calculiva.com

# 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

## Flooring

Hub: https://calculiva.com/flooring/

- [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.
- [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 tile calculator](https://calculiva.com/tile/wall-tile-calculator/): Position a tiled 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 calculator](https://calculiva.com/tile/ceiling-tile-calculator/): Compare panel orientations and border widths, reserve full-module lighting cells, and export the remaining panel cuts and carton order.
- [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.

## 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/

- [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

- [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

- [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 sand read against ICPI Tech Spec 10, and what owners reported spending in 2023.

## Fencing

- [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

- [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/

- [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.