## ››Convert watthour to petajoule

 watthour petajoule

How many watthour in 1 petajoule? The answer is 277777777777.78.
We assume you are converting between watthour and petajoule.
You can view more details on each measurement unit:
watthour or petajoule
The SI derived unit for energy is the joule.
1 joule is equal to 0.00027777777777778 watthour, or 1.0E-15 petajoule.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between watthour and petajoules.
Type in your own numbers in the form to convert the units!

## ››Want other units?

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

## Enter two units to convert

 From: To:

## ››Definition: Petajoule

The SI prefix "peta" represents a factor of 1015, or in exponential notation, 1E15.

So 1 petajoule = 1015 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!