Estimate materials and cost in seconds.
Free, accurate calculators for concrete, roofing, flooring, paint, drywall, and more. Know exactly how much material you need — and what it will cost — before you buy.
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Popular calculators
Start with the tools homeowners and contractors use most.
Concrete Calculator
Estimate the cubic yards (or meters) of concrete and the number of bags you need for a slab, footing, or patio.
OpenRoofing Calculator
Estimate roof area, squares, and shingle bundles from your home's footprint and roof pitch.
OpenRoof Pitch Calculator
Convert roof rise and run into pitch (X:12), roof angle in degrees, and the area multiplier.
OpenFlooring Calculator
Calculate the square footage, number of boxes, and cost of flooring for any room, with a waste allowance.
OpenVinyl Plank Flooring Calculator
Calculate how much luxury vinyl plank (LVP) flooring you need — square footage, boxes, and installed cost with a waste allowance.
OpenTile Calculator
Work out how many tiles you need for a floor or wall, including a cutting allowance.
OpenPaint Calculator
Estimate how many gallons or liters of paint you need for a room, including coats and openings.
OpenExterior Paint Calculator
Estimate how many gallons of exterior paint you need for your home's siding, including coats and openings.
OpenDrywall Calculator
Estimate drywall sheets, joint compound, tape, and screws for a room from its dimensions.
OpenDrywall Mud Calculator
Estimate the joint compound (mud), tape, and buckets you need to finish a drywall project by area and finish level.
OpenMulch Calculator
Find how many cubic yards or bags of mulch you need to cover a garden bed at any depth.
OpenTopsoil Calculator
Find how many cubic yards or bags of topsoil you need to fill a bed, level a lawn, or top-dress at any depth.
OpenSod Calculator
Calculate how much sod you need — square footage, pieces, and pallets — to lay a new lawn, with a waste allowance.
OpenAsphalt Calculator
Estimate the tons of asphalt needed to pave a driveway or lot at any thickness.
OpenGravel Calculator
Calculate cubic yards and tons of gravel for a driveway, path, or drainage project at any depth.
OpenInsulation Calculator
Estimate the square footage, material, and cost to insulate walls or an attic by insulation type.
OpenSiding Calculator
Estimate the wall area, squares, and installed cost of siding for your home's exterior.
OpenDeck Calculator
Estimate deck boards, joists, screws, and cost for a new deck from its dimensions and board size.
OpenFence Calculator
Estimate posts, sections, rails, and concrete for a new fence from its length and post spacing.
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Every calculator and guide, organized by the kind of project you're planning.
Accurate material estimates for any home improvement project
Every renovation, repair, and DIY project starts with the same question: how much material do I need? Order too little and you're back at the store mid-job; order too much and you've wasted money. HomeCalcify's free calculators replace the guesswork with fast, reliable math — giving you quantities, material counts, and a cost estimate in seconds.
Whether you're pouring a concrete slab, re-roofing with shingles, laying new flooring, painting a room, or mulching the garden, there's a purpose-built tool for the job. Each calculator shows the exact formula it uses and a step-by-step manual method, so you can check the numbers yourself and learn how the estimate works.
Built for homeowners, DIYers, and contractors
Our tools support both imperial and metric units and build in adjustable waste factors — the same allowances the trades use to account for cuts, spillage, and uneven surfaces. Browse the full calculator library, explore a project category, or read our practical how-much-do-I-need guides to plan and budget with confidence.
Popular guides
All guides →3-Tab vs Architectural Shingles: Cost & Comparison
The 3-tab vs architectural shingles cost difference, plus how they compare on lifespan, looks, and wind resistance.
How Much Does an Asphalt Driveway Cost? (2026)
Asphalt driveway costs by size and thickness, how it compares to concrete, and how to estimate tonnage.
Asphalt vs Concrete Driveway: Cost, Lifespan & Which to Choose
Compare asphalt and concrete driveways on cost, lifespan, maintenance, and climate to decide which material is right for your home.
Attic Insulation Cost (2026): Blown-In vs Batts
Attic insulation costs by type and attic size, the R-value to target, and the payback period.
Best Paint Finish for Walls (Sheen Guide)
Which paint sheen to use for each room — flat, eggshell, satin, semi-gloss — and why it matters.
Best Siding for Cold Climates
Which siding holds up best to cold, snow, and freeze-thaw — and what to avoid in northern climates.