Convert Watt-hour (Wh) to Joule (J)
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Updated on September 1, 2025
You can use our Watt-hour (Wh) to Joule (J) conversion calculator as a reliable and efficient tool to simplify energy conversions. It is designed for professionals, students, and anyone who needs a quick and accurate result. Conversion of Watt-hour (Wh) to Joule (J) is crucial in Electricity, Power Measurement related measurements. You can avoid the risk of manual calculation errors and save valuable time using our Watt-hour (Wh) to Joule (J) converter.About Watt-hour (Wh) to Joule (J) Conversion Calculator
Written By
Nadiba Rahman
Reviewed by
Mrinmoy Roy
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Relation Between Watt-hour (Wh) and Joule (J)
Let me explain to you about the relation between Watt-hour Wh and Joule (J) first before moving to the conversion process. Because it’s essential to grasp what these units represent.What is Watt-hour (Wh)?
A watt-hour is a unit of energy equal to the energy produced by a power of one watt operating for one hour. Watt-hour (Wh) is a unit of energy measurement which is commonly used in Electricity, Power Measurement. Watt-hours are commonly used to measure the energy consumption of household appliances and electronic devices..What is Joule (J)?
Watt-hour (Wh) is another unit of energy measurement that is used in Physics, Energy. The joule is the SI unit of energy, defined as the amount of work done when a force of one newton is applied over a distance of one meter. 2 . Watt-hours are commonly used to measure the energy consumption of household appliances and electronic devices..How to Convert Joule (J)?
The conversion between Watt-hour (Wh) and Joule (J) follows a simple formula:Watt-hour = Watt-hour × 3600
Where, 3600 is the value that allows you to convert between Watt-hour (Wh) and Joule (J).
So,
1 Joule = 3600 Watt-hour
And, 1 Watt-hour = 1/3600 Joule

Examples of Converting Watt-hour (Wh) to Joule (J)
To convert any value from Watt-hour (Wh) to Joule (J), simply multiply the amount of Watt-hour (Wh) by the conversion factor:1 Joule = 3600 Watt-hour
For example, if you want to convert 5 Watt-hour into Joule and the conversion factor is 3600, then:
5 Watt-hour = 5 x 3600 Joule
Watt-hour (Wh) to Joule (J) Conversion Chart
Here’s a quick reference chart for common conversions between Watt-hour (Wh) and Joule (J)| Watt-hour (Wh) | Joule (J) |
|---|---|
| 10 Watt-hour (Wh) | 36000 Joule (J) |
| 20 Watt-hour (Wh) | 72000 Joule (J) |
| 30 Watt-hour (Wh) | 108000 Joule (J) |
| 40 Watt-hour (Wh) | 144000 Joule (J) |
| 50 Watt-hour (Wh) | 180000 Joule (J) |
| 60 Watt-hour (Wh) | 216000 Joule (J) |
| 70 Watt-hour (Wh) | 252000 Joule (J) |
| 80 Watt-hour (Wh) | 288000 Joule (J) |
| 90 Watt-hour (Wh) | 324000 Joule (J) |
| 100 Watt-hour (Wh) | 360000 Joule (J) |
How 1 Watt-hour (Wh) Converts to Other energy Units
See the relation between Watt-hour (Wh) and other energy related measurement units:| 1 Watt-hour(Wh) | 3.412140 British Thermal Unit (BTU) |
| 1 Watt-hour(Wh) | 860.421000 Calorie (cal) |
| 1 Watt-hour(Wh) | 36000000000.000000 Erg (erg) |
| 1 Watt-hour(Wh) | 2.24774e+22 Electronvolt (ev) |
| 1 Watt-hour(Wh) | 0.000000 Exajoule (EJ) |
| 1 Watt-hour(Wh) | 2655.220000 Foot-pound (ft lbs) |
| 1 Watt-hour(Wh) | 0.000004 Gigajoule (GJ) |
| 1 Watt-hour(Wh) | 0.000000 Gigawatt-hour (GWh) |
| 1 Watt-hour(Wh) | 0.860421 Kilocalorie (KCal) |
| 1 Watt-hour(Wh) | 3.600000 Kilojoule (KJ) |
| 1 Watt-hour(Wh) | 0.003600 Megajoule (MJ) |
| 1 Watt-hour(Wh) | 0.001000 Megawatt-hour (MWh) |
| 1 Watt-hour(Wh) | 0.003412 Natural Gas Low Heating Value (NG LHV) |
| 1 Watt-hour(Wh) | 3600.000000 Newton-meter (Nm) |
| 1 Watt-hour(Wh) | 0.000034 Therms |
| 1 Watt-hour(Wh) | 0.001000 Kilowatt-hour (kwh) |
| 1 Watt-hour(Wh) | 3600.000000 Watt-second (Ws) |
Features of Our Watt-hour (Wh) to Joule (J) Conversion Calculator
Our Watt-hour Wh to Joule (J) converter is more than just a basic converter. Here's what makes it stand out:Output Precision Control
You can control how precise your conversion results are. From settings, you can adjust decimal places from 0 to 12 places.Customizable Rounding Options
You can control the output rounding options based on your necessity. You can turn the rounding mode on or off, and select between Ceiling or Floor rounding to match your needs.Multiple Number Formats
Display your results the way you want:- Standard format (e.g. 12.345245)
- Scientific notation (e.g. 1.23452e+1)
- Engineering format (e.g. 1.23452 × 10^1)

