Built for one decision: how much to order

ConcreteQty is the independent calculator published at concreteqty.com. It is not a ready-mix supplier, a contractor, or an engineering office. The order quantity in the form and the worked tables on each calculator page come from the same calculation engine.

The site operator reviews the cited bag yields and ordering references on the sources page. The worked examples were regenerated from that engine on October 9, 2026.

What you can check

Measured volume, a waste allowance you can change, supplier rounding, bag counts from the cited yields, and a cost total only after you enter prices and fees.

What this site does not do

It does not choose thickness, strength, reinforcement, footing depth, frost depth, or code compliance. It does not look up a local price, sell concrete, or charge for a PDF of the result. The print view is the same calculation you already see. Corrections go through the private corrections form and are not published as a directory or review.

Last reviewed October 9, 2026.