Enter the slab or footing dimensions and get cubic yards, cubic feet, and how many bags of ready-mix you'll need -- no account required.
Bag counts use the standard published yield for each bag size (0.60 ft³ for an 80 lb bag, 0.45 ft³ for 60 lb, 0.30 ft³ for 40 lb). Ready-mix delivered by the truck is almost always cheaper than bags once you're past about 1 cubic yard -- use this to decide which way to go.
← All free calculatorsCompare your own numbers against a real quote before you decide.
Hiring this out instead? Find a concrete contractor →SchoHome is a software platform, not the actor. We provide tools and connections only.
You are responsible for your decisions, actions, and interactions on this platform. We do not guarantee outcomes, performance, safety, or results.
Every user-created save must be marked Private or Public. Private saves are hidden from other users, but authorized SchoHome administrators may access them to operate, support, secure, or moderate the service.
Always verify information independently and use licensed professionals where required.
By clicking I Agree, you accept our Terms of Service and Privacy Policy.
AI outputs may be inaccurate. Contractor "Verified" status is admin-reviewed, not independently certified. Always verify with licensed professionals.