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    Construction Calculator API icon
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    Construction Calculator API

    The roofing and construction formulas behind our calculator sites, as a JSON REST API.

    About Construction Calculator API

    The Construction Calculator API exposes the formulas behind smartroofingcalculator.com and the studio's other trade calculators as a REST API: roof area from footprint and pitch, shingle bundles, underlayment rolls, nails, deck boards and joists, fence posts and pickets, drywall sheets, insulation, tile, sod, gravel and concrete. Send JSON, get JSON back, in imperial or metric units. Keys are issued through RapidAPI, which has a free plan for testing and paid plans for higher volume. The developer page on smartroofingcalculator.com lists every endpoint with examples.

    Features

    • ✓65 endpoints: roofing, decking, fencing, drywall, insulation, tile, sod, gravel, concrete
    • ✓JSON in, JSON out; imperial or metric units
    • ✓Same formulas as the studio's calculator websites and apps
    • ✓Free RapidAPI plan for testing, paid plans for volume

    Who it's for

    Developers building contractor quoting tools, estimating software, lead-gen forms and home-improvement apps.

    Frequently asked questions

    How do I get a key?▾

    Subscribe on RapidAPI (rapidapi.com/stefanodixon/api/construction-calculator-api). The Basic plan is free for testing.

    Where is the documentation?▾

    On the developer page at smartroofingcalculator.com/api/ and in the RapidAPI listing.

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