**Glossary**»

**Units**»

**Energy**»

**A.u. of Energy**

**A.u. of Energy (**is a unit in the category of

*E*)_{h}*Energy*. It is also known as hartrees. This unit is commonly used in the a.u. unit system. A.u. of Energy (

*E*) has a dimension of ML

_{h}^{2}T

^{-2}where M is mass, L is length, and T is time. It can be converted to the corresponding standard SI unit J by multiplying its value by a factor of 4.3597482E-018.

Other units in the category of Energy include Barrel Oil Equivalent (bboe), Bboe (barrel Oil Equivalent) (bboe), BeV (billion EV) (BeV), British Thermal Unit (ISO) (Btu (ISO)), British Thermal Unit (IT) (Btu (IT)), British Thermal Unit (mean) (Btu (mean)), British Thermal Unit (thermochemical) (Btu (therm.)), Calorie (15°C) (cal_{15}), Calorie (4°C) (cal_{4}), Calorie (diet Kilocalorie) (Cal, kcal), Calorie (IT) (International Steam Table) (cal (IT)), Calorie (mean) (cal_{mean}), Calorie (thermochemical) (cal (therm.)), Celsius-Heat Unit (Chu), Coulomb Volt (C-V), Cubic Centimeter-Atm (cm^{3}-atm), Cubic Foot Atm (ft^{3}-atm), Electronvolt (eV), Erg (erg), Foot-Pound Force (ft-lbf), Foot-Poundal (ft-pdl), Gigaelectronvolt (GeV), Gram Calorie (gram-cal), Hartree (*E _{h}*), Horsepower (550ft-Lbf/s)-Hour (Hp-h), Inch Pound Force (in-lbf), Joule (J), Kilocalorie (15°C) (kcal

_{15}), Kilocalorie (4°C) (kcal

_{4}), Kiloelectronvolt (keV), Kilojoule (kJ), Kiloton TNT Equivalent (kt (TNT)), Kilowatt-Hour (kWh), Megaelectronvolt (MeV), Megajoule (MJ), Megaton TNT Equivalent (Mt (TNT)), Newton Meter (N-m), Q Unit, Quad (quad), Quadrillion (quad), Rydberg (Ry), Tce (tonne Coal Equivalent) (tce), Therm (EEG), Therm (US), Thermie (15°C) (th

_{15 °C}), Toe (tonne Oil Equivalent) (toe), Ton TNT Equivalent (ton (TNT)), Tonne Coal Equivalent (tce), Tonne Oil Equivalent (toe), and Watt Hour (Wh).

**Additional Information**

**Related Glossary Pages**

Glossary: Units: Linear Momentum: Bole

Glossary: Units: Acceleration: Foot Per Square Second

Glossary: Units: Mass: Grain (apothecary)

Glossary: Units: Area: Vergees (Guernsey)

Glossary: Units: Volume: Forty Foot Equivalent Unit

Glossary: Units: Area: Square Yard

Glossary: Units: Volume: Mease (UK)

Glossary: Units: Acceleration: G (gravitational Acceleration)

Glossary: Units: Length: Furlong (US)

**Related Pages**