# Joule

The joule (J) is the unit of energy, work, and heat in the International System of Units (SI).

• The joule (J) is the unit of energy, work, and heat in the International System of Units (SI).
• One joule is equal to the amount of work done when a force of one newton displaces an object by one meter in the direction of that force.
• It can also be defined as the amount of energy dissipated as heat when an electric current of one ampere flows through a resistance of one ohm for one second.
• While joules are a fundamental unit, they are a relatively small unit of energy. Therefore, larger units like kilojoules (kJ) or megajoules (MJ) are often used for practical applications.
##### eV to joules (J)
pico-electronvoltpeV1 peV = 1 x 10-12 (eV)
nano-electronvoltneV1 neV = 1 x 10-9 (eV)
micro-electronµeV1 µeV = 0.000001 (eV)
milli-electronvoltmeV1 meV = 0.001 (eV)
electronvolteV1 eV = 1 (eV)
kilo-electronvoltkeV1 keV = 1,000 (eV)
mega-electronvoltMeV1 MeV = 1,000,000 (eV)
giga-electronvoltGeV1 GeV = 1,000,000,000 (eV)1 GeV = 1.60218 x 10-10 (J)
tera-electronvoltTeV1 TeV = 1,000,000,000,000 (eV)1 TeV = 1.60218 x 10-7 (J)
peta-electronvoltPeV1 PeV = 1 x 1015 (eV)1 PeV = 1.60218 x 10-4 (J)
exa-electronvoltEeV1 EeV = 1 x 1018 (eV)1 EeV = 0.160218 (J)
###### References
• One joule is equal to the amount of work done when a force of one newton displaces an object by one meter in the direction of that force.
• It can also be defined as the amount of energy dissipated as heat when an electric current of one ampere flows through a resistance of one ohm for one second.
• While joules are a fundamental unit, they are a relatively small unit of energy. Therefore, larger units like kilojoules (kJ) or megajoules (MJ) are often used for practical applications.