0 ft
0 ft
4 in
Concrete (cu yd)
0
80lb Bags
0
How this is calculated
Volume = Length × Width × Thickness. We convert thickness from inches to feet, calculate cubic feet, then convert to cubic yards (÷27) and round up to the nearest quarter yard. Bags are estimated at one 80 lb bag per 0.6 cubic feet.
FAQ
How many bags do I need?
About one 80 lb bag per 0.6 cubic feet — roughly 45 bags per cubic yard.
How thick should my slab be?
Typically 4 inches for patios and walkways; 5-6 inches for driveways.
Should I order extra?
Yes — this calculator already rounds up to the nearest quarter yard.