›› Measurement unit: attojoule

Full name: attojoule

Plural form: attojoules

Symbol: aJ

Category type: energy

Scale factor: 1.0E-18


›› SI unit: joule

The SI derived unit for energy is the joule.
1 joule is equal to 1.0E+18 attojoule.


›› Convert attojoule to another unit

Convert attojoule to  

Valid units must be of the energy type.
You can use this form to select from known units:

Convert attojoule to  


›› Definition: Attojoule

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).


›› Sample conversions: attojoule

attojoule to femtojoule
attojoule to inch-pound
attojoule to tonne of coal equivalent
attojoule to megacalorie [I.T.]
attojoule to wattsecond
attojoule to gallon [UK] of aviation gasoline
attojoule to gigacalorie [I.T.]
attojoule to kilopond meter
attojoule to gallon [UK] of diesel oil
attojoule to millijoule