What is watt hour?

A watt hour is a unit of energy equal to the power of one watt sustained for one hour. It is used to measure small amounts of electrical energy consumption, particularly in battery capacities and portable electronics.

What is therm (US)?

A US therm is a unit of energy equal to 100,000 BTU. It is used by gas utility companies in the United States as the standard billing unit for natural gas consumption.

Worked examples

1 watt hour = 0.00003412 therm (US)

1 therm (US) = 105,506,000 joule

More Energy conversions

• Convert watt hour to joule
• Convert watt hour to kilojoule
• Convert watt hour to kilowatt hour
• Convert watt hour to calorie (thermochemical)
• Convert watt hour to kilocalorie (dietary)
• Convert watt hour to megajoule
• Convert watt hour to electronvolt
• Convert watt hour to British thermal unit
• Convert watt hour to therm (US)

Assumption: calorie means thermochemical calorie, and therm means US therm.