Home Improvement Calculators

Use these free calculators to estimate material quantities, packaging, waste allowances and project costs.

  • Interior Paint Calculator — Calculate gallons of paint needed for room walls, factoring in length, width, height, coats, and window/door deductions.
  • Exterior Paint Calculator — Estimate gallons of 100% acrylic exterior paint and primer needed for home siding, trim, and gables.
  • Ceiling Paint Calculator — Calculate flat ceiling paint gallons based on room dimensions, ceiling texture, and light reflection requirements.
  • Primer Calculator — Calculate gallons of PVA or stain-blocking primer for new drywall, bare wood, or dramatic color changes.
  • Trim and Baseboard Paint Calculator — Calculate quarts or gallons of semi-gloss or enamel paint for baseboards, crown molding, door casings, and chair rails.
  • Door Paint Calculator — Estimate paint quarts or gallons needed for interior or exterior doors, factoring in paneled vs slab surfaces and casing jambs.
  • Cabinet Paint Calculator — Calculate primer and specialized cabinet enamel gallons needed for kitchen and bathroom cabinets, doors, and drawers.
  • Wallpaper Roll Calculator — Calculate how many single or double rolls of wallpaper are needed for room walls, factoring in pattern repeat waste.
  • Flooring Square-Footage Calculator — Calculate total flooring square footage for single or multiple rectangular, L-shaped, and multi-room areas with waste allowances.
  • Hardwood Flooring Calculator — Calculate solid or engineered hardwood floor bundles, fastener staples/cleats, and moisture barrier paper.
  • Laminate Flooring Calculator — Calculate laminate flooring boxes, attached/unattached foam underlayment rolls, and expansion transition strips.
  • Vinyl Plank Flooring Calculator — Calculate Luxury Vinyl Plank (LVP / SPC / WPC) boxes, perimeter quarter round moldings, and transitions.
  • Carpet Calculator — Calculate carpet square yards and roll lengths (12 ft / 15 ft rolls), carpet padding rolls, and tack strips.
  • Flooring Underlayment Calculator — Calculate roll counts for acoustic foam, cork, 6-mil poly vapor barriers, and uncoupling membrane sheets.
  • Baseboard and Trim Calculator — Calculate linear feet and piece counts for baseboards, quarter round shoe moldings, and transition strips.
  • Flooring Cost Calculator — Estimate complete flooring project budget including materials, tear-out, underlayment, transitions, and pro installation labor.
  • Floor Tile Calculator — Calculate ceramic or porcelain floor tile counts, cartons, thinset mortar bags, and grout pounds.
  • Wall Tile Calculator — Calculate wall tile cartons, mastic adhesive/thinset, edge bullnose/Jolly trims, and grout for vertical wall surfaces.
  • Backsplash Tile Calculator — Calculate tile sheets/boxes for kitchen backsplash runs, cooktop accent panels, and outlet deductions.
  • Shower Tile Calculator — Calculate tile for shower walls, shower pan floor mosaic, ceiling, waterproofing membrane, and niche trims.
  • Grout Calculator — Calculate pounds of sanded, unsanded, or epoxy grout based on tile dimensions, thickness, and joint width.
  • Thinset Mortar Calculator — Calculate 50 lb bags of polymer-modified thinset mortar based on trowel notch size and tile square footage.
  • Tile Waste Calculator — Calculate precise tile overage percentages based on room layout complexity, tile dimensions, diagonal angles, and cut patterns.
  • Tile Project Cost Calculator — Estimate total tile remodel budget including tile cartons, thinset, grout, uncoupling membrane, demo, and pro labor.
  • Concrete Slab Calculator — Calculate ready-mix cubic yards and premixed 60 lb / 80 lb bags for patios, driveways, sidewalks, and garage slabs.
  • Concrete Bag Calculator — Calculate exact 40 lb, 50 lb, 60 lb, and 80 lb premixed concrete bags for small pads, fence posts, deck footings, and repairs.
  • Concrete Footing Calculator — Calculate concrete volume and bag counts for round cylindrical sonotube piers, continuous spread footings, and deck posts.
  • Concrete Column Calculator — Calculate concrete cubic yards, 80 lb bags, vertical rebar sticks, and tie rings for round or square structural columns.
  • Concrete Block Calculator — Calculate standard 8x8x16 CMU concrete blocks, mortar bags, and core-fill concrete for foundation and retaining walls.
  • Brick Calculator — Calculate standard modular, queen, and king size face bricks, cubes/pallets, and masonry mortar bags.
  • Mortar Calculator — Calculate 80 lb bags of Type N, Type S, and Type M masonry mortar mix for bricklaying, stone, and block walls.
  • Paver Calculator — Calculate brick/concrete patio pavers, crushed stone gravel base tons, bedding sand, and polymeric joint sand.
  • Roof Shingle Calculator — Calculate roofing squares, 3-tab and architectural shingle bundles, ridge caps, and starter strips.
  • Roof Pitch Calculator — Calculate roof pitch slope (X/12), angle in degrees, slope grade percentage, and area multiplier.
  • Roof Underlayment Calculator — Calculate synthetic underlayment rolls (10-square rolls), #30 felt paper, and ice & water shield barrier rolls.
  • Metal Roofing Calculator — Calculate standing seam panels, corrugated 3-ft exposed fastener sheets, trim flashes, and gasket screws.
  • Ridge Cap Calculator — Calculate specialized hip and ridge shingle bundles or 10-ft metal ridge cap trims for roof peaks.
  • Drip Edge Calculator — Calculate standard 10-ft aluminum/galvanized T-style and L-style drip edge flashing pieces for eaves and rakes.
  • Roof Ventilation Calculator — Calculate balanced Net Free Vent Area (NFVA 1:300 & 1:150 rules), continuous soffit intake vents, and ridge exhaust vents.
  • Roof Replacement Cost Calculator — Estimate full turnkey roof replacement costs including shingles, tear-off demo, underlayment, flashing, and licensed contractor labor.
  • Decking Calculator — Calculate deck boards (5/4x6 treated wood or composite 12/16/20 ft boards), hidden fasteners, and structural screws.
  • Deck Joist Calculator — Calculate pressure-treated floor joists (2x8, 2x10, 2x12), rim joists, ledger boards, and Simpson joist hangers.
  • Deck Stair Calculator — Calculate deck stair stringers (cut 2x12s), risers (7.5" max), tread depth (10" min), and stair landing footings.
  • Deck Railing Calculator — Calculate deck railing sections (6-ft or 8-ft kits), 4x4 guardrail posts, balusters, and post-mount brackets.
  • Wood Fence Calculator — Calculate wood pickets (1x6 dog-ear cedar/pine), 4x4 posts (8-ft spacing), 2x4 horizontal backer rails, and concrete bags.
  • Chain Link Fence Calculator — Calculate 50-ft chain link fabric rolls (9 or 11 gauge), top rails, line posts, terminal corner posts, and tension wire.
  • Vinyl Fence Calculator — Calculate prefabricated 6-ft or 8-ft vinyl/PVC privacy panels, routed 5x5 vinyl posts, post caps, and concrete.
  • Fence Post Concrete Calculator — Calculate exact 50 lb and 60 lb fast-setting concrete bags per hole based on post size, auger hole diameter, and depth.
  • Mulch Calculator — Calculate bulk mulch cubic yards and 2 cu ft / 3 cu ft bags for garden beds, trees, and playgrounds.
  • Topsoil Calculator — Calculate screened loam topsoil, garden compost blend cubic yards, and tons for lawn leveling and raised beds.
  • Sod Calculator — Calculate turfgrass sod rolls/slabs (10 sq ft rolls) and pallets (450–500 sq ft) for instant green lawns.
  • Gravel Calculator — Calculate pea gravel, #57 crushed stone, decomposed granite, river rock cubic yards and tons for driveways and paths.
  • Retaining Wall Calculator — Calculate segmental concrete retaining wall blocks, cap stones, base gravel tons, backfill drainage gravel, and geogrid.
  • Plant Spacing Calculator — Calculate groundcover plants, perennials, and shrubs needed for grid or triangular (equilateral offset) bed layouts.
  • Irrigation Water Calculator — Calculate weekly sprinkler gallons, run-time minutes, and water bill cost based on lawn square footage and evapotranspiration (ET).
  • Landscape Fabric Calculator — Calculate non-woven geotextile weed barrier rolls (3-ft, 4-ft, or 6-ft wide) and 6-inch steel anchoring staples.
  • Drywall Sheet Calculator — Calculate standard 4x8, 4x10, and 4x12 sheetrock gypsum boards for walls and ceilings with door/window deductions.
  • Drywall Mud Calculator — Calculate ready-mix all-purpose joint compound 4.5-gal buckets, paper tape rolls, and setting-type hot mud bags.
  • Drywall Screw Calculator — Calculate 1-1/4" or 1-5/8" drywall screws (count and 1 lb / 5 lb boxes) based on stud spacing (12" field, 8" perimeter).
  • Batt Insulation Calculator — Calculate fiberglass and mineral wool batt insulation bags/rolls (R-13, R-15, R-19, R-21, R-30, R-38) for 16" or 24" OC framing.
  • Blown-In Insulation Calculator — Calculate loose-fill cellulose or fiberglass blown insulation bags (R-30, R-38, R-49, R-60) for attic retrofits.
  • Spray Foam Calculator — Calculate closed-cell (R-7/in) and open-cell (R-3.8/in) spray foam board feet (bd ft) kits (Froth-Pak 200 / 600).
  • Drywall Corner Bead Calculator — Calculate 8-ft and 10-ft metal, vinyl, paper-faced, and bullnose outside corner beads.
  • Vapor Barrier Calculator — Calculate 6-mil or 10-mil polyethylene sheeting rolls (10x100 ft = 1,000 sq ft) and seam sealing tape.
  • Kitchen Cabinet Calculator — Calculate base and wall cabinet box counts (12" to 36" wide increments) and linear feet for L-shaped, U-shaped, and Galley kitchens.
  • Countertop Square Footage Calculator — Calculate quartz, granite, marble, laminate, and butcher block square footage, slab counts (55 sq ft/slab), and sink cutouts.
  • Kitchen Backsplash Calculator — Calculate subway tile, mosaic mesh sheets, mastic adhesive, and grout for kitchen backsplash wall runs and range feature walls.
  • Shower Tile & Pan Calculator — Calculate shower wall tiles, shower pan floor mosaic, Schluter Kerdi waterproofing membrane, and mortar.
  • Bathroom Vanity Calculator — Calculate single and double sink bathroom vanity dimensions (24" to 72" width), plumbing clearances, and mirror sizing.
  • Bathroom Vent Fan Calculator — Calculate required exhaust fan CFM (Cubic Feet per Minute) based on room square footage, ceiling height, and jetted tubs.
  • Bathtub Replacement Calculator — Calculate standard 60" alcove batts, freestanding soaker tubs, tub surround wall kit panels, and drain rough-in dimensions.
  • Kitchen Remodel Cost Calculator — Estimate overall kitchen remodeling budgets across minor pull-and-replace, mid-range, and major upscale gut renovations.
  • Home Energy Savings Calculator — Calculate annual utility bill savings, kWh/therm reductions, and ROI across air sealing, attic insulation, and heat pumps.
  • Heat Pump Sizing Calculator — Calculate heating/cooling tonnage (1.5 to 5 tons) and BTU capacity (18,000 to 60,000 BTU) based on square footage and climate zone.
  • Solar Panel Calculator — Calculate solar system size in kW (e.g. 8 kW), panel count (400W monocrystalline), roof area, and 30% federal tax credit.
  • Electric Vehicle Charger Calculator — Calculate Level 2 EV charging speed (miles added/hr), circuit breaker amps (40A to 60A), wire gauge (6 AWG / 4 AWG), and cost.
  • Water Heater Energy Calculator — Compare annual operating costs between Standard Electric, Gas Tankless, and Hybrid Heat Pump water heaters.
  • Window Energy Loss Calculator — Calculate BTU heat loss, U-factor improvements (0.30 vs 1.10), and annual HVAC cost savings replacing drafty single-pane windows.
  • Attic Insulation Payback Calculator — Calculate simple payback period (in years) and return on investment (ROI) upgrading attic insulation from R-13 to R-49/R-60.
  • Smart Thermostat Savings Calculator — Calculate annual dollar savings (8% to 12% HVAC reduction) and months to break even installing a smart WiFi thermostat (e.g. Nest / Ecobee).
  • Moving Box Calculator — Calculate moving boxes (Small, Medium, Large, X-Large, Wardrobe) by bedroom count, household density, and room types.
  • Moving Truck Size Calculator — Calculate moving truck rental size (10 ft, 15 ft, 20 ft, 26 ft truck) and cubic foot cargo capacity by home size.
  • Closet Shelf & Rod Calculator — Calculate closet organizer wire/melamine shelving linear feet, hanging rods (single vs double hang), and support brackets.
  • Garage Storage Rack Calculator — Calculate overhead ceiling storage racks (4x8 ft / 600 lb capacity), wall-mounted lumber racks, and 27-gal tote capacity.
  • Storage Unit Size Calculator — Calculate self-storage unit size (5x5, 5x10, 10x10, 10x15, 10x20, 10x30 ft) and monthly rent based on household items.
  • Packing Tape & Bubble Wrap Calculator — Calculate heavy-duty packaging tape rolls (55-yd rolls), bubble wrap feet (small 3/16" & large 1/2"), and newsprint packing paper.
  • Pantry Shelving Calculator — Calculate walk-in and reach-in kitchen pantry shelves (12" to 16" deep), vertical spacing (10" to 18"), and support cleats.
  • Bookshelf Capacity Calculator — Calculate book capacity (hardcovers, paperbacks, textbooks) by shelf linear inches, shelf sag limits, and bookcase height.
  • Airbnb Furnishing Budget Calculator — Calculate full outfitting and furnishing budgets across bedrooms, living rooms, kitchen supplies, linens, and decor tiers.
  • Rental Turnover Cleaning Calculator — Calculate turnover cleaning hours, fee benchmarks ($110 to $275), and supply costs for short-term and long-term rentals.
  • Keyless Smart Lock ROI Calculator — Calculate annual rekey savings ($125/rekey), eliminated lockout trips, and payback time installing smart keypad locks.
  • Rental Paint Touch-Up Calculator — Calculate paint gallons (touch-up vs full apartment repaint), spackle patch kits, and scuff remediation between tenant turnovers.
  • Security Deposit Normal Wear & Tear Calculator — Calculate lawful depreciated deductions vs normal wear & tear for carpet, paint, appliances, and tenant damage under state law.
  • Rental ROI & Cap Rate Calculator — Calculate Net Operating Income (NOI), Capitalization Rate (Cap Rate), and Cash-on-Cash Return for investment properties.
  • Short-Term Rental Linen Calculator — Calculate 3-Par hospitality linen inventory (sheets, duvets, bath towels, washcloths) by bed count and guest capacity.
  • Rental Flooring Durability & Lifecycle Cost Calculator — Compare 15-year lifecycle costs between Luxury Vinyl Plank (LVP), Ceramic Tile, and Carpet across tenant turnover cycles.