Calcul BTP — Takeoffs

Jobsite math without the spreadsheet.

Calcul BTP brings over 100 construction calculators together in one app: quantities, areas, volumes and material takeoffs, straight from your phone. Built for contractors, tradespeople and serious DIY projects.


▪ WORK IN THE UNITS YOU ACTUALLY USE

Enter dimensions in feet and inches — including fractional inches, down to 1/16" — and get results in the units the job runs on: square feet, cubic feet, cubic yards, pounds and short tons. No converting metric values before you can start.

Prefer metric? Switch the whole app over in Settings, any time.


▪ CONCRETE, DRYWALL, PAINT, EXCAVATION AND MORE

Slabs, footings, block walls, rebar weight, formwork, trenches, backfill, aggregate base, asphalt, framing, roofing, drywall and studs, tile, flooring, paint, siding, decking, fencing and more.


▪ BUILT THE WAY THE JOB WORKS

Enter your dimensions, get the quantities immediately, and open the step-by-step math whenever you want to check it.

The calculations follow field practice: weight is figured on bank volume, not on loose volume; hauling accounts for both payload and bed volume; spacing is tightened, never stretched.


▪ TAKE OFF MULTIPLE AREAS

Three walls, two rooms to paint, four trenches: each section gets its own result, then a total that accounts for rounding instead of stacking it up.


▪ TUNED TO YOUR WORK

Tell the app what kind of work you do and the right calculators come first. Nothing is ever hidden from you.


▪ MADE FOR THE JOBSITE

Calcul BTP runs locally on your phone, so your calculators keep working when jobsite signal does not. No account, no sign-up, no ads. Your calculations, history and favorites never leave your device.


▪ FREE AND PRO

Eight general calculators are free, with no time limit. You also pick two trade calculators and keep them free.

Calcul BTP PRO unlocks the entire catalog, every calculator added later, and the accuracy fixes that come from real jobsite feedback. Monthly, yearly or lifetime — all three give exactly the same access.


▪ WHAT CALCUL BTP DOES NOT DO

Calcul BTP is a calculation and estimating aid. Results are estimates: always verify them against actual site conditions, your materials, manufacturer instructions and applicable professional requirements.

The app performs no structural design, no rebar design, no electrical, gas or energy-code calculations, and does not replace an engineer, an architect or a design professional.