Enter the total cost of the energy and the total amount of BTUs into the calculator to determine the cost per BTU.

Cost Per BTU Formula

The following equation is used to calculate the Cost Per BTU.


  • Where CBTU is the cost per BTU ($/btu)
  • TC is the total cost ($)
  • E is the total amount of energy (BTU)

To calculate the cost per btu, first, convert the energy into BTUs, then divide the total cost by the result.

What is Cost Per BTU?


A cost per BTU is a metric describing the cost per one unit of energy, which in this case, is British Thermal Units (BTU).

How to Calculate Cost Per BTU?

Example Problem:

The following example outlines the steps and information needed to calculate the Cost Per BTU.

First, determine the total amount of energy. Using the unit converter above, the energy is found to be 400 BTUs.

Next, determine the total cost of the energy. For this problem, the total cost is $250.00.

Finally, calculate the cost per BTU using the formula above:


CBTU = $250 / 400

CBTU = $.625 / BTU