Services
What BuildCalc Pro offers
One platform for construction math: free calculators, a bid workflow, custom tool requests, and guides that explain the numbers.
What we do
Built around the way contractors estimate
Free construction calculators
31 trade calculators concrete, masonry, framing, roofing, finishes, excavation, MEP, and bid math free to use, no account required. Every tool runs entirely in your browser.
Browse all toolsCustom calculator development
Need a calculator that doesn't exist yet? Tell us the inputs, the math, and the output you need. We review every request and build the ones that help the most contractors.
Request a toolProposal & bid workflow
Push any calculator's quantities straight into the Master Bid, apply markup or margin, set a payment schedule, and export a branded proposal PDF still free, still in your browser.
Open the Proposal BuilderContractor estimating guides
Short, practical explainers on the math behind the tools slab takeoffs, block and mortar quantities, roof pitch, stair layout, and markup vs. margin.
Read the guidesEverything is free. No subscriptions, no accounts.
BuildCalc Pro exists to make professional-grade construction math accessible to everyone contractors, estimators, tradespeople, and homeowners alike.