Small home project planning
Buy the right amount before you start the job.
Fast calculators for paint, concrete, flooring, tile, drywall, landscaping, fences, decks, and contractor quote checks.
Paint Calculator
Estimate gallons of paint and primer for a room, including doors, windows, coats, and a practical waste buffer.
3 gallons
734.8 sq ft of paint coverage after waste
Shopping list
- 3 gallons of finish paint
- 1 primer gallon if covering bare drywall or stains
- Roller covers, tray liners, brush, tape, and drop cloths
Show the math
- Wall area = 2 x (12 + 12) x 8 - openings = 334 sq ft
- Coverage needed = 334 x 2 coats x 1.1 waste = 734.8 sq ft
- Gallons = 734.8 / 350, rounded up = 3
Calculator library
Start with the number you need at the store.
Each tool includes waste, rounded buying quantities, cost estimates, and visible math.
Useful guides
Short notes for the choices calculators cannot make.
These pages support real planning searches without drifting into unsafe project advice.
A practical paint estimate starts with wall area, subtracts openings, multiplies by coats, then adds a small buffer.
Paint planningWhen Do You Need Primer and Extra Paint?Primer and waste are where simple paint estimates usually go wrong, especially with stains, bare drywall, and dark color changes.
Landscape planningMulch Bags vs Cubic YardsBagged mulch is easy for small beds, but cubic-yard delivery often wins once the project gets large enough.
Gravel planningGravel Depth for Paths and Small PadsDepth changes gravel quantity quickly, so a one-inch mistake can turn into extra bags or a short delivery.
Flooring planningHow Many Flooring Boxes Should You Buy?Flooring is sold by the box, so the final answer is not square footage alone. Waste, cuts, and spare boards matter.
Flooring planningFlooring Underlayment and Transition ChecklistThe box count is only the first number. Underlayment, moisture rules, and transitions can change the real store list.
Tile planningTile, Thinset, and Grout Starter ListTile count gets you started, but thinset, grout, spacers, trim, and waterproofing can decide whether the job is actually ready.
Tile planningHow Much Tile Waste to Add by LayoutStraight tile layouts need less waste than diagonal, patterned, or small-room layouts with lots of cuts.
Drywall planningDrywall Sheets, Compound, Tape, and ScrewsA drywall sheet estimate should include finishing supplies because tape, compound, screws, and corner bead are easy to forget.
Concrete planningConcrete Bags vs Ready-MixSmall pads can make sense with bags. Larger pours usually become a time, labor, and delivery decision.
Concrete planningConcrete Bag Count Mistakes to AvoidConcrete estimates fail when inches, cubic feet, and bag yields get mixed together under time pressure.
Fence planningFence Posts, Pickets, Rails, and ConcreteFence estimates depend on post spacing first, then rails, pickets or panels, concrete, gates, and site conditions.
Deck planningDeck Board and Joist Estimate BasicsA simple deck budget starts with boards and joists, but final structure depends on spans, loads, footings, and local code.
Quote planningContractor Quote Comparison ChecklistThe cheapest quote is not always the cheapest project if scope, allowances, deposits, and change orders are unclear.
Roof planningRoof Shingle Bundles and SquaresRoofing math uses squares and bundles, but roof safety, pitch, waste, and flashing details make this a rough planning tool only.
Store run planningSmall Home Project Shopping ChecklistA good store run includes the main material, the supporting supplies, and a small buffer for normal project messiness.
Quote sanity checkDIY vs Contractor Cost CheckUse a quick cost check before you decide whether a project is worth doing yourself or quoting out.