Concrete, Aggregate, and Masonry Calculators. Each calculator provides an exact amount and a recommended order amount to account for forms bending, over excavation, forms bending, etc.Individual calculators for: Concrete Slab Calculator. Concrete Footing Calculator. Concrete Wall Calculator. Concrete Steps Calculator. Concrete Curb Calculator. Concrete Column / Cylinder Calculator. Sand, Gravel and Stone Calculator. Concrete Block Fill Calculator. Concrete Block and Mortar Calculator. Roller Compacted Concrete Calculator.