Construction

Concrete Weight Calculator

Estimate how much a concrete slab, footing or block weighs.

Length

Width

Thickness

Density (lb/ft³)

Calculated Output

Weight 5,000

Weight 2.5

Weight 2,267.96

Formula: weight = volume (ft³) × density (lb/ft³)

Step-by-Step Breakdown

1. Values used:

2. Length = 10

3. Width = 10

4. Thickness = 4

5. Density = 150 lb/ft³

7. Weight = 5,000

8. Weight = 2.5

9. Weight = 2,267.96

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The math behind it

volume = length × width × thickness (thickness converted to feet).

weight = volume × density (≈150 lb/ft³ for normal concrete).

A 10×10 ft slab, 4 in thick → 33.3 ft³ × 150 = 5,000 lb (2.5 tons).

How much does a yard of concrete weigh?

About 4,050 lb (≈2 tons) for normal-weight concrete.