Siding Calculator
Estimate the siding squares needed for a house, minus doors and windows.
Enter your values to see the result.
Continue your work
- Paint Calculator — Paint instead of re-siding.
- Roofing Calculator — Estimate the roof too.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the Siding Calculator
Estimate the siding squares needed for a house, minus doors and windows.
- 1 Enter the house perimeter and wall height.
- 2 Add gable ends, doors and windows.
- 3 Read the squares of siding and cost.
Example and practical tips
A house with a 140 ft perimeter and 10 ft walls needs about 15 squares of siding after openings and waste.
Frequently asked questions
What is a square?
100 square feet of siding or roofing.
Is trim included?
No. Corners, J-channel and soffits are ordered separately by length.
Report an issue
Something broken or not quite right? Tell us and we will look into it.