Joule to Watt-hour Converter (J to Wh)

How to Convert Joule to Watt-hour

Formula: Watt-hour = Joule × 0.00027778

Example: 1 J = 0.00027778 Wh

You can also use the interactive converter above. Simply enter any Joule value and the equivalent Watt-hour value will appear instantly. Click the ⇄ button to reverse the conversion.

To get more out of this conversion, it helps to know where Joule and Watt-hour actually show up in daily life, plus the quick facts people usually search for.

What is Joule and Watt-hour?

A Joule (J) is the SI unit of energy, used as the scientific standard for measuring work and heat.

A Watt-hour (Wh) is a small electrical energy unit equal to one-thousandth of a kilowatt-hour.

Real World Uses of Joule to Watt-hour Conversion

• Joule: Commonly used for appearing on nutrition labels in some countries alongside kilojoules.
• Watt-hour: Commonly used for specifying small appliance and electronics energy use.

Frequently Asked Questions

What is the formula to convert Joule to Watt-hour?

The formula is: Watt-hour = Joule x 0.00027778. Multiply any Joule value by 0.00027778 to get the equivalent in Watt-hour.

What is 1 Joule in Watt-hour?

1 J = 0.00027778 Wh.

How many Joule are in 1 Watt-hour?

1 Wh = 3599.9712002304 J.

Is Joule bigger or smaller than Watt-hour?

Joule is smaller than Watt-hour. 1 Watt-hour = 3599.9712002304 J.