Observed arrival · 2026-08-28
The ACI Concrete Mix Design Calculator
A free calculator for preparing preliminary concrete mixes under the ACI 211.1-22 method.
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The tool follows the ACI 211.1-22 absolute-volume method and exposes intermediate quantities including water, water-cement ratio, cementitious content, and aggregate volumes. Users can begin with 3000, 4000, or 5000 psi reference grades or supply a custom specified strength and slump. The site also includes a material-cost calculator and describes an optional $4.99 report containing the proportioning trail and batch weights per cubic yard and cubic metre.
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