How many kilojoules in 1 attojoule?
The answer is 1.0E-21.

We assume you are converting between **kilojoule** and **attojoule**.

You can view more details on each measurement unit:

kilojoules or
attojoule

The SI derived unit for **energy** is the joule.

1 joule is equal to 0.001 kilojoules, or 1.0E+18 attojoule.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between kilojoules and attojoules.

Type in your own numbers in the form to convert the units!

1 kilojoules to attojoule = 1.0E+21 attojoule

2 kilojoules to attojoule = 2.0E+21 attojoule

3 kilojoules to attojoule = 3.0E+21 attojoule

4 kilojoules to attojoule = 4.0E+21 attojoule

5 kilojoules to attojoule = 5.0E+21 attojoule

6 kilojoules to attojoule = 6.0E+21 attojoule

7 kilojoules to attojoule = 7.0E+21 attojoule

8 kilojoules to attojoule = 8.0E+21 attojoule

9 kilojoules to attojoule = 9.0E+21 attojoule

10 kilojoules to attojoule = 1.0E+22 attojoule

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

kilojoules to horsepower hour

kilojoules to megalerg

kilojoules to zeptojoule

kilojoules to yoctojoule

kilojoules to tonne of coal equivalent

kilojoules to dekatherm

kilojoules to exajoule

kilojoules to gigawatt-hour

kilojoules to celsius heat unit

kilojoules to quad

The SI prefix "kilo" represents a factor of
10^{3}, or in exponential notation, 1E3.

So 1 kilojoule = 10^{3} 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).

The SI prefix "atto" represents a factor of
10^{-18}, or in exponential notation, 1E-18.

So 1 attojoule = 10^{-18} 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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