## ››Convert watthour to femtojoule

 watthour femtojoule

## ››More information from the unit converter

How many watthour in 1 femtojoule? The answer is 2.7777777777778E-19.
We assume you are converting between watthour and femtojoule.
You can view more details on each measurement unit:
watthour or femtojoule
The SI derived unit for energy is the joule.
1 joule is equal to 0.00027777777777778 watthour, or 1.0E+15 femtojoule.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between watthour and femtojoules.
Type in your own numbers in the form to convert the units!

## ››Quick conversion chart of watthour to femtojoule

1 watthour to femtojoule = 3.6E+18 femtojoule

2 watthour to femtojoule = 7.2E+18 femtojoule

3 watthour to femtojoule = 1.08E+19 femtojoule

4 watthour to femtojoule = 1.44E+19 femtojoule

5 watthour to femtojoule = 1.8E+19 femtojoule

6 watthour to femtojoule = 2.16E+19 femtojoule

7 watthour to femtojoule = 2.52E+19 femtojoule

8 watthour to femtojoule = 2.88E+19 femtojoule

9 watthour to femtojoule = 3.24E+19 femtojoule

10 watthour to femtojoule = 3.6E+19 femtojoule

## ››Want other units?

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

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## ››Definition: Femtojoule

The SI prefix "femto" represents a factor of 10-15, or in exponential notation, 1E-15.

So 1 femtojoule = 10-15 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).

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