# Calculiva > Home improvement calculators and project estimators for US homeowners, DIYers and installers. > Every tool draws the user's own measurements, counts each cut and piece, and shows where each number comes from. Calculiva covers residential home improvement only: materials, layouts and project costs. It does not publish finance, health, math or general-purpose calculators. What these calculators do that most do not: - dimensions are entered and returned in feet, inches and fractions to 1/16 in, with metric conversion; - each result is a buyable list: pieces, cuts, offcuts, and whole boxes, rolls or stock lengths; - every trade constant (waste allowance, roll width, coverage per box) carries its source, its verification date and its status; - a value that cannot be verified is left off the page rather than approximated. Method: https://calculiva.com/how-we-calculate/ Sources: https://calculiva.com/data-sources/ Open data (CC BY 4.0): https://calculiva.com/data/datapackage.json ## Kitchen - [Countertop calculator](https://calculiva.com/kitchen/countertop-calculator/): Subtract the outside-L corner once, separate visible surface from rough blanks, and place stock with explicit joints, grain lock and saw kerf. ## Flooring Hub: https://calculiva.com/flooring/ - [Stair carpet calculator](https://calculiva.com/flooring/stair-carpet-calculator/): Count treads and risers independently, round each flight and landing to its repeat, and inspect a same-pile broadloom cutting schedule. - [Flooring calculator](https://calculiva.com/flooring/flooring-calculator/): Plank starts, balanced row widths, end-joint checks and an identified source board for each cut. - [Laminate flooring calculator](https://calculiva.com/flooring/laminate-flooring-calculator/): Coordinate plank cuts with separate cushion and membrane rolls, including strip overlaps and finite roll lengths. - [Hardwood flooring calculator](https://calculiva.com/flooring/hardwood-flooring-calculator/): Rack counted board lengths, trace factory-ended tails and see unfilled floor before assuming the inventory is enough. - [Flooring cost calculator](https://calculiva.com/flooring/flooring-calculator-cost/): Price cartons from the drawn plan, pick the area a labor rate multiplies and compare two plank products on one room. - [Epoxy flooring calculator](https://calculiva.com/flooring/epoxy-flooring-calculator/): Dry film and volume solids per coat become gallons, whole kits and a batch card by volume and weight, mapped as floor bands. - [Carpet flooring calculator](https://calculiva.com/flooring/carpet-flooring-calculator/): Full-width drops, a fill strip pieced across the roll with T-seams, both pile directions and the linear feet each option costs. - [Rug size calculator](https://calculiva.com/flooring/rug-size-calculator/): Every position where one finished rug holds your furniture footprint and keeps the wall border, four stock sizes in both orientations, and a clearance stress test. - [Gym flooring calculator](https://calculiva.com/flooring/gym-flooring-calculator/): Rubber mats, interlocking tiles and rolls laid on one room with shared cuts, cut length, set rounding and delivery weight. ## Tile Hub: https://calculiva.com/tile/ - [Tile calculator](https://calculiva.com/tile/tile-calculator/): Inspect individual cuts and edge lengths, count finishing trim, and see how discarded material differs from spare tiles and full-box surplus. - [Grout calculator](https://calculiva.com/tile/grout-calculator/): Grout from the joints of the actual layout, cuts included and the wall edge left for caulk, weighed at the density MAPEI and LATICRETE coverage charts imply. - [Shower tile calculator](https://calculiva.com/tile/shower-tile-calculator/): Account for the niche returns, surfaces hidden behind a bench and the separate floor product before rounding the shower order into cartons. - [Wall & backsplash tile calculator](https://calculiva.com/tile/wall-tile-calculator/): Position a tiled wall or kitchen backsplash band and window from the same floor datum, then count the affected returns and uninterrupted finishing runs. - [Lowe’s tile calculator](https://calculiva.com/tile/lowes-tile-calculator/): Verified item dimensions, nominal-size comparison and a cut-based order reconciled with piece or carton sales. - [Mosaic tile calculator](https://calculiva.com/tile/mosaic-tile-calculator/): Inspect the chips inside each sheet and distinguish support trims from cuts through the tile faces. - [Ceiling tile & drop ceiling calculator](https://calculiva.com/tile/ceiling-tile-calculator/): Compare panel orientations and border widths, reserve full-module lighting cells, and count T-bar suspension grid main runners, cross tees, wall angle and hangers. - [Deck tile calculator](https://calculiva.com/tile/deck-tile-calculator/): Compare a trimmed deck footprint with whole modules and measure the uncovered borders before ordering boxes. - [Pool waterline tile calculator](https://calculiva.com/tile/pool-waterline-tile-calculator/): Count four independent wall bands, compare whole-course heights and trace the source tiles around a skimmer opening. ## Walls & finishes Hub: https://calculiva.com/wall-paneling/ - [Board and batten calculator](https://calculiva.com/wall-paneling/board-and-batten-calculator/): Exact spacing to the sixteenth, a scaled drawing of your own wall, every batten located from the left edge, and the number of 8, 10 or 12 foot boards to buy. - [Wainscoting calculator](https://calculiva.com/wall-paneling/wainscoting-calculator/): Panel width and height in fractions, the 45-degree long and short point of every frame side, cap heights from a dated source, and the sticks that adds up to. - [Picture frame molding calculator](https://calculiva.com/wall-paneling/picture-frame-molding-calculator/): Box sizes across and down, the long and short point of all four miters, outlets left out rather than moved, and a waste allowance that carries its source. - [Shiplap calculator](https://calculiva.com/wall-paneling/shiplap-calculator/): Whole courses from installed coverage, full notched blanks at opening edges, staggered joints on runs longer than stock and a board-by-board cut schedule. ## Wallpaper Hub: https://calculiva.com/wallpaper/ - [Wallpaper calculator](https://calculiva.com/wallpaper/wallpaper-calculator/): Strips cut to the repeat, openings deducted strip by strip, every drop assigned to a roll, and the area method shown beside it. - [Wallpaper calculator with repeat](https://calculiva.com/wallpaper/wallpaper-calculator-with-repeat/): Straight, half-drop, third, quarter and random matches cut drop by drop on one wall, with the paper each loses to the pattern. - [Wallpaper calculator in yards](https://calculiva.com/wallpaper/wallpaper-calculator-yards/): Linear yards of 36, 45 or 54 inch goods from the drops they cut, vertical or railroaded, against the area-divided-by-width figure. - [Painted Paper wallpaper calculator](https://calculiva.com/wallpaper/painted-paper-wallpaper-calculator/): Drops on the 24 in × 13 ft or 27 ft roll with the 24 or 48 inch repeat, the vendor’s own estimate beside the plan, and the list price of either length. - [York wallpaper calculator](https://calculiva.com/wallpaper/york-wallpaper-calculator/): York’s 17-room bolt chart re-cut in drops on the 20.5 in bolt or the 20.9 in product roll, with the product calculator reproduced and three opening rules compared. ## Windows Hub: https://calculiva.com/windows/ - [Front door replacement cost calculator](https://calculiva.com/windows/front-door-replacement-cost-calculator/): The rough opening matched to an orderable door size, the quoted door checked against ENERGY STAR and egress clearances, and the quote totaled line by line. - [Curtain size calculator](https://calculiva.com/windows/curtain-size-calculator/): Rod width, panel width at the fullness, stock panels and the fullness they deliver, the finished length and the stock length above and below it. - [Curtain fabric calculator](https://calculiva.com/windows/curtain-fabric-calculator/): Widths per panel, cut width and cut drop with named allowances, the repeat’s waste, lining yardage and the drops drawn on the bolt. - [Window replacement cost calculator](https://calculiva.com/windows/window-replacement-cost-calculator/): Your windows listed by size, two or three bids brought to a price per window and per square foot of opening, the lines a bid leaves out, and the ENERGY STAR U-factor and SHGC for your zone. ## Insulation - [Attic insulation cost calculator](https://calculiva.com/insulation/attic-insulation-cost-calculator/): The attic floor priced at your own rate per square foot, the installer’s receipt checked against the federal R-value rule, the ENERGY STAR level for your zone and the vent area at 1/150 or 1/300. - [Spray foam insulation cost calculator](https://calculiva.com/insulation/spray-foam-insulation-cost-calculator/): Climate zone to an ENERGY STAR R-value per surface, foam inches checked against the actual stud or rafter depth, board feet priced at your own quote, and the IRC thermal barrier line. ## Project costs Hub: https://calculiva.com/project-costs/ - [Basement finishing cost calculator](https://calculiva.com/project-costs/basement-finishing-cost-calculator/): A basement window checked against the IRC egress rules, the ceiling height under beams and ducts, the wall R-value for your climate zone, and your finishing quote priced line by line. - [Metal carport cost calculator](https://calculiva.com/project-costs/metal-carport-cost-calculator/): A kit footprint checked against the IRC permit size, the open-sides rule and the carport floor sentence, set against three sellers’ list prices at the same size, and a dated quote moved by the producer price index. - [Swim spa cost calculator](https://calculiva.com/project-costs/swim-spa-cost-calculator/): A swim spa’s fill volume turned into the California standby-power ceiling and its yearly cost at the EIA price of your state, the ISPSC cover-or-barrier check, and three sellers’ prices at the same length. - [Above ground pool cost calculator](https://calculiva.com/project-costs/above-ground-pool-cost-calculator/): An above-ground pool’s wall height read against the IRC permit line and the ISPSC wall-as-barrier test, the most a pump at the federal efficiency floor could cost to run at your state’s price, and three sellers’ prices at the same size and wall type. - [Gunite pool cost calculator](https://calculiva.com/project-costs/gunite-pool-cost-calculator/): A gunite pool priced on a builder’s published perimeter grid, then checked against the ISPSC inground chapter: shallow-end depth, entries and exits, the 12-hour turnover flow, the diving envelope and both fence lines. - [Pool deck resurfacing cost calculator](https://calculiva.com/project-costs/pool-deck-resurfacing-cost-calculator/): An old pool deck’s fall read against the slope the new surface needs under ISPSC Table 306.5, the overlay’s step at the sidewalk, and each coating step in gallons and pails at the maker’s prices. - [Wrought iron railing cost calculator](https://calculiva.com/project-costs/wrought-iron-railing-cost-calculator/): Iron balusters counted for a stair and a landing under the 4 in and 4-3/8 in sphere rules, the rail measured over the flight, and the infill priced at one stair-parts store in five finishes. - [Stucco repair cost calculator](https://calculiva.com/project-costs/stucco-repair-cost-calculator/): The coats a stucco patch needs and the earliest day for each under the IRC, base-coat bags at the code thickness, the weep-screed clearance, the barrier behind the patch and your own prices. - [Roof underlayment replacement cost calculator](https://calculiva.com/project-costs/roof-underlayment-replacement-cost-calculator/): Felt layers by slope under the IRC table, rolls of a self-adhered tile underlayment, every tile lifted and relaid with the broken ones replaced, and your quote brought to a price per square. - [Chimney repair cost calculator](https://calculiva.com/project-costs/chimney-repair-cost-calculator/): The stack checked against the IRC height rule and the cricket rule, the flashing perimeter and the masonry face above the roof measured, and each quote line priced at your own rate. - [Basement waterproofing cost calculator](https://calculiva.com/project-costs/basement-waterproofing-cost-calculator/): The wall area the IRC waterproofing section covers, a quoted membrane checked against the materials of your code edition, and whether your soil calls for a footing drain. - [Crawl space encapsulation cost calculator](https://calculiva.com/project-costs/crawl-space-encapsulation-cost-calculator/): The IRC air rate for a closed crawl space and the vent area for an open one, a dehumidifier’s yearly cost at the federal efficiency floor and your state’s electricity price, and barrier and dehumidifier prices from three sellers. - [Stair lift cost calculator](https://calculiva.com/project-costs/stair-lift-cost-calculator/): The rail measured from your stair, width and weight checked against published model limits, and the month renting stops being cheaper than buying, with the Medicare and VA HISA rules quoted. - [Metal roof cost calculator](https://calculiva.com/project-costs/metal-roof-cost-calculator/): Keep roof surface, footprint and billed material separate, reconcile six scope lines and compare complete quotes per installed square foot. - [Roof tear-off cost calculator](https://calculiva.com/project-costs/roof-tear-off-cost-calculator/): Whether the IRC lets a new roof go over the old one, the old layers turned into tons from the maker’s weight per square, deck sheets for spaced boards, and each tear-off line priced at your own rates. - [Composite roof cost calculator](https://calculiva.com/project-costs/composite-roof-cost-calculator/): Composition asphalt or synthetic slate: bundles with accessories, weight on the roof, the IRC slope and underlayment rule, and your quotes per square for both. - [Driveway cost calculator](https://calculiva.com/project-costs/driveway-cost-calculator/): The drive measured in zones, two or three paving bids brought to a price per square foot, the lines a bid leaves out, a paver bid’s base and bedding sand read against ICPI Tech Spec 10, and what owners reported spending in 2023. ## Fencing - [Composite fence cost calculator](https://calculiva.com/fencing/composite-fence-cost-calculator/): Sections and posts of each run from Trex’s published drawings, pickets and brackets, the delivery weight from its weight sheet, and your design wind speed set against the lab test of each height. - [Glass pool fence cost calculator](https://calculiva.com/fencing/glass-pool-fence-cost-calculator/): Frameless glass panels and kits counted for your runs at one maker’s prices, then the 48 in height and the gap under the glass, the 4 in sphere, the gate latch and the safety-glazing panes. - [Chain link fence cost calculator](https://calculiva.com/fencing/chain-link-fence-cost-calculator/): Your run and its gates matched to the line, terminal and gate post diameters the CLFMI manual sets, two or three quotes brought to a price per linear foot, the lines a quote leaves out, a pool barrier read against CPSC 362, and what owners reported spending on fences. ## Bathroom Hub: https://calculiva.com/bathroom/ - [Bathroom remodel cost calculator](https://calculiva.com/bathroom/bathroom-remodel-cost-calculator/): Unwrap tiled walls, intersect openings and wet zones, then compare retained fixtures with full-room scope without duplicating shower-package finishes. - [Shower remodel cost calculator](https://calculiva.com/bathroom/shower-remodel-cost-calculator/): The shower measured inside, two or three bids brought to the lines they all state, the glass checked for its CPSC Category II rating, the showerhead against WaterSense and the size against ADA section 608. ## Landscaping & patios Hub: https://calculiva.com/landscaping/ - [Grass seed calculator](https://calculiva.com/landscaping/grass-seed-calculator/): A seeding rate turned into pounds and bags with the purity and germination on your seed tag, bags ranked by price per pound of pure live seed, and a spreader check. - [Pond liner calculator](https://calculiva.com/landscaping/pond-liner-calculator/): The liner sized from the real wall profile with shelves and slopes, matched to published PondGard sizes, seams planned with their overlap, or the largest pond a given liner covers. - [Pine straw calculator](https://calculiva.com/landscaping/pine-straw-calculator/): Beds and tree rings in one order, fresh depth against settled depth, each seller’s bale brought to the same coverage, and the order rounded to bales, boxes or pallets. - [Putting green cost calculator](https://calculiva.com/landscaping/putting-green-cost-calculator/): Green and fringe priced as separate products, turf ordered by roll width, cups, edging and infill on their own lines, and a quote placed among dated published price bands. - [Artificial turf cost calculator](https://calculiva.com/landscaping/artificial-turf-cost-calculator/): Zones laid on real roll widths with offcuts reused, cost on the area you buy rather than the area you cover, and the irrigation water and dollars a synthetic lawn stops using. - [Landscaping cost calculator](https://calculiva.com/landscaping/landscaping-cost-calculator/): Turn three beds or lawn zones into phased whole-package orders for soil, mulch or sod, with shared delivery and installed packages counted once. - [Asphalt calculator](https://calculiva.com/landscaping/asphalt-calculator/): A run, a pad, a flared apron and a turnaround added up, tons split between base and surface courses, the unit weight shown with its source, and the order rounded to truckloads. - [Soil calculator](https://calculiva.com/landscaping/soil-calculator/): Raised beds, a round bed, a lawn topdressing and a low spot in one order: cubic yards, bags read in cubic feet or dry quarts, bags against a delivered yard, and the weight to haul. - [Mulch calculator](https://calculiva.com/landscaping/mulch-calculator/): Beds, tree rings with the trunk left bare and play-set surfacing to the CPSC handbook, the old layer subtracted before topping up, and bags against a delivered yard. - [Sod calculator](https://calculiva.com/landscaping/sod-calculator/): Slabs and rolls laid out in brick rows with the cut ends paired, pallets counted from the piece size, plugs at UF/IFAS spacing, and the topsoil under a new lawn.