About BuildCalc
Material estimates with visible formulas and adjustable assumptions.
Measure, calculate, confirm
BuildCalc helps plan quantities of concrete, masonry, gravel and mulch. Calculations run in your browser. You can adjust dimensions, overage and supplier prices without creating an account.
What the numbers mean
Geometric volume comes from the dimensions you enter. The order allowance adds your chosen overage. Whole bags and masonry units round up. Cost estimates use your prices and exclude labor, delivery, equipment and tax.
Estimate limits
These tools estimate materials; they do not design foundations, reinforcement, structural slabs or retaining walls. Project specifications, local requirements, ground conditions and product yields vary. Confirm purchasing quantities and order increments with your supplier.
How calculations are checked
Geometry and unit conversions have automated tests. Bag yields and masonry face dimensions are documented on the relevant calculator pages. Tests check the implementation; they do not guarantee a project’s design or quantities on site.