Concrete Calculators

Concrete volume, bag, post-hole, slab, and material-cost estimators. Every calculator runs locally in your browser and exposes the formula or product-coverage assumptions it uses.

Flagship takeoff

Concrete Slab Calculator

Calculate cubic feet, cubic yards, ready-mix quantity, and bag counts for a rectangular concrete slab from length, width, thickness, and waste.

Concrete Bag Calculator

Convert a required concrete volume into 40 lb, 60 lb, or 80 lb bag counts using published bag yields.

Concrete Calculators

Post Hole Concrete Calculator

Estimate concrete volume and bag count for cylindrical post holes, subtracting the volume occupied by a square post.

Concrete Calculators

Concrete Cost Calculator

Estimate ready-mix concrete material cost from cubic yards, price per yard, delivery charge, and extra fees you enter.

Methodology

These are quantity and pricing estimators, not structural designs. Product-specific coverage values are editable, and code-sensitive structural decisions are intentionally excluded.

YOUR LOCAL QUOTE

Volume first, cost second

Use a concrete volume calculator to determine cubic yards, then enter your supplier's actual price, delivery charge and minimum billing rules in the Concrete Cost Calculator.