Poured walls are a volume problem
A solid concrete wall is length × height × thickness, minus openings, plus waste for spillage and over-excavation. There is no block face to divide by. If you are stacking CMU, use the cinder block or concrete block wall calculators instead.
Typical thicknesses
Foundation and retaining walls are often specified in inches (for example 8 in or 10 in). Enter the structural thickness from the drawings, not an architectural finish thickness, unless that is what you are pouring.
What this does not do
It does not design reinforcement, formwork, or mix. Volume with a waste allowance is only a material takeoff. Have the pour reviewed against the project specifications. OSHA’s cast-in-place concrete requirements (opens in a new tab) cover formwork, shoring, and placement on site.
Looking for the full estimator with wall diagram and openings? Use the cinder block calculator.