14 interactive concrete calculators with live visualizers · 10 pre-solved reference pages. Eagle-eyed accuracy for every calculation.
14
INTERACTIVE
10
REFERENCE PAGES
100%
ALWAYS FREE
Cement Render Calculator
Calculate cement and sand for rendering or plastering. Separate mixes per coat, door and w...
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Concrete Bags Calculator
Calculate how many 40, 60, 80 or 90 lb bags of concrete you need for any slab, footing, or...
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Concrete Driveway Calculator
Calculate concrete for any driveway in cubic yards or cubic metres. Includes 10% waste, re...
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Concrete Footing Volume Calculator
Calculate concrete volume for rectangular or round (Sonotube) footings. Supports multiple ...
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Concrete Mix Ratio Calculator
Calculate cement bags, sand, aggregate and water for any concrete mix ratio. Supports M5 t...
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Concrete Path Calculator
Calculate concrete for a path or walkway, plus sub-base with its compaction allowance, edg...
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Concrete Patio Calculator
Calculate concrete for any patio in cubic yards or cubic metres. Includes 10% waste, mater...
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Concrete Slab Volume Calculator
Calculate concrete volume for any slab in cubic yards, cubic feet or cubic metres. Include...
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Concrete Steps Calculator
Calculate concrete for steps using exact staircase geometry, not the wedge shortcut. Bags,...
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Concrete Wall Volume Calculator
Calculate concrete for a cast wall including the strip footing and opening deductions at f...
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Pool Deck Concrete Calculator
Calculate concrete for a pool deck. Ring geometry subtracts the pool automatically, with s...
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Post Hole Concrete Calculator
Work out how many bags of concrete you need per post hole. Deducts the post and gravel bas...
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Ready-Mix Concrete Cost Calculator
Work out what ready-mix concrete really costs: delivery, short-load surcharge, waiting tim...
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Rebar Quantity Calculator
Calculate rebar for a slab: bar counts both directions, lap splices, lengths to order, tot...
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Each page below is a pre-solved answer page — no input needed. Every result is verified, includes a detailed breakdown, key facts, and an FAQ. Great for quick lookups and reference.
Every EagleCalculator concrete calculator includes a live real-time visualizer that updates on every keystroke, a full worked example with verified math, and a complete FAQ section. All formulas are verified against official sources. Results are for informational purposes only.
Last updated: July 27, 2026 · 14 interactive + 10 reference pages live · Auto-updates as new calculators are added · Eagle-eyed accuracy for every calculation.