14 concrete estimation calculators to estimate concrete in cubic yards or bags, with estimated material costs. Estimate concrete needed for a rectangular slab, circular slab, footing, circular columns or posts, poured walls, block walls, and steps. Estimate the number of blocks or CMUs to build a block wall, and estimate the material needed for a mortar mix. Estimate the amount of rebar for a slab and the gravel needed for the base. 14 Free Calculators: - Rectangular slab - Circular slab - Footing - Circular column - Poured wall - Steps - Post holes - Gravel - Block wall - Block fill - Mortar - Rebar Reinforcement - Mesh Reinforcement - Area - Volume Enter dimensions in inches, feet, yards, centimeters, or meters. Get results in US customary or metric measurements. Based on the calculators on Inch Calculator(www.inchcalculator.com) that are trusted by millions of people world-wide for material estimation.