Siding Quote Calculator
Turn a set of measurements into a priced siding quote — quantities, accessories and an installed total — in minutes.
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) |
|---|
A quick quote you can stand behind
Whether you're a contractor sketching a ballpark for a client or a homeowner drafting a scope to send out, a quote needs numbers that hold up. This calculator produces the quantities (squares, panels, boxes), the accessory list, and a priced total with a per-wall audit — the bones of a real quote you can refine into a formal proposal.
Set your material and labor rates once and reuse them across jobs; adjust waste and removal per property. The share link lets a client reopen the same calculation to see how the number was built.
How to fill it in (and what each field does)
Every field maps to a real measurement, so if you can read a tape you can use this. Walk through it top to bottom:
- Units + material: feet or meters, then the product you're installing — this sets coverage and a starting price.
- Walls: add a row per wall face with its width, height and count.
- Gables: base and rise for each triangle under the roof.
- Windows & doors: size and count for each, so their area is removed.
- Waste & cost: a percentage cushion plus optional labor and removal rates.
Hit calculate and the full breakdown appears below the form.
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 to check before you order
You've got a number — now protect it. These are the checks that keep a siding quote order from coming up short or over-buying.
- 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 do I quote a siding job?
Is this a binding quote?
Can homeowners use it to request quotes?
Does it show a per-wall breakdown?
What users tell us
"I ballpark every lead with this before a site visit. Clients like seeing the breakdown."