Joule → Watt hour (J → Wh)

1 J = 0.00027777777777778 Wh
1 Joule (J) = 0.00027777777777778 Watt hour (Wh).

Joule (J):


Watt hour (Wh):

If you want to reverse convert, use Watt hour → Joule. 1 Wh = 3600 J. You can also explore the full Energy converter page for more cross conversions.

Conversion formula

Joule to Watt hour formula: value in Wh = value in J × 0.00027777777777778.

Watt hour to Joule formula: value in J = value in Wh × 3600.

How to convert Joule to Watt hour

To convert Joule to Watt hour, multiply the value in J by 0.00027777777777778. This gives the result in Wh.

For example, 1 J = 0.00027777777777778 Wh and 10 J = 0.0027777777777778 Wh.

What is Joule?

Joule (J): The SI energy unit connects mechanical work with electrical energy. 1 J = 1 N·m = 1 W·s.

What is Watt hour?

Watt hour (Wh): The energy used by a one-watt device running for one hour; common in battery specifications. 1 Wh = 1 W × 1 h = 3600 J.

FAQ

Joule → other Energy units

• 1 joule → kilojoule = 0.001 kilojoule
• 1 joule = 1.0E-6 megajoule
• 1 joule → calorie = 0.23900573613767 calorie
• 1 joule → kilocalorie = 0.00023900573613767 kilocalorie
• 1 joule → watt hour = 0.00027777777777778 watt hour
• 1 joule = 2.7777777777778E-7 kilowatt hour
• 1 joule = 2.7777777777778E-10 megawatt hour
• 1 joule → british thermal unit = 0.00094781339449889 british thermal unit
• 1 joule → foot pound = 0.7375610331755 foot pound
• 1 joule = 6241509074460.8 mega electron volt
• 1 joule = 6.2415090744608E+18 electron volt

Joule → Watt hour Table

The table below shows common values from Joule to Watt hour and the reverse direction for quick reference.

Watt hour → Joule Table

Watt hour → Joule

The reverse value is 1 Wh = 3600 J.