Four shape modes (slab, footing, column, post hole), adjustable waste factor, bag counts for 80lb and 60lb mix, optional cost estimate, saveable URL, dark mode. All in one fast single-page tool.
Built this after spending way too long trying to figure out how many bags I needed for a patio. Now it calculates cubic yards, bag counts, and cost in seconds. Supports slabs, footings, columns, and post holes. Free forever.
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