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Therm (thm)

100,000 BTU — the natural-gas billing unit in the US and UK.

Result105,505,585.3

1 therm = 105,505,585.3 joules

Therm at a glance

Unit nameTherm (plural: therms)
Symbolthm
Quantity measuredEnergy
Measurement systemMetric
Also known astherms
Definition exact?No — factor is rounded

1 therm in other energy units

Unit1 thm equals
Joule105,505,585 J
Kilojoule105,505.585 kJ
Megajoule105.505585 MJ
Calorie25,216,440.1 cal
Kilocalorie25,216.4401 kcal
Watt-hour29,307.107 Wh
Kilowatt-hour29.307107 kWh
Megawatt-hour0.029307107 MWh
Electronvolt6.58514068 × 10²⁶ eV
British thermal unit100,000 BTU
Foot-pound77,816,926.2 ft·lb

Frequently asked questions

What is a therm?
100,000 BTU — the natural-gas billing unit in the US and UK.
What is the symbol for the therm?
The symbol for the therm is thm. It measures energy.
How many joules are in a therm?
1 therm = 105,505,585 joules.
How many kilojoules are in a therm?
1 therm = 105,505.585 kilojoules.
How many kilocalories are in a therm?
1 therm = 25,216.4401 kilocalories.