Calories (cal)	Therms (thm)
1 cal	3.9657e-8 thm
2 cal	7.9313e-8 thm
5 cal	1.9828e-7 thm
10 cal	3.9657e-7 thm
25 cal	9.9142e-7 thm
50 cal	0.000001983 thm
100 cal	0.000003966 thm
250 cal	0.000009914 thm
500 cal	0.00001983 thm
1000 cal	0.00003966 thm

Convert Calories to Therms

Convert calories to therms (cal to thm) with our instant calculator. 1 cal = 0 thm. Includes exact formula and reference tables.

How to Convert Calories to Therms (cal to thm)

1 Calorie (Gram/Small) (cal) is equal to 0 Therms (thm). Multiply the calorie (gram/small) value by 3.965666831e-8

Quick Answer 1 cal = 0 thm

Formula thm = cal × 3.965666831e-8

Inverse Factor 1 thm = 25216440.07218 cal

Unit Definitions & Metrology Context

The SI unit of energy is the joule (J). 1 food calorie (kcal) equals 1,000 small gram-calories, or exactly 4,184 joules.

About Calories (cal): Calorie (Gram/Small) (cal) is a unit in the Energy measurement category. It is a standard everyday unit of energy measurement. Relative to the energy base unit, 1 cal equals 4.184 Joules (J).

About Therms (thm): Therm (thm) is a unit in the Energy measurement category. It is widely used in us natural gas utility billing (100,000 btu). Relative to the energy base unit, 1 thm equals 105505585.262 Joules (J).

Need to convert in the opposite direction? Visit our Convert Therms to Calories (thm to cal) calculator (1 thm = 25216440.07218 cal).

Step-by-Step Worked Examples (cal to thm)

Convert 5 Calories to Therms: Applying the formula (thm = cal × 3.965666831e-8): starting with 5 cal, multiply the calorie (gram/small) value by 3.965666831e-8 to get 0 thm.
Convert 10 Calories to Therms: Applying the formula (thm = cal × 3.965666831e-8): starting with 10 cal, multiply the calorie (gram/small) value by 3.965666831e-8 to get 0 thm.
Convert 50 Calories to Therms: Applying the formula (thm = cal × 3.965666831e-8): starting with 50 cal, multiply the calorie (gram/small) value by 3.965666831e-8 to get 0 thm.

Popular Energy Conversions

Joule ⇄ Calorie (Gram/Small)

1 thermochemical calorie equals exactly 4.184 joules.

Kilowatt-hour ⇄ Joule

1 kilowatt-hour (kWh) equals exactly 3,600,000 joules (3.6 MJ).

Kilocalorie (Food Calorie) ⇄ Kilojoule

1 food calorie (kcal) equals exactly 4.184 kilojoules (kJ).

British Thermal Unit ⇄ Joule

1 British Thermal Unit (BTU) equals approximately 1,055.06 joules.

Frequently Asked Questions

Verified answers and formulas for converting calories to therms.

How many therms are in 1 calorie (gram/small)?

There are 0 therms (thm) in 1 calorie (gram/small) (cal). Conversely, 1 therm equals 25216440.07218 calories.

How do you convert calories to therms?

To convert calories (cal) to therms (thm), use the formula: thm = cal × 3.965666831e-8. Multiply the calorie (gram/small) value by 3.965666831e-8. For example, 10 cal equals 0 thm.

How do I convert back from therms to calories?

To convert in the reverse direction from therms (thm) to calories (cal), use the inverse formula: cal = thm × 25216440.07. Multiply the therm value by 25216440.07 (1 thm = 25216440.07218 cal).

What is the difference between calorie (gram/small) (cal) and therm (thm)?

Both calorie (gram/small) and therm measure energy. Calorie (Gram/Small) (cal) is a unit in the Energy measurement category. It is a standard everyday unit of energy measurement. Relative to the energy base unit, 1 cal equals 4.184 Joules (J). Therm (thm) is a unit in the Energy measurement category. It is widely used in us natural gas utility billing (100,000 btu). Relative to the energy base unit, 1 thm equals 105505585.262 Joules (J).

What is the difference between a calorie and a kilocalorie (kcal)?

A small calorie (cal) heats 1 gram of water by 1°C. A dietary calorie (food calorie / Calorie / kcal) equals 1,000 small calories or 4.184 kJ.