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McCoy's Building Supply

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Siding Calculator

Adding siding to your house is a big job. You can make it easier by using our calculator to help you determine how many square feet of siding you need to get the job done.

Note: You will need to do the same calculations for each side of your house. The summary tool beneath the calculator will store and add your results.

  • Measure the width and height of the side(s) of your house.
  • If you have a gable, ascertain its height by measuring vertically from the roof peak down to the height of its sides.
Not Required.
  • Measure for the square footage of anything that will not be covered with siding like doors and windows. Add these together to get the total square footage of area that will not have siding.
Not Required.

Summary Tool

Use this section to calculate the total materials needed for all sides of your home.
This tool will save your multiple entries form the calculator above. You can manually add in the square footage of sides you already know.

Shop Siding at McCoy's

*We offer this calculator as a convenience to help estimate your project needs. Actual needs may differ based on other project-specific details.

  • Measure the width and height of the side(s) of your house.
  • If you have a gable, ascertain its height by measuring vertically from the roof peak down to the height of its sides.
Not Required.
  • Measure for the square footage of anything that will not be covered with siding like doors and windows. Add these together to get the total square footage of area that will not have siding.
Not Required.

*7" was used as the exposure in the above trim results.
10% has been added to the materials for waste or other needs that may arise.

Summary Tool

Use this section to calculate the total materials needed for all sides of your home.
This tool will save your multiple entries form the calculator above. You can manually add in the square footage of sides you already know.

Shop Siding at McCoy's

*We offer this calculator as a convenience to help estimate your project needs. Actual needs may differ based on other project-specific details.