Concrete Calculator – Calculate required concrete volume in cubic yards
The concrete calculator determines the required concrete volume in cubic yards (yd³) based on given measurements. Perfect for footings, slabs, walls, columns, and other concrete pours.
Enter structure dimensions (length, width, thickness) in inches or feet, and the calculator determines concrete amount and estimates how many bags of ready-mix or truck loads you'll need. The calculator automatically adds 5–10% waste allowance.
How much does concrete cost per cubic yard?
Ready-mix concrete (delivered by truck) costs about $100–150 per cubic yard depending on concrete grade and location. For small jobs, dry concrete bags are often used: one 80 lb bag makes about 0.6 cubic feet of concrete, so 1 cubic yard requires about 45 bags (at $4–6 each).
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Browse all tools →The concrete calculator estimates required concrete quantity based on dimensions. A handy tool for builders and renovators who want to order the right amount of concrete without unnecessary waste.
Enter the pour area length, width, and thickness, and the calculator tells you the required concrete amount in cubic meters.
- Calculate concrete needed for slabs, foundations, or columns.
- Results shown in cubic meters (m³) – the most common ordering unit.
- You can calculate concrete quantities for multiple different shaped structures.
The calculated amount is the theoretical minimum – in practice, slightly more concrete is needed.
- Add 5-10% waste allowance to the result for form tightness and other waste.
- Ground unevenness can increase actual consumption.
- Concrete is usually ordered to the nearest half cubic meter.
Concrete selection and use depend on structural requirements, and mistakes can be costly.
- Concrete strength class and properties are chosen according to use case.
- Reinforcement needs and conditions affect structural durability.
- For larger projects, always consult a structural engineer.