Concrete Calculator
Calculate the concrete volume needed for a slab or footing.
What this calculator does
Enter the slab's length, width and thickness to calculate the volume of concrete you need, plus an estimated bag count.
How to use it
- Enter the slab length and width in feet.
- Enter the slab thickness in inches (4 inches is standard for many projects).
- Press Calculate to see cubic yards, cubic feet and estimated 80 lb bags.
Cubic yards0
Cubic feet0
80 lb bags (approx.)0
Frequently asked questions
What thickness should I use for a slab?
Standard residential slabs are commonly 4 inches (10 cm) thick, but check local building requirements for your project.