Concrete Foundation Wall Calculator
Enter your size to get concrete foundation wall quantity, plus an estimated cost. Waste is included and prices are editable.
Material needed
Estimated cost
This result means the shown cubic yards already include waste, so that is the amount to buy for the foundation wall, and the exact volume beside it shows the amount before waste was added.
How to calculate concrete foundation wall
A concrete foundation wall. Enter length, height and thickness to get cubic yards.
Formula: volume = length × width × (thickness ÷ 12) ÷ 27 = 1.23 cubic yards. With 10% waste: 1.36 cubic yards.
Worked example
Example: 10 ft × 10 ft at 4 inches thick = 1.23 cubic yards. With 10% waste: 1.36 cubic yards, about $204 at $150 per cubic yard.
Tips
Measure the full area, then subtract large openings if you want an exact count. Order a little extra for cuts and breakage, and confirm quantities with your supplier before you buy.
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Frequently asked questions
How much concrete foundation wall do I need?
Example: 10 ft × 10 ft at 4 inches thick = 1.23 cubic yards. With 10% waste: 1.36 cubic yards, about $204 at $150 per cubic yard.
How much waste should I add?
Add 10% for straight areas and 15% for areas with many cuts, corners and openings.
Are the prices accurate?
Prices are editable estimates. The defaults are typical US figures, and your local price can be higher or lower.