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Calculate geometric concrete volume for rectangular or circular pours, plus a simplified bag-yield planning check. Confirm the selected product before ordering.
Calculator inputs
Enter measured project values. Results update only when you choose Calculate.
Method
This calculator performs geometric volume math for one rectangular or circular pour. Enter dimensions in the displayed units and it returns the volume in entered units, cubic yards, and cubic meters.
The bag result is only a planning check built from a disclosed nominal yield. Actual yield varies by product, placement, waste, and site conditions, so use the coverage printed on the selected bag or the ready-mix supplier quantity before ordering. The calculator does not create a cement, sand, aggregate, water, strength, slump, or admixture mix design.
Run slabs, footings, piers, and other shapes separately. This form handles one rectangular prism or circular cylinder at a time; tapered, stepped, and irregular work needs additional geometry.
Use feet for every imperial dimension or meters for every metric dimension. Convert plan depths stated in inches or centimeters before entering them so length, width or radius, and depth share one unit system.
Use the entered-unit result for checking the geometry and the cubic-yard or cubic-meter result for supplier conversations. Do not round intermediate dimensions before the final conversion.
Treat the bag count as a quick check only. Confirm the selected product yield, add a project-specific ordering allowance, and account for supplier minimums, subgrade variation, forms, and placement losses outside this calculator.
Calculate cubic feet from the shape dimensions, then divide by 27. Keep depth in feet for imperial input; for example, four inches is 4 / 12, or about 0.333 feet.
No. It reports geometric volume. Add an allowance based on form accuracy, subgrade variation, placement method, supplier increments, and your completed-job history.
It is a planning check using the nominal yield disclosed beside the result. Bag yields differ by product and installation conditions, so use the selected manufacturer coverage for purchasing.
No. It does not determine cement, sand, aggregate, water, strength, slump, admixtures, reinforcement, or curing. Those requirements come from the project specification, selected product, supplier, and qualified design guidance.
Separate plan workflow
This calculator solves one bounded formula from the inputs shown. BuildVision AI supports reviewed plan takeoff, complete-document CSV, and editable quote lines; the estimator owns pricing and final bid approval.