Calculate concrete volume needed for slabs, columns, and footings.
10×10 ft slab, 4 inches thick
Common Questions
Our concrete calculator handles slabs, footings, columns, and fence posts in both imperial and metric units. It shows cubic yards, cubic feet, number of bags, and estimated ready-mix cost.
Multiply length (ft) × width (ft) × thickness (in feet). A 10×10 ft slab at 4 inches thick = 10 × 10 × 0.333 = 33.3 cubic feet ÷ 27 = 1.23 cubic yards. Always add 5-10% for waste and spillage.
For small jobs under 1 cubic yard, pre-mixed bags are cost-effective and convenient. For larger pours, ready-mix delivered by truck is more economical at $125-175/yard. The break-even is typically around 1-2 yards.
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