Concrete Calculator
Calculate how much concrete you need in cubic yards and bags.
Concrete Needed
1.48 cubic yards (about 67 bags of 80lb mix)
How This Works
Volume = Length × Width × Depth. 1 cubic yard = 27 cubic feet. About 45 bags of 80lb pre-mix concrete per cubic yard.
Always buy 5-10% extra to account for waste and uneven surfaces.
Frequently Asked Questions
How much do I need for 10ft × 12ft at 4.0in deep?
1.48 cubic yards (about 67 bags of 80lb mix).