Home Projects & Materials
Good estimates prevent two expensive problems: running out halfway through and overbuying “just in case.” These tools use standard assumptions and let you adjust for waste and coverage.
Choose the right calculator
Paint
Gallons and cost for walls, ceiling, doors, windows. Multiple coats.
Roofing
Pitch-adjusted squares, bundles, waste, and shingle cost.
Drywall
Sheets, compound, tape, screws, and cost with waste.
Deck Materials
Decking, joists, posts, railing, stairs, hardware, total cost.
Flooring
Area, boxes, waste, and material cost for floors and tile.
Concrete
Volume, bags, and cost for slabs, footings, columns.
Insulation
Bags/rolls/sheets for batt, blown, or rigid at target R-value.
Siding
Wall area, panels, waste, trim pieces, and cost.
Fence
Posts, panels/pickets, gates, rails, concrete, total from linear feet.
Stair Stringer
Risers, treads, stringer length, cut list, and material.
Cabinets & Countertops
Area/linear, sink cutouts, waste, and cost.
Wallpaper
Rolls needed with pattern repeat and waste.
Board Feet & Lumber
Convert dimensions to board feet + cost with waste.
Mulch & Gravel
Volume, bags, and cost for yard materials.
Electricity Cost
kWh and monthly cost from wattage, hours, and your rate.
Fuel Cost
Trip fuel, tolls, cost per mile or per person.
Fuel Efficiency
MPG ↔ L/100 km + trip fuel and cost.
Lawn Fertilizer
Bags for area and N-P-K rate.
Garden Planting
Plants per row and total for a bed at given spacing.
Window ROI
Energy savings vs cost of new windows.
Solar Payback
Years to payback given production and incentives.
HVAC Sizing
Rough BTU/ton from square footage and climate.
Gutter Capacity
Can your gutters handle rainfall for the roof area?
Septic Pump Schedule
Recommended pumping frequency by tank size and household.
Well Water Use
Daily/annual use estimate for household + irrigation.
Pool Chemicals
Chlorine or other amounts for pool volume.
Closet Capacity
Hanging space, shelves, and drawers you can fit.
Furniture Layout
Simple room grid planner to test fit.
Quick reference assumptions
- Standard door ≈ 20 sq ft, standard window ≈ 15 sq ft for deductions.
- Paint coverage is listed on the can; porous surfaces, roller nap, and color changes reduce it.
- Roofing and flooring waste is usually 10–15% depending on pattern and cuts.
- Deck joist counts assume end joists plus spacing; attached decks often need fewer posts.
- Concrete volume does not include rebar, wire, or forms—order a bit extra for the truck.
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