Construction calculator
Add, subtract, multiply, and divide mixed feet, inches, and fractions without translating the work into decimals first.
Exact dimensional math normalizes to 1/256 inch base units.
Construction math that talks like your tape.
Calculate in feet, inches, and fractions, move through trade estimates, measure and inspect, then save the result with the job context that makes it useful.

Type what the tape says. Get a cut-ready answer.
Add, subtract, multiply, and divide mixed feet, inches, and fractions without translating the work into decimals first.
Exact dimensional math normalizes to 1/256 inch base units.
Work through stairs, rafters, concrete, framing, drywall, masonry, circles, polygons, square-up, and 3D shapes with visual outputs.
Ten calculators, with diagrams and cut-ready units.
Use the level, AR tape, inspector, sound meter, stud finder, markup, converter, and topography tools without leaving the app.
Nine tool categories in one field-readable interface.
Keep readings with notes, photos, timestamps, and optional location, then export a branded PDF, PNG, cut list, or backup.
Local ledger, bilingual exports, and no account required.




Core work happens on the device. There is no account required for job records, no advertising SDK, and no cloud failover for tool results. Sharing happens when you choose it.
Read the product privacy policy →Plumb provides field estimates and documentation aids. Verify cuts, structural work, code compliance, surveying, and safety-critical decisions with calibrated equipment and qualified judgment.
Read the terms and limitations →Support, store availability, and privacy requests, answered directly.