›› 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 megaton [explosive]
attojoule to hartree
attojoule to gallon [UK] of automotive gasoline
attojoule to yottajoule
attojoule to dekajoule
attojoule to terajoule
attojoule to hundred cubic foot of natural gas
attojoule to terawatthour
attojoule to teraelectronvolt
attojoule to femtojoule