Calculate exactly how much concrete you need in cubic yards for ready-mix orders or number of bags for any slab, footing, column, or step.
How it works
- Enter the length and width of the pour area in feet.
- Enter the required depth in inches.
- Review the precise calculation of total cubic yards and required bag count.
Frequently asked questions
How do I order ready-mix?
Ready-mix is ordered in cubic yards. Always add 10% to your calculated volume for waste and spillage.
Which bag size is better?
For large pours, 80 lb bags are more efficient. For small jobs or hand mixing, 60 lb bags are easier.
What is minimum slab thickness?
Typical residential slabs are 4 inches. Driveways need 4-6 inches; footings depend on local frost depth and load.