hour: 10 Wh
About Joule
Definition: The joule (symbol: J) is the SI unit of energy, equal to the energy expended when applying one newton of force through one meter of distance.
History: Named after English physicist James Prescott Joule in 1889. Established the mechanical equivalent of heat and energy conservation.
Current Use: Universal scientific unit for all forms of energy: mechanical, electrical, thermal, chemical, and nuclear energy worldwide.
Examples: Apple: 350,000 J, car battery: 4.3 MJ, lightning bolt: 1-5 billion J, human daily intake: 8-10 MJ