Siding & Exterior calculators
Estimate siding squares, gutter and downspout runs, soffit and fascia, and the trim that goes with them.
Siding & Exterior
Gutter Calculator
Calculate gutter and downspout footage from your roof edge length. Get downspout count, hangers needed, and an installed cost estimate in seconds.
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Siding Calculator
Calculate how much siding you need in squares. Enter wall area, gables, and openings to get net area, boxes to order, and estimated material cost.
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Soffit and Fascia Calculator
Calculate soffit square footage, fascia linear feet, panel count, and installed cost from your eave run, overhang depth, and gable rake length.
Open calculatorSiding & Exterior estimating FAQ
What can I estimate with the siding & exterior calculators?
Estimate siding squares, gutter and downspout runs, soffit and fascia, and the trim that goes with them. Each tool shows the formula and a worked example so you can see exactly how the result is produced.
Do these tools include labor and tax?
Unless a calculator explicitly asks for a price that includes labor, results cover materials and quantities only. Add labor, tax, and delivery from local quotes for a full budget.
Are the calculators free?
Yes — all calculators are free, run in your browser, and require no account.
Regional cost data
What these projects cost per unit in all 50 states and DC.
Siding & Exterior cost guides
- Gutter Replacement Cost: New Gutters by the Foot What new gutters cost per linear foot installed in 2026 by material, when 6-inch is required, seamless vs sectional, and the fascia repair nobody quotes.
- Siding Replacement Cost: What It Costs to Side a House Siding replacement costs in 2026 by the square and per square foot installed, how vinyl, fiber cement, cedar and brick compare, and what tear-off really adds.