Enter the total usage (gallons) and the home size (ft^2) into the Calculator. The calculator will evaluate the Heating Oil Usage. 

Heating Oil Usage Formula



  • HOU is the Heating Oil Usage (gallons/ft^2)
  • TU is the total usage (gallons)
  • HS is the home size (ft^2)

To calculate Heating Oil Usage, divide the total usage in gallons by the home size.

How to Calculate Heating Oil Usage?

The following steps outline how to calculate the Heating Oil Usage.

  1. First, determine the total usage (gallons). 
  2. Next, determine the home size (ft^2). 
  3. Next, gather the formula from above = HOU = TU / HS.
  4. Finally, calculate the Heating Oil Usage.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

total usage (gallons) = 200

home size (ft^2) = 5000