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Concrete Volume & Materials Estimator

Concrete Wall Calculator

Estimate how much concrete you need to pour a wall — including openings for doors and windows, waste allowance, bag count, and total cost.

Wall dimensions

If you have several walls of the same dimensions, set the count here.

Openings (doors / windows)

No openings added. Click "+ Add opening" to subtract a door or window from the wall area.

Recommended 5–10% extra for spillage and over-pour.

Bag size selected above will be used.

Enter your wall dimensions to see how much concrete you need.
Wall area (after openings)
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Total estimated cost
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How is this calculated?

Wall area = length × height, multiplied by the number of identical walls. Then the area of each opening (door/window) is subtracted.

Concrete volume = net wall area × thickness. A waste allowance (10% by default) is added so you order enough.

Bag estimates use standard yields: 40 lb ≈ 0.30 ft³, 60 lb ≈ 0.45 ft³, 80 lb ≈ 0.60 ft³.

Total cost = (concrete or bags × unit price) + labor/delivery + other costs.

Tip: For poured-concrete walls, also budget for formwork and rebar — they can add significantly to the project cost.