Convert Therms (US) to Calories (cal)

Enter a value below to convert Therms (US) to Calories (cal).

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Conversion:

1 Therms (US) = 25216539.197 Calories (cal)

How to Convert Therms (US) to Calories (cal)

1 therm = 25216539.197 cal

1 cal = 3.9656512426e-8 therm

Example: convert 15 Therms (US) to Calories (cal):

25 therm = 630413479.92 cal

Therms (US) to Calories (cal) Conversion Table

Therms (US)Calories (cal)
0.01 therm252165.39197 cal
0.1 therm2521653.9197 cal
1 therm25216539.197 cal
2 therm50433078.394 cal
3 therm75649617.591 cal
5 therm126082695.98 cal
10 therm252165391.97 cal
20 therm504330783.94 cal
50 therm1260826959.8 cal
100 therm2521653919.7 cal
1000 therm25216539197 cal

Therms (US)

Definition

A therm is an imperial unit of heat energy equal to 100,000 BTU or approximately 105,506,000 joules. It is used primarily for natural gas billing.

History

The therm was defined by the UK Gas Act of 1920 for standardizing natural gas billing. It provided a convenient large-scale unit for measuring gas consumption across households and businesses.

Current use

Therms are used by natural gas utilities in the United States and the United Kingdom for billing residential and commercial customers. Gas bills typically show consumption in therms.

Calories (cal)

Definition

A calorie (cal), also known as a small calorie or gram calorie, is defined as the amount of heat energy needed to raise the temperature of one gram of water by one degree Celsius. It equals approximately 4.184 joules.

History

The calorie was first defined by French chemist Nicolas Clément in 1824. It was widely used in chemistry and physiology before the joule became the official SI unit of energy.

Current use

Small calories are used in chemistry and physics for heat measurements. In everyday language, 'calorie' often refers to the kilocalorie (kcal) when discussing food energy.