Watt hour → Kilojoule (Wh → kJ)

1 Wh = 3.6 kJ
1 Watt hour (Wh) = 3.6 Kilojoule (kJ).

Watt hour (Wh):


Kilojoule (kJ):

If you want to reverse convert, use Kilojoule → Watt hour. 1 kJ = 0.27777777777778 Wh. You can also explore the full Energy converter page for more cross conversions.

Conversion formula

Watt hour to Kilojoule formula: value in kJ = value in Wh × 3.6.

Kilojoule to Watt hour formula: value in Wh = value in kJ × 0.27777777777778.

How to convert Watt hour to Kilojoule

To convert Watt hour to Kilojoule, multiply the value in Wh by 3.6. This gives the result in kJ.

For example, 1 Wh = 3.6 kJ and 10 Wh = 36 kJ.

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.

What is Kilojoule?

Kilojoule (kJ): Useful for food-energy values and heat calculations without large joule totals. 1 kJ = 1000 J; 4.184 kJ = 1 kcal.

FAQ

Watt hour → other Energy units

• 1 watt hour → joule = 3600 joule
• 1 watt hour → kilojoule = 3.6 kilojoule
• 1 watt hour → megajoule = 0.0036 megajoule
• 1 watt hour → calorie = 860.4206500956 calorie
• 1 watt hour → kilocalorie = 0.8604206500956 kilocalorie
• 1 watt hour → kilowatt hour = 0.001 kilowatt hour
• 1 watt hour = 1.0E-6 megawatt hour
• 1 watt hour → british thermal unit = 3.412128220196 british thermal unit
• 1 watt hour → foot pound = 2655.2197194318 foot pound
• 1 watt hour = 2.2469432668059E+16 mega electron volt
• 1 watt hour = 2.2469432668059E+22 electron volt

Watt hour → Kilojoule Table

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

Kilojoule → Watt hour Table

Kilojoule → Watt hour

The reverse value is 1 kJ = 0.27777777777778 Wh.