Siding Price Calculator
Price siding per square foot and per square so you can compare products and quotes without the guesswork.
Walls (feet)
Gables / triangles optional
Windows & doors to subtract
Tip: measure each wall's width × height at its widest points. A per-wall audit table appears below so you can check every number.
Your siding squares, panels and cost appear here.
Estimated from wall count and perimeter — confirm against your actual corners and openings.
Cost per sq ft: – · per square: –
| Surface | Area (sq ft) |
|---|
Two units, one clear price
Contractors think in squares; homeowners think in square feet; suppliers quote per piece. That mismatch is where confusion — and overpaying — creeps in. This calculator gives you both a per-square-foot and a per-square price for your job, so whichever unit a bid or a store uses, you can translate it instantly and see who's really cheapest.
Set your material, labor and removal rates and the tool prices your measured area, then divides back to per-unit figures. It's the fastest way to sanity-check a number someone quotes you on the spot.
Getting an estimate in a couple of minutes
There's no learning curve here. Enter what you measured and the tool does the conversions; the only judgment call is the waste percentage. Start by choosing your material at the top of the form, since that sets the coverage the math relies on. Then add your walls one line at a time — front, back and both sides — typing each width, height and quantity.
Next, deal with the parts a plain rectangle misses: add any gable as its base and rise, and subtract each window and door by size and count. Finally, set a waste allowance (10% for a simple house, more for a cut-up one) and, if you want a budget, turn on the cost fields. The result — squares, panels, boxes, accessories and price — updates as soon as you calculate, ready to print, copy or share.
Data sources and limitations
Two kinds of numbers feed this tool. The geometry — areas, openings, squares, waste — is fixed arithmetic and as accurate as your tape. The material coverage and the cost estimates are planning values based on common manufacturer specifications and reported US installed pricing; they vary with product line, region and labor, which is why they appear as ranges. Treat the result as a solid starting point for budgeting and ordering, subject to a field measure and your contractor's quote.
What experienced installers double-check
Your result above answers the main question. Before you buy, run through the practical points that most affect a siding price project, so the number translates cleanly into a real order.
- Confirm coverage: the default coverage is a planning figure. Check the exact coverage printed on your product's box or spec sheet and adjust it if it differs, since even a small change moves the piece count on a big wall.
- Match the waste to your walls: keep 10% for a simple rectangular house, and raise it toward 15% for gables, dormers, bay windows and lots of angled cuts, because those details generate short offcuts you can't reuse.
- Account for accessories: starter strip, trim, inside and outside corners, flashing and fasteners are all part of a complete order, not an afterthought — the takeoff above estimates each so your material list is whole.
- Keep a spare: hold back a piece or a full box for future repairs, since profiles and colors get discontinued over time and an exact match years later is hard to find.
- Time your order: have material delivered close to the start date, stored flat and dry, so it isn't sitting exposed or getting damaged before the crew arrives.
Re-run the numbers above after any change and lean on the per-wall audit to verify each surface one at a time, so what you order matches what the wall actually needs rather than a rough guess. That small habit is the difference between one clean delivery and a mid-project trip back to the supplier.
Frequently asked questions
How is siding priced?
What's a good price per square for siding?
How do I convert per square foot to per square?
Does the price include labor?
Notes from the field
"Translated a 'per square' quote to per square foot in seconds. No more confusion at the counter."