The watt-hour is a practical energy unit representing the energy consumed at a rate of one watt for one hour.
It is the basis of the larger kilowatt-hour unit used on electricity bills.
Measurement system: Non-SI, common commercial unit. SI equivalent: 1 Wh = 3600 J.
Watt-hour facts
- Unit name
- Watt-hour
- Symbol
- Wh
- Category
- Energy
- Measurement system
- Non-SI, common commercial unit
- SI equivalent
- 1 Wh = 3600 J
- Common uses
- Small battery capacities and portable electronic devices
Definition of the watt-hour
The watt-hour is a practical energy unit representing the energy consumed at a rate of one watt for one hour.
Measurement system and SI relationship
Non-SI, common commercial unit
SI equivalent: 1 Wh = 3600 J
History of the watt-hour
It is the basis of the larger kilowatt-hour unit used on electricity bills.
Where is the watt-hour used?
Small battery capacities and portable electronic devices