Key takeaways
- Multiply length, width and thickness in feet
- Divide cubic feet by twenty-seven for yards
- Add a little extra for waste and uneven ground
- The Yard Calculator does the math for you
Ordering the right amount of concrete takes a little arithmetic.
The formula
Multiply the length, the width and the thickness, all in feet, to get cubic feet. Divide by twenty-seven to get cubic yards.
Add some extra
Ground is never perfectly flat and some concrete is lost, so many people order about five to ten percent more.
Try it
The Yard Calculator draws the slab, works out yards and trucks and shows bag counts for small jobs.
Related services
Questions about your own property? Call or text 800-224-9245, or use the estimate form below.