Concrete wall volume starts with gross wall area × wall thickness, then subtracts openings that actually remove concrete. Footings, pilasters, thickened zones, bond beams, and other geometry should be calculated separately when their dimensions differ.
Concrete wall volume = gross wall area × wall thickness minus the volume of true openings that fully displace concrete. Calculate footings, pilasters, thickened zones, and other different geometry as separate add-ons.
Published: September 29, 2026
Last reviewed: September 29, 2026
Published by BuildYard. The guide reflects BuildYard's calculation methodology and editorial standards and does not replace project-specific professional advice.
Gross wall area = wall length × wall height; gross volume = gross area × wall thickness.
Convert inches of wall thickness to feet before multiplying.
Opening volume = opening width × opening height × wall thickness for doors, windows, sleeves, or other voids that fully displace wall concrete.
Do not subtract embedded items that remain within the concrete unless project quantity practice specifically treats them as voids.
Calculate pilasters, buttresses, thickened sections, steps, and returns as separate add-on volumes when needed.
Keep footing and slab concrete on their own takeoff lines to avoid double counting.
Net cubic yards = net cubic feet ÷ 27.
Apply any ordering allowance after the net wall geometry is complete and verify placement sequence and formwork constraints separately.
Concrete Calculator estimates ready-mix concrete, bag mix, weight, and truck loads for general slabs, pads, walls, and rectangular pours.
Open calculator →FoundationsFoundation Calculator estimates concrete for foundation wall or footing runs for early continuous-foundation material planning.
Open calculator →Calculate concrete for rectangular columns, round piers, and cylindrical form tubes from cross-sectional area, height, and quantity.
Read guide →ConcreteCalculate strip-footing or isolated-footing concrete from footing length, width, depth, and count, then convert the total volume to cubic yards.
Read guide →ConcreteEstimate rebar linear feet from slab dimensions, bar spacing, edge cover, grid direction, lap lengths, stock lengths, and waste.
Read guide →Illustrative wall-volume example; subtract only openings that truly remove concrete from the wall.
| Step | Calculation | Result |
|---|---|---|
| Gross wall | 60×8×(8÷12) | 320.0 cu ft |
| Opening | 3×7×(8÷12) | 14.0 cu ft |
| Net wall | 320−14 | 306.0 cu ft |
| Cubic yards | 306÷27 | 11.33 yd³ |
Current manufacturer data, supplier specifications, drawings, field measurements, applicable codes, permit requirements, and qualified professional guidance can take priority over a general-purpose planning estimate.