Concrete Calculator
Calculate concrete volume in cubic yards and meters. Find how many 80lb or 60lb bags of concrete you need.
Concrete Calculator
Calculate how much concrete you need for a slab, driveway, or footing. Enter the length, width, and depth to get volume and the number of pre-mix bags required.
How It's Calculated
- Volume = Length × Width × Depth
- 1 cubic yard ≈ 0.765 cubic meters
- One 80 lb bag yields approximately 0.6 cubic feet (0.017 cubic yards)
- One 60 lb bag yields approximately 0.45 cubic feet (0.013 cubic yards)
Frequently Asked Questions
Should I order extra concrete?
Yes, always order 5–10% more than calculated to account for spillage, slight variations in depth, and uneven subgrade.
How deep should a concrete slab be?
Standard residential slabs are 4 inches for patios, 6 inches for driveways, and 8–12 inches for footings.