Calculate the number of rebar sticks needed for a concrete slab reinforcement grid. Enter the slab length, width, and bar spacing to get total linear feet, stick count, and estimated weight for ordering from your supplier.
Standard residential driveways use #4 rebar at 12-inch spacing in a grid pattern. Patios use #3 or #4 bar at 18-inch spacing. This calculator handles both directions of the grid automatically.