Answers "how many bags of concrete do I need?" for slabs, footings and post holes.
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Home & DIY Calculators
Material and project calculators for homeowners and DIYers. Ten tools are live — each ships with its formula, worked examples and an FAQ, following the same template as the concrete calculator. More are added weekly.
Concrete & masonry
Ready-mix cubic yards and cost for slabs, footings and columns.
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Cubic yards and tons for driveways, paths and slab bases.
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Tons and 50 lb bags for bases, sandboxes, pools and masonry.
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Yard & landscape
Bags and cubic yards by bed size and depth, with bag-vs-bulk costs.
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Pavers plus base gravel and bedding sand for patios and paths.
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Interior projects
4×8, 4×10 and 4×12 sheet counts for walls and ceilings, by room.
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How much tile for a shower — walls, floor, tiles and boxes.
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BTU sizing for AC and garage heaters, corrected for insulation and climate.
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Lumber & comfort
Board feet and lumber cost from board dimensions and price per board foot.
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Tools follow the Phase-0 cluster research: queries were chosen because real people type them (they appear in Google's own suggestions) and because the pages currently ranking for them are mostly small independent tools — questions a careful new calculator can genuinely answer better.