Kilowatt-hour kWh
About the Kilowatt-hour
A kilowatt-hour is the energy delivered by one kilowatt of power for one hour, exactly 3.6 megajoules. It is the unit on household electricity bills worldwide. National energy statistics often use its multiples, terawatt-hours.
Related Units
Joule
J1 J = 1 N·m = 1 kg·m²·s⁻²
The joule is the work done when a force of one newton moves its point of application one metre. It is named after James...
British thermal unit
BTU≈ 1055.056 J (International Table)
The British thermal unit is roughly the heat needed to raise one pound of water by one degree Fahrenheit, about 1055.06...
Erg
erg10⁻⁷ J (exact)
The erg is one dyne acting through one centimetre, exactly 10⁻⁷ joules. Its name comes from the Greek ergon, work...
Electronvolt
eV1.602176634 × 10⁻¹⁹ J (exact)
An electronvolt is the energy gained by one electron accelerated through a potential difference of one volt. Since the...