Senior Civil Engineer
Concrete Mix Calculator
Determine the ratio of cement, sand, and stone needed for a specific concrete strength (e.g., M20, M25).
Density Constants
Standard Bag Yields
*Approximate yield after water addition.
Water Ratio Tip
Always start with 3/4 of targeted water. Excess water significantly reduces structural PSI.
Adding a 10% waste factor is industry standard to account for spills, uneven forms, and consolidation.
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Calculation Logic
Frequently Asked Questions
About the Expert: Mark Stevens, PE
Senior Civil Engineer (PE, MS in Structural Engineering)
Mark Stevens is a licensed Professional Engineer with over 20 years of experience in structural design and construction management. He specializes in masonry standards and concrete engineering.
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