Free Home Improvement Calculators
Plan your next project with precision. Estimate materials, compare options, and budget your build — 100% free, no signup required.
Explore CalculatorsPaint Calculator
Calculate exactly how many gallons of paint you need for any room. Accounts for doors, windows, and number of coats.
Calculate now →Mulch & Gravel Calculator
Find out how much mulch, gravel, or river rock you need by area and depth. Get results in cubic yards, bags, or tons.
Calculate now →Concrete Calculator
Estimate concrete volume for slabs, post holes, and stairs. Know exactly how many bags or yards to order.
Calculate now →Fence Material Calculator
Calculate posts, rails, and pickets needed for your fence project. Supports privacy, picket, and ranch rail styles.
Calculate now →Decking Calculator
Calculate deck boards, joists, screws, and concrete footings for your deck project. Supports wood and composite.
Calculate now →Tile & Flooring Calculator
Calculate tiles, boxes, grout, and thinset for floors, walls, and backsplashes. Includes waste factor estimates.
Calculate now →Roofing Calculator
Calculate shingles, bundles, underlayment, and ridge caps for your roof. Accounts for pitch and waste factor.
Calculate now →Drywall Calculator
Calculate drywall sheets, joint compound, tape, and screws for walls and ceilings. Supports 4x8 and 4x12 sheets.
Calculate now →Lawn Seed & Sod Calculator
Calculate grass seed, sod pallets, starter fertilizer, and topsoil for new lawns, overseeding, and patching.
Calculate now →Raised Garden Bed Calculator
Calculate soil, lumber, and hardware needed to build raised garden beds. Supports popular soil mix ratios.
Calculate now →Paver & Patio Calculator
Calculate pavers, sand, gravel base, and edging for patios, walkways, and driveways. Multiple paver sizes.
Calculate now →Retaining Wall Calculator
Calculate wall blocks, cap stones, gravel backfill, drain pipe, and fabric for your retaining wall project.
Calculate now →Wallpaper Calculator
Calculate how many rolls of wallpaper you need. Accounts for pattern repeat, doors, and windows.
Calculate now →Insulation Calculator
Calculate insulation for walls, attics, or floors. Get results in batts, rolls, or bags of blown-in.
Calculate now →Stain & Sealer Calculator
Calculate how much stain or sealer you need for decks, fences, or siding. Accounts for surface type and coats.
Calculate now →Carpet Calculator
Calculate how much carpet and padding you need for any room. Get estimates in square feet, square yards, and linear feet.
Calculate now →Siding Calculator
Calculate siding, house wrap, and trim for your home exterior. Supports vinyl, fiber cement, and wood lap.
Calculate now →Crown Molding Calculator
Calculate crown molding and baseboard trim for any room. Supports MDF, pine, oak, and polyurethane.
Calculate now →Gutter Calculator
Calculate gutters, downspouts, hangers, and elbows for your home. Supports K-style and half-round styles.
Calculate now →Baseboard Calculator
Calculate baseboard trim and quarter round for any room. Supports MDF, pine, oak, and PVC materials.
Calculate now →Lawn Fertilizer Calculator
Calculate how much fertilizer your lawn needs. Supports granular, liquid, and organic with cost estimates.
Calculate now →Gravel Driveway Calculator
Calculate tons of gravel needed for driveways, paths, and parking areas. Supports crushed stone, pea gravel, and river rock.
Calculate now →Brick Calculator
Calculate bricks needed for walls, patios, walkways, and fire pits. Accounts for mortar joints and waste.
Calculate now →Backsplash Calculator
Calculate tile needed for a kitchen backsplash. Supports subway, mosaic, and standard tile sizes.
Calculate now →French Drain Calculator
Calculate pipe, gravel, and landscape fabric needed for a French drain with cost breakdowns.
Calculate now →Shed Calculator
Calculate lumber, sheathing, roofing, and siding for a DIY storage shed. Supports gable and lean-to roofs.
Calculate now →Epoxy Floor Calculator
Calculate epoxy coating for garage and workshop floors. Includes primer, base coat, and top coat estimates.
Calculate now →Wainscoting Calculator
Calculate beadboard, shaker, raised panel, or board & batten wainscoting materials with trim and cost estimates.
Calculate now →Deck Stair Calculator
Calculate the number of steps, stringer length, treads, and risers for deck stairs with material costs.
Calculate now →Landscape Edging Calculator
Calculate steel, aluminum, plastic, brick, or stone edging for garden beds and paths with cost estimates.
Calculate now →Driveway Sealcoat Calculator
Calculate driveway sealer, crack filler, and applicator needs. Get bucket counts and total project cost.
Calculate now →Pergola Calculator
Estimate posts, beams, rafters, cross-slats, and hardware for your pergola project with full cost breakdown.
Calculate now →Attic Insulation Calculator
Calculate blown-in or batt insulation for your attic. Choose your R-value target and get accurate bag or roll counts.
Calculate now →Exterior Paint Calculator
Calculate gallons of exterior paint for siding, trim, and gables. Accounts for surface texture, coats, and openings.
Calculate now →Deck Mud Calculator
Calculate dry-pack mortar for shower pans and tile beds. Get sand, cement, and pre-mixed bag counts by thickness.
Calculate now →BTU Calculator
Find the right AC or heater size for any room. Accounts for insulation, sun exposure, climate, and occupancy.
Calculate now →Mini Split Sizing Calculator
Size a ductless mini split by room and conditions — and see which standard BTU head size to buy.
Calculate now →Dehumidifier Calculator
Find the right dehumidifier pint capacity for basements, crawl spaces, and living areas by dampness level.
Calculate now →Material Comparisons
Not sure which material to choose? Our side-by-side comparisons break down cost, durability, maintenance, and more to help you decide.
Composite vs Wood Decking
Compare cost, lifespan, maintenance, and appearance for your deck project.
Read comparison →Concrete vs Pavers
Poured slab or paver stones? Compare cost, durability, and DIY difficulty for patios.
Read comparison →Sod vs Grass Seed
Instant lawn or grow from scratch? Compare cost, timing, and results.
Read comparison →Cedar vs Pressure-Treated
The two most popular outdoor lumber choices compared for decks, fences, and beds.
Read comparison →3-Tab vs Architectural Shingles
Compare cost, wind resistance, lifespan, and curb appeal for your roof.
Read comparison →Vinyl Plank vs Ceramic Tile
Compare cost, durability, water resistance, and installation for your floors.
Read comparison →Metal vs Asphalt Roofing
Compare lifespan, energy efficiency, cost, and durability for your roof.
Read comparison →Vinyl vs Wood Fencing
Compare maintenance, appearance, cost, and lifespan for your fence project.
Read comparison →Laminate vs Hardwood Flooring
Compare cost, durability, refinishability, and resale value for your floors.
Read comparison →Quartz vs Granite Countertops
Compare cost, maintenance, heat resistance, and style for your countertops.
Read comparison →Fiberglass vs Cellulose Insulation
Compare R-value, cost, fire resistance, and installation for your insulation.
Read comparison →Chain Link vs Wood Fencing
Compare cost, privacy, durability, and appearance for your yard fence.
Read comparison →Granite vs Marble Countertops
Compare cost, durability, maintenance, and appearance for your kitchen countertops.
Read comparison →Standing Seam vs Corrugated Metal
Compare cost, lifespan, weather protection, and appearance for metal roofing.
Read comparison →Engineered vs Solid Hardwood
Compare cost, refinishability, moisture resistance, and installation for hardwood floors.
Read comparison →Cost Guides
Planning your budget? Our cost guides break down real-world pricing for popular home improvement projects, including materials, labor, and money-saving tips.
How Much Does a New Roof Cost?
Asphalt, metal, and wood shake pricing with labor costs and savings tips.
Read guide →How Much Does a Fence Cost?
Wood, vinyl, and chain link pricing per linear foot with installation costs.
Read guide →How Much Does a Patio Cost?
Concrete, paver, and natural stone patio costs with DIY savings estimates.
Read guide →How Much Does Interior Painting Cost?
Per-room and whole-house painting costs with DIY vs pro comparison.
Read guide →How Much Does a Retaining Wall Cost?
Block, stone, and timber wall costs per square foot with labor pricing.
Read guide →How Much Does a Deck Cost?
Pressure-treated, cedar, and composite deck pricing with builder costs.
Read guide →How Much Does a Kitchen Remodel Cost?
Minor refresh to full gut renovation costs with cabinets, countertops, and appliances.
Read guide →How Much Does a Bathroom Remodel Cost?
Half bath to master bath renovation costs with tile, vanity, and plumbing.
Read guide →How Much Does Insulation Cost?
Fiberglass, blown-in, and spray foam costs for attics, walls, and crawl spaces.
Read guide →The Free Home Improvement Calculator for Every Project
DIYCalcTools is a complete home project calculator suite — one place to estimate materials and costs for painting, concrete, roofing, fencing, decking, flooring, landscaping, and more. Buying too much material wastes money. Buying too little means extra trips to the store and project delays. Every do-it-yourself project calculator on this site uses industry-standard formulas to give you accurate estimates so you can buy the right amount the first time.
A Free Home Renovation Estimate in Under a Minute
Each tool doubles as a home project estimator: alongside material quantities, you get low, average, and high price ranges based on U.S. national averages — and you can adjust them to your region by zip code. Whether you're a weekend DIYer or a professional contractor, these tools help you plan with confidence before you spend a dollar.
How to Use These Calculators
- Choose the calculator for your project type
- Enter your measurements (length, width, height, etc.)
- Click "Calculate" to see your material estimates
- Use the results to create your shopping list — or print it and take it to the store
Save Money on Every Project
The average homeowner overspends by 15-20% on materials due to inaccurate estimates. Using a DIY calculator before you shop helps you avoid waste, reduce returns, and keep your project on budget. Ready to plan a bigger job? Our step-by-step project guides walk you through entire builds, calculator by calculator.