Key takeaways
- Multiply length by width by thickness in feet
- Divide by twenty-seven to get cubic yards
- Add a little extra for waste and uneven ground
- The Yardage Calculator does the math for you
A quick estimate helps you plan before anyone visits.
The formula
Measure length and width in feet and thickness in inches. Divide the thickness by twelve to get feet, multiply all three, then divide by twenty-seven to get cubic yards.
Add some extra
Adding five to ten percent covers uneven subgrade, spills and form movement.
Trucks and bags
Small jobs can use bagged mix, and larger ones use a mixer truck. A truck often carries around ten yards.
Use the calculator
The Yardage Calculator on this site shows yards, bags, truck loads and mesh for your slab.
Related
Questions about your own project? Call or text 720-295-9670, or use the estimate form below.