How many kilojoule 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:

kilojoule or
attojoule

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

1 joule is equal to 0.001 kilojoule, 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 kilojoule to attojoule = 1.0E+21 attojoule

2 kilojoule to attojoule = 2.0E+21 attojoule

3 kilojoule to attojoule = 3.0E+21 attojoule

4 kilojoule to attojoule = 4.0E+21 attojoule

5 kilojoule to attojoule = 5.0E+21 attojoule

6 kilojoule to attojoule = 6.0E+21 attojoule

7 kilojoule to attojoule = 7.0E+21 attojoule

8 kilojoule to attojoule = 8.0E+21 attojoule

9 kilojoule to attojoule = 9.0E+21 attojoule

10 kilojoule to attojoule = 1.0E+22 attojoule

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

kilojoule to kiloton

kilojoule to kiloelectron volt

kilojoule to tonne of oil equivalent

kilojoule to joule

kilojoule to picojoule

kilojoule to petajoule

kilojoule to gigajoule

kilojoule to liter atmosphere

kilojoule to Q unit

kilojoule to megalerg

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).

**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!