Concrete Footing Calculator

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Estimate the amount of concrete needed for continuous wall footings or individual pad footings. Enter the dimensions of your footing to calculate the volume in cubic yards.

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Enter Your Measurements

Results

Concrete Needed

1.32

cubic yards

With 10% Overage

1.45

cubic yards

Volume

35.6

cubic feet

80 lb Bags

60

bags

Cost Estimate

$

per cubic yard

Estimated Cost

$197.53

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Formula

Cubic Yards = (Length ft × Width in ÷ 12 × Depth in ÷ 12) ÷ 27

How to Use This Calculator

How to Use

  1. 1

    Enter the total length of the footing in feet.

  2. 2

    Enter the width of the footing in inches (typically 12-24 inches).

  3. 3

    Enter the depth of the footing in inches (typically 6-12 inches).

  4. 4

    For multiple footings, calculate each separately and add the results.

Frequently Asked Questions

Frequently Asked Questions

How deep should a concrete footing be?

Footings should extend below the frost line, which varies by region from 12 to 48 inches. Check local building codes for exact requirements.

How wide should footings be?

Footings should be twice as wide as the wall they support. For a standard 8-inch wall, use 16-inch wide footings.
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In-Depth Guides

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About This Calculator

This calculator uses the formula: Cubic Yards = (Length ft × Width in ÷ 12 × Depth in ÷ 12) ÷ 27. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.

Built and maintained by the CalcSmart team. Last updated March 2026.

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