›› Convert watthour to kilojoule


›› More information from the unit converter

How many watthour in 1 kilojoule? The answer is 0.27777777777778.
We assume you are converting between watthour and kilojoule.
You can view more details on each measurement unit:
watthour or kilojoule
The SI derived unit for energy is the joule.
1 joule is equal to 0.00027777777777778 watthour, or 0.001 kilojoule.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between watthour and kilojoules.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of watthour to kilojoule

1 watthour to kilojoule = 3.6 kilojoule

5 watthour to kilojoule = 18 kilojoule

10 watthour to kilojoule = 36 kilojoule

15 watthour to kilojoule = 54 kilojoule

20 watthour to kilojoule = 72 kilojoule

25 watthour to kilojoule = 90 kilojoule

30 watthour to kilojoule = 108 kilojoule

40 watthour to kilojoule = 144 kilojoule

50 watthour to kilojoule = 180 kilojoule

›› Want other units?

You can do the reverse unit conversion from kilojoule to watthour, or enter any two units below:

Enter two units to convert


›› Common energy conversions

watthour to terawatthour
watthour to decajoule
watthour to foot poundal
watthour to meter kilogram-force
watthour to dekajoule
watthour to centijoule
watthour to yoctojoule
watthour to gigajoule
watthour to gallon
watthour to ton

›› Definition: Kilojoule

The SI prefix "kilo" represents a factor of 103, or in exponential notation, 1E3.

So 1 kilojoule = 103 joules.

The definition of a joule is as follows:

The joule (symbol J, also called newton meter, watt second, or coulomb volt) is the SI unit of energy and work. The unit is pronounced to rhyme with "tool", and is named in honor of the physicist James Prescott Joule (1818-1889).

›› Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!