Planning notes
Concrete Bag vs Ready-Mix Calculator questions
How many 80 lb bags are in one cubic yard?
An 80 lb concrete bag yields about 0.6 cubic feet, so one cubic yard takes about 45 bags before waste.
When should I order ready-mix?
Ready-mix often becomes more practical around 1 cubic yard or more, especially when time and labor matter.
How thick should a slab be?
Many patios and walkways use 4 inches. Driveways, garages, and structural work need project-specific guidance.
Before you buy
Use this estimate as a planning starting point. Product coverage, waste, local prices, code rules, and site conditions can change the final amount.