Concrete · 9 min read
Concrete Slab Calculator: How Much Concrete Do You Need?
Calculate cubic yards, m³, pre-mixed bags and ready-mix cost for any slab, pad, patio or garage floor—with the full step-by-step math.
Free calculators · US · UK · AU · NZ
Construction calculators that show their math.
Plain-English estimating guides with live calculators for concrete slabs, CMU block walls, Sonotube footings, rebar grids and driveways—so you order the right amount the first time.
- 5 live toolsslabs · blocks · piers · rebar · cost
- ft · yd³ · m³US imperial & UK/AU/NZ metric
- 0 sign-ups100% browser-side, no email wall
Jump straight to a calculator
ConcreteConcrete Slab CalculatorV = L × W × T · yards · m³ · bagsMasonryConcrete Block Wall CalculatorBlocks = Net Area × 1.125 · mortar · core groutConcreteFooting & Sonotube Concrete CalculatorV = π × (D ÷ 2)² × H · piers · post holes · strip footingsReinforcementConcrete Slab Rebar CalculatorRuns = ⌊(Span − 2×Cover) ÷ Spacing⌋ + 1 · 40d lapsCost & PricingConcrete Driveway Cost CalculatorCost = Area × Finish Rate + Base + Steel + Tear-Out
Pillar guide
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Masonry · 8 min read
Concrete Block Wall Calculator: Cinder Block, CMU, Mortar & Grout
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Concrete · 8 min read
Footing & Sonotube Concrete Calculator: Piers, Post Holes & Strip Footings
Size round Sonotube deck piers, fence post holes (with buried post volume deducted) and continuous strip footings in yards, m³ and bags.
Reinforcement · 8 min read
Concrete Slab Rebar Calculator: Grid Spacing, Bar Count & Laps
Turn slab dimensions and on-center spacing into exact 20-ft or 6-m stock bar counts, including edge cover, 40d lap splices, ties and chairs.
Cost & Pricing · 9 min read
Concrete Driveway Cost Calculator: Installed Price, Volume & Sub-Base
Compare turnkey contractor cost ranges (broom, exposed aggregate, stamped), ready-mix yardage and gravel sub-base tonnage for any driveway.
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