Home & Renovation Calculators

Project planning for construction, renovation, and home improvement — materials, cost, and time estimates.

Concrete Calculator — Yards & Bags for a Slab

A 10 ft × 10 ft slab, 4 in thick, needs 33.3 cubic feet — 1.23 cubic yards. With a 10% waste buffer that is about 1.4 yards of ready-mix, or 62 80-lb bags if you are mixing by bag. Enter your own dimensions for an exact count.