Estimate materials and costs for any DIY or professional project.
Calculate board feet of lumber for any project with individual boards or a full lumber list.
Calculate deck boards, framing, fasteners, and total material cost. Includes multiple decking patterns.
Calculate fence posts, rails, pickets, concrete, and total cost for wood, chain link, and vinyl.
Calculate roofing squares, shingles, underlayment, and ridge cap for any roof pitch and size.
Calculate rise, run, steps, and stringer length. Checks IRC code compliance. Includes visual diagram.
Calculate drywall sheets, screws, joint compound, and tape for any room with waste factor.
Calculate flooring for any room. Covers hardwood, laminate, vinyl, tile, and carpet with full cost estimates.
Calculate insulation by R-value and type. Covers batts, blown-in, spray foam, and rigid board.
Calculate gallons of paint for any room. Accounts for doors, windows, coats, and waste.
Calculate tiles for floors, walls, and backsplashes. Includes grout, adhesive, and cost per sq ft.
Calculate tons or cubic yards of gravel, crushed stone, or fill dirt for driveways and landscaping.
Calculate cubic yards or bags of mulch for garden beds, landscaping, and playgrounds.
Calculate pool volume in gallons and liters. Includes chemical dosing and annual cost estimator.
Whether you are pouring a concrete slab, building a deck, installing new flooring, or painting a room, getting your material estimate right the first time saves real money. Overordering by even 10 percent on a large roofing job can mean hundreds of dollars in wasted materials. Our 16 free construction calculators cover every major residential project category so you can walk into any home improvement store with a precise materials list.
Each calculator is built around real contractor formulas. The concrete calculator accounts for waste factor and lets you choose between cubic yards and bags. The roofing calculator handles any roof pitch and gives you shingle counts, underlayment, and ridge cap totals. The deck calculator breaks out boards, framing lumber, fasteners, and hardware separately so you can price each component.
Professional contractors follow three rules that homeowners often skip. First, always add a waste factor. For tile and flooring, 10 percent is standard. For irregular rooms or diagonal patterns, go 15 percent. Second, measure twice. A 1-foot error on a 20x20 room adds 40 square feet to your flooring order. Third, price materials before finalizing the project scope. A deck that works at $3 per linear foot for decking fails at $5.
| Project | Avg Material Cost | Waste Factor |
|---|---|---|
| Concrete slab (4 inch) | $4 to $8 per sq ft | 5 to 10% |
| Asphalt shingles | $100 to $150 per square | 10 to 15% |
| Hardwood flooring | $3 to $8 per sq ft | 10% |
| Interior paint | $30 to $60 per gallon | None |
| Pressure treated deck boards | $2 to $4 per linear ft | 10 to 15% |
| Vinyl fence (6 ft privacy) | $25 to $40 per linear ft | 5% |
Most homeowners save 30 to 50 percent on labor by tackling projects themselves. A typical deck installation runs $15 to $35 per square foot with labor. Material costs alone run $8 to $15 per square foot. Our deck calculator gives you the material number so you can decide whether the labor savings justify the time investment. For concrete work, fence installation, and flooring, the math usually favors DIY for anyone comfortable with basic tools.
The projects where professional labor is worth the cost are roofing (safety and warranty concerns), load-bearing structural work, and anything requiring permits in your jurisdiction. For landscaping work like gravel, mulch, and retaining walls, the material quantities are large enough that even small estimation errors become expensive, which is exactly where our calculators pay for themselves.