Concrete Calculator
Calculate cubic yards/meters of concrete needed for slabs, footings, walls, and columns based on dimensions.
About the Concrete Calculator
Calculate cubic yards/meters of concrete needed for slabs, footings, walls, and columns based on dimensions.
Concrete Calculator tells you exactly how many cubic yards of concrete to order for slabs, footings, walls, and columns. Enter length, width, and thickness — get the volume plus a 10% waste recommendation. Ordering too little means a second pour (cold joint = structural weakness). Ordering too much wastes money at $150+/yard.
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Concrete Calculator
Frequently asked questions
Ready-mix concrete costs $125-175 per cubic yard delivered in the US (2024-26 prices). Minimum delivery is usually 1 yard. Short-load fees apply for orders under 5-10 yards. Bags from hardware stores cost about $120/yard but require mixing.
Sidewalks: 4 inches. Patios: 4 inches. Garage floors: 4-6 inches. Driveways: 5-6 inches. Heavy vehicle pads: 6-8 inches. Always pour on compacted gravel base with rebar or wire mesh for crack prevention.
A cold joint forms when fresh concrete is poured against hardened concrete. It creates a weak bond that cracks, leaks, and reduces structural integrity. Always complete a pour in one session — never plan to 'add more tomorrow.'
Always order 5-10% more than calculated. Subgrade irregularities, forms that bow, and spillage consume more than the math predicts. Returning unused concrete is cheaper than a second delivery for a short pour.
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