Concrete Footing Calculators
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Concrete Footing Calculators

Use these concrete footing calculators to estimate footing volume, cost, size, deck footings, wall footings, and slab footings. Check cubic yards, material needs, and early project quantities before ordering concrete.

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All concrete footing calculator tools

Choose the concrete footing calculator that matches your project. Estimate concrete for basic footings, footing cost, footing size, deck footings, wall footings, and slab footing details.

Concrete Footing Calculator

Estimate concrete volume for strip footings, pad footings, and basic footing pours using length, width, depth, and waste allowance.

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Concrete Footing Cost Calculator

Estimate footing cost from concrete quantity, waste, ready mix price, labor, and other basic project cost inputs.

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Concrete Footing Size Calculator

Check early footing width and depth needs based on load type, soil bearing assumptions, and common footing planning rules.

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Concrete Deck Footing Calculator

Estimate concrete for deck footings, post bases, round piers, and support holes using diameter, depth, and quantity.

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Concrete Wall Footing Calculator

Estimate concrete volume for continuous wall footings under block walls, retaining walls, stem walls, and foundation walls.

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Concrete Slab Footing Calculator

Estimate concrete for slab footings, thickened slab edges, perimeter footings, and slab support sections.

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Footing calculator guide

Which footing calculator should I use?

Choose the concrete footing calculator that matches the work you need to check. Use the main footing tool for volume, the cost tool for pricing, and the size or project-specific tools for deck, wall, and slab footing planning.

Need Recommended tool Why
Basic footing volume in cubic yards Concrete Footing Calculator Best for finding footing concrete from length, width, depth, quantity, and waste.
Footing price and project cost Concrete Footing Cost Calculator Use this when you need material cost, ready mix cost, labor allowance, or a quick budget range.
Footing width and depth planning Concrete Footing Size Calculator Good for early footing size checks before final design, soil review, or permit work.
Deck post or pier footings Concrete Deck Footing Calculator Helps estimate round or square deck footings by diameter or size, depth, and number of holes.
Continuous footing under a wall Concrete Wall Footing Calculator Use this for strip footings below block walls, retaining walls, stem walls, or foundation walls.
Slab edge or thickened footing Concrete Slab Footing Calculator Useful when a slab has a thicker edge, perimeter footing, or support beam built into the pour.

What is a concrete footing calculator?

A concrete footing calculator helps estimate concrete quantity for the base that supports walls, posts, decks, slabs, and foundations. Most footing estimates use length, width, and depth. Round deck footings use diameter and depth. These tools help plan cubic yards, cubic feet, bag counts, waste, and cost before concrete is ordered. Final footing size should still follow local code, soil bearing needs, frost depth, and a qualified design when the structure requires it.

Common concrete footing calculator use cases

Foundation footings

Estimate concrete for continuous footings, pad footings, and support bases below foundation walls.

Deck footings

Plan concrete for deck posts, porch posts, round piers, and multiple support holes.

Wall footings

Estimate concrete for wall support under block walls, stem walls, retaining walls, and perimeter walls.

Slab footings

Check thickened slab edges, edge beams, perimeter footings, and slab support sections.

Concrete footing calculator FAQs

How do I calculate concrete for a footing?
For a rectangular footing, multiply length by width by depth. Convert the result to cubic feet, then divide by 27 to get cubic yards. For a round footing, use π × radius² × depth × quantity.
What size should a concrete footing be?
Footing size depends on the load, soil bearing value, frost depth, footing type, and local building code. Use the concrete footing size calculator for an early planning check, then confirm the final size with a qualified person.
How deep should concrete footings be?
Footings often need to reach firm soil and may need to extend below the local frost line. Depth rules change by location and project type, so always check local code before pouring.
Which calculator should I use for deck footings?
Use the concrete deck footing calculator. It is built for post footings, round piers, pier diameter, footing depth, and the number of deck support holes.
Should I add waste to a footing estimate?
Yes. A 5% to 10% waste allowance is common for many footing pours. Uneven excavation, loose soil, overdig, and complex forms can require more concrete.
Does a footing calculator include rebar?
These footing calculators focus on concrete volume, size, and cost. Rebar needs depend on the structural design, local code, soil, loads, and footing type.
Does this replace an engineer or building code?
No. These tools provide estimates for planning. Footing design, bearing capacity, reinforcement, frost depth, and code approval should be checked by a qualified contractor, engineer, or local authority.