Concrete Takeoffs Done Right.
Professional-grade calculators for slabs, footings, ICF walls, rebar, formwork, and more. Build a detailed estimate in minutes — no account needed.
Concrete Slab
Calculate concrete volume for any rectangular slab
Inputs
Typical: 4" garage, 6" driveway, 8" industrial
Typically 8–12% for slabs
Delivered, inc. PSI spec — leave $0 for volume only
Results
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"+ Add to Estimate"
Professional Concrete Takeoff — Built for the Field
ConcreteSolver is a free professional concrete estimating toolkit designed for contractors, structural engineers, and construction estimators. Every calculator uses standard industry formulas — ASTM A615 rebar weights, standard ICF block dimensions, and verified concrete bag yields — so your takeoffs are accurate and defensible.
Unlike generic online calculators, ConcreteSolver produces transparent, line-item estimates that you can print, share, and reference on site. Every result shows its formula so you can verify and explain every number to a client or project manager.
What Gets Calculated
Slabs
Volume, bags, trucks, waste
Strip & Pad Footings
Volume with compaction
Foundation Walls
Poured concrete, openings
ICF Walls
Block count + core concrete
Rebar
EW mat, wall, footing #3–#8
Wire Mesh
ASTM A185 sheets, weight
Rigid Foam
EPS/XPS/Polyiso R-values
Vapour Barrier
Poly rolls with overlap
Gravel/Subbase
Volume, tons, compaction
Formwork
Panel count, bracing
Labour
Crew hours, burden rates
Markup & Tax
O&P, HST/GST/PST
Frequently Asked Questions
How accurate are these concrete calculations?
Our formulas follow standard engineering practice: volume from L×W×T with configurable waste, bag yields at 60 bags/cu yd (60 lb) and 45 bags/cu yd (80 lb) per QUIKRETE standards, and rebar weights per ASTM A615. Real-world quantities vary due to subgrade tolerances, placement waste, and batch plant ticket rounding — always order 8–12% over calculated net.
What unit system does ConcreteSolver use?
Primary inputs use imperial (feet, inches) as this is standard practice for residential and light commercial construction across Canada and the US. Metric equivalents (m³, m²) are shown alongside all primary results for engineers and public sector work.
Can I save my estimates?
In this MVP release, estimates are session-only. Use the Print / Export PDF button to save your estimate as a PDF document for your records or client delivery. Account-based saved projects are planned for a future release.
Are ICF block counts compatible with major manufacturers?
Yes — the calculator uses the standard 48" × 16" block face (the dominant dimension across Fox Blocks, Logix, Nudura, and BuildBlock). Core widths of 4", 6", 8", 10", and 12" cover the full range of residential and commercial ICF applications.
What compressive strength assumptions are used?
ConcreteSolver calculates concrete volume — strength (MPa/PSI), slump, and mix design are specified on your project's structural drawings and selected with your ready-mix supplier. Always match your concrete specification to the design engineer's requirements.
Is ConcreteSolver free?
Yes — all calculators are free to use without an account. Professional PDF output, project management, and collaborative estimating are planned for future premium tiers.
Professional Disclaimer: All calculations provided by ConcreteSolver are estimates based on standard industry formulas and are intended as a reference tool for planning and budgeting purposes only. Quantities and costs may vary due to site conditions, material pricing, regional labour rates, subgrade variability, design requirements, and other factors outside our control. This tool does not replace the advice of a licensed professional engineer, architect, or certified estimator. ConcreteSolver, ConstructionX Inc., and STEEL Structure Homes Inc. accept no liability for errors, omissions, or decisions made based on outputs from this tool. Verify all quantities independently before procurement or construction.
