Browse ready-made footing size pages for common rectangular and round footings. Compare volume, ready-mix totals, and bag estimates, then use the calculator only when your footing dimensions or count need custom changes.
Open the calculator when you need to change footing count, custom dimensions, or waste assumptions beyond the ready-made size pages.
Footing Calculator → All Project Pages → Guides Hub →Use this hub to browse common footing sizes, compare concrete volume quickly, and open ready-made pages that estimate cubic feet, cubic yards, and bag counts for each footing. It is built for fast planning when you want a size-based estimate without starting from scratch.
If you already know the footing dimensions, open the closest matching size page. If you need to adjust dimensions, footing count, or waste allowance, move to the footing calculator for a custom estimate.
Select a common footing size to filter pages instantly.
Concrete volume and bag planning for a 36" round Sonotube footing, 36" deep. Exact volume 21.2058 cu ft (0.7854 yd³) plus 10% waste planning totals and bag counts.
Exact and waste-adjusted concrete for a 36" round Sonotube footing, 48" deep: volumes in cubic feet and yards plus bag counts for 40 lb, 60 lb, and 80 lb mixes.
Exact volume (3.5343 cu ft / 0.1309 yd³) and bag counts for an 18-inch round Sonotube footing 24 inches deep, plus a 10% waste planning allowance for ordering.
Quick concrete numbers for an 18" round Sonotube footing 36" deep: exact volume 5.3014 cu ft (0.1963 yd³), exact bag counts, plus 10% waste planning totals.
Exact volume and bag counts for an 8" diameter by 24" deep round footing. Shows cubic feet, cubic yards, and planning quantities with a 10% waste allowance.
Exact and planning quantities for an 8" round Sonotube footing 36" deep: cubic feet, cubic yards, exact bag counts, and a 10% waste-adjusted ordering figure.
Exact and planning amounts for an 8" diameter × 48" deep round footing: 1.3963 cu ft (0.0517 yd3), exact bag counts, and a 10% waste-adjusted plan.
A footing page gives you a ready-made estimate for a common footing size, while the footing calculator is better when you need to change dimensions, footing count, or waste assumptions.
No. They are planning estimates. Final material needs can change with excavation shape, overdig, soil conditions, and the actual bag yield printed on the concrete mix you buy.
Bagged concrete often makes sense for one or a few smaller footings. As the number of footings and total volume rise, ready-mix may become more practical for labor, consistency, and total time.
The pages are designed for planning. You should still review the final total and add a sensible waste allowance based on excavation variation, spillage, and site conditions before ordering concrete.
Yes. They are useful as quick planning pages for common residential footing sizes, but final footing dimensions and depth still need to match the structural load, soil conditions, frost depth, and local code.
