Should I order extra concrete beyond the calculated amount?

Yes, most contractors add 5-10% extra to account for spillage, form irregularities, and uneven ground, especially for smaller pours where a shortfall means an extra costly delivery.

Does this include the footing below the wall?

No, this only calculates the wall stem itself. Calculate the footing volume separately using its own length, width, and depth, then add both volumes together.

Retaining Wall Concrete Calculator

Calculate the cubic yards of concrete needed for a poured concrete retaining wall based on its length, height, and thickness — the three dimensions that determine total concrete volume.

Inputs

Results

Concrete Needed: 3.33 cu. yd

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Formula

Volume (cu. yd) = (Length × Height × Thickness in feet) / 27

Learn How This Works

Foundation and Sitework Estimates: Footings, Excavation, and Paving

How to estimate concrete footings, excavation volume, retaining wall concrete, and asphalt driveway tonnage before groundwork begins.

Frequently Asked Questions

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