Free
Calculiva
60+ free calculators for flooring, tile, wallpaper, trim, landscaping and project costs, each showing the source and check date of its numbers.
Pricing
Free
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Directory
ThisTool
About Calculiva
Calculiva is a free website of more than 60 calculators for residential finish work and home projects, built for the person who is about to buy material or read a contractor's quote. It covers flooring, tile and grout, wall paneling and trim, wallpaper, curtains, landscaping, insulation, windows, fencing, pools and project costs. There is no account to create and no paywall, and many of the results export to CSV.
The material calculators start from your own room or yard measurements and return what you actually bring home from the store: whole cartons of flooring, rolls of wallpaper, stock lengths of trim, bags of mulch, pieces and pallets of sod. The flooring, tile, paneling and wallpaper tools also draw the layout and list every cut, so you can see where the waste comes from instead of trusting a flat 10 percent.
The project cost calculators work the other way round. You enter the prices from the quotes you received, and the tool shows what each price covers, which measured quantity it multiplies and what work is still outside the subtotal. Many of them also run the code questions that change the job before it is priced, such as whether a carport needs a permit, whether an above-ground pool wall can count as its own barrier, or how tall a chimney must stand above the roof under the model residential code. Many cost pages also place your figure next to owner-reported spending from the 2023 American Housing Survey.
Every constant used by the tools, from a carton's coverage to a code clearance, is listed on a public data sources page with its origin and the date it was last checked. The register can also be downloaded as CSV or JSON from the same page. The plank waste study produced by the flooring engine is published as an open dataset with a DOI on Harvard Dataverse.
Garden centers and suppliers can embed the mulch, soil, sod, tile and wallpaper calculators on their own pages for free, and the cut planner is also available to AI assistants through an MCP server published on npm. Calculiva is published by Les Créavores, an independent publisher, and works in US units for US projects.
The material calculators start from your own room or yard measurements and return what you actually bring home from the store: whole cartons of flooring, rolls of wallpaper, stock lengths of trim, bags of mulch, pieces and pallets of sod. The flooring, tile, paneling and wallpaper tools also draw the layout and list every cut, so you can see where the waste comes from instead of trusting a flat 10 percent.
The project cost calculators work the other way round. You enter the prices from the quotes you received, and the tool shows what each price covers, which measured quantity it multiplies and what work is still outside the subtotal. Many of them also run the code questions that change the job before it is priced, such as whether a carport needs a permit, whether an above-ground pool wall can count as its own barrier, or how tall a chimney must stand above the roof under the model residential code. Many cost pages also place your figure next to owner-reported spending from the 2023 American Housing Survey.
Every constant used by the tools, from a carton's coverage to a code clearance, is listed on a public data sources page with its origin and the date it was last checked. The register can also be downloaded as CSV or JSON from the same page. The plank waste study produced by the flooring engine is published as an open dataset with a DOI on Harvard Dataverse.
Garden centers and suppliers can embed the mulch, soil, sod, tile and wallpaper calculators on their own pages for free, and the cut planner is also available to AI assistants through an MCP server published on npm. Calculiva is published by Les Créavores, an independent publisher, and works in US units for US projects.
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Try Calculiva
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