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.
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.