## ››Convert therm [U.S.] to zettajoule

 therm [U.S.] zettajoule

 Did you mean to convert therm [Europe] therm [U.S.] to zettajoule

How many therm [U.S.] in 1 zettajoule? The answer is 9480434279733.5.
We assume you are converting between therm [U.S.] and zettajoule.
You can view more details on each measurement unit:
therm [U.S.] or zettajoule
The SI derived unit for energy is the joule.
1 joule is equal to 9.4804342797335E-9 therm [U.S.], or 1.0E-21 zettajoule.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between therm [U.S.] and zettajoules.
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## ››Definition: Therm

The therm (symbol thm) is a non-SI unit of heat energy. It was defined in the United States in 1968 as the energy equivalent of burning 100 cubic feet of natural gas at standard temperature and pressure. In the US gas industry its SI equivalent is defined as exactly 100,000 BTU59°F or 105.4804 megajoules. Public utilities in the U.S. use the therm unit for measuring customer usage of gas and calculating the monthly bills.

## ››Definition: Zettajoule

The SI prefix "zetta" represents a factor of 1021, or in exponential notation, 1E21.

So 1 zettajoule = 1021 joules.

The definition of a joule is as follows:

The joule (symbol J, also called newton meter, watt second, or coulomb volt) is the SI unit of energy and work. The unit is pronounced to rhyme with "tool", and is named in honor of the physicist James Prescott Joule (1818-1889).

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