thm

What is a Therm?

Definition

A therm is a unit of energy equal to 100,000 BTU or approximately 105.5 megajoules.

Popular Therm Conversions

Most common conversions from Therms

1 thm = 105,505,600 J Therm to Joules 1 thm = 105,505.6 kJ Therm to Kilojoules 1 thm = 25,216,443.59 cal Therm to Calories 1 thm = 25,216.44 kcal Therm to Kilocalories 1 thm = 29,307.11 Wh Therm to Watt Hours 1 thm = 29.3071 kWh Therm to Kilowatt Hours

History

The therm was introduced in the UK in 1920 for natural gas billing. It remains used in the US for measuring natural gas consumption.

Common Uses

Natural gas billing in the US
Heating energy calculations
Energy efficiency ratings
Utility comparisons

Fun Facts

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One therm can heat about 100 gallons of water by 100°F

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The average US home uses 50-100 therms per year for heating

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Natural gas prices are often quoted per therm

All Therm Conversions

Therms to Joules thm → J Therms to Kilojoules thm → kJ Therms to Calories thm → cal Therms to Kilocalories thm → kcal Therms to Watt Hours thm → Wh Therms to Kilowatt Hours thm → kWh Therms to Electronvolts thm → eV Therms to BTUs thm → BTU