Construction Calculators
Use free construction calculators for concrete, rebar, roofing, excavation, foundation, flooring, drywall, tile, paint, gravel, asphalt and material cost.
Concrete & Structure
7 toolsSite Work
4 toolsSurfaces & Finishes
6 toolsOutdoor & Estimating
3 toolsWhy Use DailyToolsAI
Accurate Calculations
Industry-standard formulas for volume, area, weight and counts — the same math estimators use, applied consistently every time.
Engineering Drawings
Every calculator renders a live cross-section or plan that updates with your inputs, so you can sanity-check the geometry at a glance.
PDF Reports
Export a branded, dated report with inputs, results, the drawing and a cost breakdown — ready to attach to a quote or a permit set.
Mobile Friendly
Built mobile-first so the full toolset works on a phone in the field, not just at the desk. No app, no install.
Cost Estimation
Add material, labour and equipment prices in multiple currencies to turn quantities into a real project budget on the spot.
Free & Private
Every calculator is free with no account, and runs in your browser so the figures you enter stay on your device.
Three steps to your estimate
Enter dimensions
Type the lengths, widths, depths or areas for your job — mix feet, inches, metres and more freely.
Calculate instantly
Get quantities, volumes, weights and counts the moment you calculate, with a wastage allowance applied.
Review or export
Check the live drawing, then download a branded PDF report with an optional cost breakdown.
Frequently asked questions
Yes — every calculator is completely free, with no paywall, trial limit or usage cap. Run as many estimates as you need.
No. There's no sign-up, login or email gate — open any calculator and start estimating instantly.
Each tool uses standard estimating formulas for volume, area, weight and material counts, with a configurable wastage allowance. Results are reliable for planning and ordering, but they're estimates — confirm final structural quantities against engineered drawings and local code.
Yes. Calculators can generate a clean PDF report with your inputs, results, the engineering drawing and an optional cost breakdown — dated and ready to attach to a quote or file with a permit set.
Yes. The whole suite is built mobile-first and fully responsive, so every calculator, drawing and PDF export works on a phone or tablet in the field.
Construction Calculators for Contractors, Builders and Homeowners
Accurate quantities are the foundation of any well-run job. Whether you're pouring a slab, framing a wall, sizing a roof or pricing a whole build, putting the numbers in front of you turns a guess into a documented takeoff. This suite brings the common calculations together in one place — free, and without an account.
Concrete & structure — concrete, foundation, rebar, steel weight, concrete block, brick and lumber — cover the load-bearing parts of a build, returning volumes, bag counts, bar weights and member quantities you can order against directly.
Site work — excavation, gravel, asphalt and paver — handle the groundworks, from cut-and-fill volume to base tonnage and surfacing area, so you can plan haulage and material deliveries.
Surfaces, finishes and estimating — roofing, drywall, flooring, tile, paint, plaster, fence, deck and the material cost estimator — take you from the building envelope through to finishes, then tie the quantities and unit prices into a single project budget. Each tool is simple on its own, yet consistent enough that learning one means you already know how to use the rest.