Concrete Mix Design Calculator
Easily determine accurate concrete mix proportions based on grade, water-cement ratio, and material densities. This calculator helps civil engineers, site supervisors, and students design concrete mixes for strength, durability, and workability.
Determine mix proportions for desired strength & workability.
Enter the concrete grade (M20 → 20 MPa, M25 → 25 MPa).
Enter your desired water-cement ratio (typically 0.40–0.55).
Use default material densities or adjust if needed.
Click Calculate to get cement, water, fine aggregate, and coarse aggregate quantities.
Apply results per 1 m³ of concrete production.
🧭 How to Use
FAQ
1. What is concrete mix design?
It is the process of determining the correct proportions of cement, water, sand, and aggregate to achieve desired strength and workability.
Q2. Is this calculator accurate for field use?
It provides a simplified mix design suitable for quick estimation. For high-precision projects, lab tests are recommended.
Q3. What is the best water-cement ratio?
Most mixes use 0.40–0.55 depending on workability and strength needs
4. Can I use this mix design calculator for any concrete grade?
Yes, the calculator works for all common grades (M10–M40). Simply enter the required strength and water-cement ratio to get proportion estimates