# Watt second conversions

energy conversions » watt second conversionsThe watt second conversion selector on this page selects the energy measurement unit to convert to starting from watt seconds (Ws). To make a conversion starting from a unit of energy other than watt second, simply click on the "Reset" button.

## What is watt second?

The **watt second** (or **watt-second**) is a derived unit of energy equal to one joule (1 Ws = 1 J), the SI derived unit of energy. It is also equal to 0.001 kilojoules (kJ), or 2.7777778x10-4 watt hours (Wh), or 2.7777778x10-7 kilowatt hours (kWh), or 2.7777778x10-10 megawatt hours (MWh) or 2.7777778x10-13 gigawatt hours (GWh).

The watt second is the energy required to produce one watt of power for one second. The watt (W) is a derived unit of power in the SI while the second (s) is an SI unit of time.

*Note:*

The SI is an abbreviation for the International System of Units.

*Symbol:*

Ws

*Plural:*

watt seconds

*Also known as:*

watt-second (plural: watt-seconds)

## Watt second conversions: links

A list with conversions from watt seconds to other (metric, imperial, or customary) energy measurement units is given below.

- watt second to barrel of oil equivalent (Ws to BOE)
- watt second to British thermal unit (59 F)
- watt second to British thermal unit (IT) (Ws to BTU)
- watt second to calorie (Ws to cal)
- watt second to calorie (15 C) (Ws to cal)
- watt second to calorie (IT) (Ws to cal)
- watt second to Celsius heat unit (IT) (Ws to CHU)
- watt second to cubic foot of natural gas
- watt second to electron volt (Ws to eV)
- watt second to erg (Ws to erg)
- watt second to foot-pound force (Ws to ft lbf)
- watt second to foot-poundal (Ws to ft pdl)
- watt second to gallon-atmosphere (UK) (Ws to gal atm)
- watt second to gallon-atmosphere (US) (Ws to gal atm)
- watt second to giga-electron volt (Ws to GeV)
- watt second to gigacalorie (Ws to Gcal)
- watt second to gigajoule (Ws to GJ)
- watt second to gigawatt hour (Ws to GWh)
- watt second to Hartree (Ws to Ha)
- watt second to horsepower-hour (Ws to hph)
- watt second to inch-pound force (Ws to in lbf)
- watt second to joule (Ws to J)
- watt second to kilo-electron volt (Ws to keV)
- watt second to kilocalorie (Ws to kcal)
- watt second to kilojoule (Ws to kJ)
- watt second to kilowatt hour (Ws to kWh)
- watt second to liter-atmosphere (Ws to L atm)
- watt second to mega-electron volt (Ws to MeV)
- watt second to megacalorie (Ws to Mcal)
- watt second to megajoule (Ws to MJ)
- watt second to megawatt hour (Ws to MWh)
- watt second to microjoule (Ws to μJ)
- watt second to milli-electron volt (Ws to meV)
- watt second to millijoule (Ws to mJ)
- watt second to nanojoule (Ws to nJ)
- watt second to Newton metre (Ws to Nm)
- watt second to standard cubic centimeter (Ws to scc)
- watt second to standard cubic foot (Ws to scf)
- watt second to standard cubic yard (Ws to scy)
- watt second to tera-electron volt (Ws to TeV)
- watt second to terajoule (Ws to TJ)
- watt second to terawatt hour (Ws to TWh)
- watt second to ton of coal equivalent (Ws to TCE)
- watt second to ton of oil equivalent (Ws to TOE)
- watt second to watt hour (Ws to Wh)