Concrete Calculator: Cubic Yards for Slabs & Pads

🔗 Open the full-page Concrete Calculator

Order the right amount

Whether you are pouring a small pad or estimating ready-mix for a patio, volume in cubic yards is how suppliers quote concrete. This tool converts length × width (feet) and thickness (inches) into cubic feet and cubic yards so you can add a sensible waste factor before ordering.

Bag mixes

For minor repairs, the calculator also estimates 80 lb pre-mix bags using a common rule-of-thumb volume per bag. Check the manufacturer’s yield on the bag; structural work should follow engineered specs.

Safety

Large pours, reinforcement, and load-bearing designs require professional engineering. This page is for estimation and education only.