Cost Per Therm Calculator

Formula

To calculate the Cost Per Therm (CPTH):

\[ CPTH = \frac{TC}{\frac{V}{1000}} \]

Where:

$CPTH$ is the Cost Per Therm in dollars per therm
$TC$ is the Total Cost of Natural Gas in dollars
$V$ is the Volume of Natural Gas in cubic feet

What is Cost Per Therm?

A cost per therm is a term used to describe the cost of 1000 cubic feet of volume of some material, which is most often natural gas. A therm is simply a unit of measure equal to 1000 cubic feet.

Example Calculation 1

Let's assume the following values:

Total Cost of Natural Gas ($TC$) = $200
Volume of Natural Gas ($V$) = 1500 ft³

Using the formula:

\[ CPTH = \frac{200}{\frac{1500}{1000}} = \frac{200}{1.5} = 133.33 \text{ dollars per therm} \]

The Cost Per Therm is $133.33 per therm.

Example Calculation 2

Let's assume the following values:

Total Cost of Natural Gas ($TC$) = $300
Volume of Natural Gas ($V$) = 2500 ft³

Using the formula:

\[ CPTH = \frac{300}{\frac{2500}{1000}} = \frac{300}{2.5} = 120 \text{ dollars per therm} \]

The Cost Per Therm is $120 per therm.