Calorie to Therm Converter
Energy · unit-converter
Convert Calorie to Therm with fixed input and output units, a step-by-step formula line, and reference tables. Factors are joule-based; food energy uses thermochemical calories. The full Energy Converter also includes MMBtu, toe, thermal kWh, and MeV/GeV.
Calculator
From: Calorie (cal)
To: Therm (therm)
About Calorie
The small calorie (cal) is 4.184 J in this converter (thermochemical). Do not confuse with the dietary kilocalorie (kcal).
About Therm
A therm is a large US customary energy unit for natural gas (≈ 105.5 MJ here).
How to convert calories to therm
1 calorie is equal to 3.96566683e-8 therm when both are expressed in joule-equivalents:
1 cal = (4.184 J ÷ 105,505,585.262 J) therm = 3.96566683e-8 therm
Each calorie is defined as 4.184 J and each therm as 105,505,585.262 J in this tool, so one cal equals 4.184 ÷ 105,505,585.262 therm = 3.96566683e-8 therm.
Let d(cal) be the numeric amount in Calorie (cal), and d(therm) the amount in Therm (therm). Then:
d(therm) = d(cal) × (4.184 / 105,505,585.262)
Equivalently, divide by how many cal fit into one therm (joules per therm divided by joules per cal):
d(therm) = d(cal) ÷ 2.52164401e+7
Or: therm = calorie ÷ 2.52164401e+7
Examples
Example #1: Convert 1 cal to therm
1 cal = 1 cal × (4.184/105,505,585.262) therm = 0.0000000397 therm
1 cal = 1 cal ÷ 2.52164401e+7 = 0.0000000397 therm
Example #2: Convert 10 cal to therm
10 cal = 10 cal × (4.184/105,505,585.262) therm = 0.0000003966 therm
10 cal = 10 cal ÷ 2.52164401e+7 = 0.0000003966 therm
Summary
To convert Calorie to Therm, multiply the value in cal by the ratio of joules per cal divided by joules per therm. Equivalently: value_therm = value_cal × (4.184 / 105505585.262). Numerically, 1 cal equals 3.9656668313909195e-8 therm.
Relationship context
You are converting between food / nutrition energy (calories) (Calories) and US / imperial engineering units (BTU, therm, ft·lb) (Therm). All values are mapped through joules first. The numeric factor is 3.965667e-8.
Conversion tables
| Calorie (cal) | Therm (therm) |
|---|---|
| 0.1 | 0.000000004 |
| 1 | 0.0000000397 |
| 2 | 0.0000000793 |
| 3 | 0.000000119 |
| 4 | 0.0000001586 |
| 5 | 0.0000001983 |
| 6 | 0.0000002379 |
| 7 | 0.0000002776 |
| 8 | 0.0000003173 |
| 9 | 0.0000003569 |
| Calorie (cal) | Therm (therm) |
|---|---|
| 10 | 0.0000003966 |
| 20 | 0.0000007931 |
| 30 | 0.0000011897 |
| 40 | 0.0000015863 |
| 50 | 0.0000019828 |
| 60 | 0.0000023794 |
| 70 | 0.000002776 |
| 80 | 0.0000031725 |
| 90 | 0.0000035691 |
| 100 | 0.0000039657 |