Concrete Calculator
Calculate concrete volume needed for a project
Shape
ft
ft
in
What is Concrete Calculator?
The Concrete Calculator estimates the volume of concrete needed for slabs, footings, columns, and walls. Enter your dimensions and get precise results in cubic yards, cubic meters, and number of bags needed.
How to use
- Step 1 — Select the shape type: slab/square footing, cylindrical column, or wall/footer.
- Step 2 — Enter length, width, and depth (or diameter and height for columns) in your preferred unit.
- Step 3 — View the calculated volume in cubic yards and cubic meters, plus the estimated number of concrete bags.
Result
A homeowner building a 10ft × 12ft patio at 4 inches thick enters the dimensions and gets 1.48 cubic yards — approximately 30 bags of 80-lb concrete mix.
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