Estimate the concrete volume needed for strip footings or spread (pad) footings — enter your footing dimensions and how many you need.
Strip footings run continuously under load-bearing walls, while spread (pad) footings are individual, isolated pads that support single columns or posts.
Depth depends on your local frost line and soil-bearing capacity — often 12–24 inches for residential work, but always check local building codes.
Most footings require reinforcement steel — use the Rebar Calculator or Steel Weight Calculator alongside this one, and confirm sizing with an engineer.