Concrete Strength Mix Calculator

Our concrete mix calculator determines the proper proportions of cement, sand, and aggregate to achieve your target strength in PSI. Whether you're mixing concrete for a fence post, patio, or structural application, this tool provides the correct mix ratio and material quantities.

Concrete strength depends primarily on the water-cement ratio and mix proportions. Lower water content creates stronger concrete but is harder to work. The calculator provides standard mix designs from 2000 PSI for non-structural applications up to 5000+ PSI for driveways and structural work.

This calculator is valuable for contractors mixing on-site, DIYers making custom concrete, and anyone asking "what is the concrete mix ratio for 3000 PSI?" For critical structural applications, use commercial ready-mix concrete with certified strength.