Convert Calories (cal) to Therms (US)
Enter a value below to convert Calories (cal) to Therms (US).
Conversion:
1 Calories (cal) = 3.9656512426e-8 Therms (US)
How to Convert Calories (cal) to Therms (US)
1 cal = 3.9656512426e-8 therm
1 therm = 25216539.197 cal
Example: convert 15 Calories (cal) to Therms (US):
25 cal = 9.9141281065e-7 therm
Calories (cal) to Therms (US) Conversion Table
| Calories (cal) | Therms (US) |
|---|---|
| 0.01 cal | 3.9656512426e-10 therm |
| 0.1 cal | 3.9656512426e-9 therm |
| 1 cal | 3.9656512426e-8 therm |
| 2 cal | 7.9313024852e-8 therm |
| 3 cal | 1.1896953728e-7 therm |
| 5 cal | 1.9828256213e-7 therm |
| 10 cal | 3.9656512426e-7 therm |
| 20 cal | 7.9313024852e-7 therm |
| 50 cal | 0.0000019828256213 therm |
| 100 cal | 0.0000039656512426 therm |
| 1000 cal | 0.000039656512426 therm |
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.
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.