Concrete component volumes.
Measure slabs, walls, columns and supplied edge shapes before combining a material order.
Choose the matching calculation
Concrete Calculator
Calculate concrete in cubic yards or cubic metres for one pour or several sections. Add your allowance and supplier order increment.
Concrete Footing Volume Calculator
Sum concrete for repeated footing segments and separately specified steps or voids.
Concrete Column Calculator
Estimate repeated round or rectangular columns, with explicit internal voids.
Concrete Wall Calculator
Sum wall segments, deduct openings and remove explicitly duplicated intersection volume.
Tapered Slab Volume Calculator
Measure a rectangular concrete component whose thickness changes linearly between two ends.
Concrete Ring Volume Calculator
Measure circular concrete annuli such as collars from specified internal and external diameters.
Thickened Edge Concrete Calculator
Measure a supplied perimeter thickening without counting corner volumes twice.
Tapered Base and Shaft Volume Calculator
Combine a straight cylindrical shaft with a specified tapered base.
Specified Ribbed Slab Volume Calculator
Deduct intersections when counting two specified directions of concrete ribs.
Measure and check your assumptions
Why adding four edge strips can overcount slab corners
Does your thickened-edge takeoff count each corner twice?
Measure shaft height separately from a tapered base
Where does the straight shaft begin in a composite volume?
Deduct intersections in a supplied concrete rib grid
Why is the sum of two directions of ribs larger than the actual material?
Reconcile volume at crossing concrete wall segments
Is an intersection included in both wall segment measurements?
Check void deductions against their own concrete component
Why can a correct total void still produce an invalid takeoff?
Choose component volumes over an unweighted average thickness
When does averaging several thicknesses misstate a concrete quantity?
Why a small depth error can dominate a volume estimate
Which measured dimension contributes the largest relative volume uncertainty?
Use measured internal dimensions for round concrete forms
Can a nominal tube label stand in for its actual filled diameter?
Find an inch-to-foot thickness error before ordering
Why is a slab quantity twelve times larger than expected?
Separate ordered, delivered and used concrete quantities
Which quantity should be compared with a supplier invoice?
Keep continuous strip lengths separate from station-to-station measurements
Are repeated strip segments measured over disjoint portions of the same run?
When to pool packs across work phases
Should you round each work phase separately or combine an order?
Keep the estimate within scope
Use your measured geometry and already supplied product specifications. Counts and quantities do not select a construction system or establish code compliance.
Collect chosen results in a free browser material project. Alternative scenarios remain separate orders.