Concrete Calculator
Enter length, width and thickness (ft/in) to estimate concrete volume in cubic feet, cubic yards and cubic meters.
Input Data
Results
33.33
1.235
0.944
At a glance:Volume = length × width × thickness, with thickness converted from inches to feet (÷12). 1 cubic yard = 27 cubic feet; 1 cubic foot ≈ 0.0283168 m³.
Formula
ft³ = length × width × (thickness ÷ 12).
yd³ = ft³ ÷ 27.
m³ = ft³ × 0.0283168.
How to Use
- Enter length, width (ft) and thickness (in).
- Get cubic feet, cubic yards and cubic meters instantly.
FAQ
Why cubic yards?
Many Hong Kong and overseas suppliers quote concrete by the cubic yard, so this calculator surfaces cubic yards first.
Should I add waste?
Add about 5–10% for spillage and waste; this calculator reports net volume.
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References
Content reviewed by the Calculatorism editorial team. Results are for reference only; please refer to the relevant authorities for the official figures.