Lyquid.xyz
Back to Calculators
Other

Concrete Calculator

Estimate concrete volume, waste, bag count, and material cost for slabs or round columns.

Calculator.net reference
Inputs
Defaults are prefilled so the result is visible immediately.
ft
ft
in
in
%
/yd
$
Results
Results update as the calculator inputs change.

Concrete needed

1.63 yd³

Base volume

1.48 yd³

Cubic feet

40 ft³

80 lb bag estimate

74

Estimated material cost

$260.74

Formula and Assumptions
Slab volume = length x width x thickness; column volume = pi x radius^2 x height; cubic feet are divided by 27 for cubic yards.

The bag estimate assumes about 0.6 cubic feet per 80 lb bag.

Waste factor is applied after multiplying by quantity.

Reference Upgrade
Built from the Calculator.net model, with added context.

Live validation and instant result updates instead of a submit-only workflow.

Multiple decision metrics are shown together, not only the primary answer.

Formula notes and assumptions are visible on the page so the math is easier to audit.

Reference Model

Modeled after the input style and primary output on Calculator.net's Concrete Calculator.

The page keeps the math in one place and exposes the assumptions beside the result.

Default inputs: shape=slab, length=12, width=10, thickness=4, diameter=12, quantity=1