Concrete Calculator
Estimate ready-mix volume for slabs, footings, and round columns, then convert that volume into cubic yards, cubic meters, or bag counts for smaller jobs.
Pour Dimensions
Choose a shape and enter the project dimensions in feet and inches.
%
Concrete Estimate
Order in cubic yards for ready-mix or use the bag counts for smaller pours.
Cubic yards
3.20
Cubic feet
86.40
Cubic meters
2.45
Bag count
145 x 80 lb
192 x 60 lb bags
Ordering tip
Short pours are more painful than small overages.
For slabs and footings, a waste allowance of 5% to 10% is common. Complex forms or hard-to-access sites may justify more.
For ready-mix orders, round your cubic-yard result up with your supplier rather than down.