Concrete Mix Pro.
Calculate nominal mix proportions for M10, M15, M20, M25 concrete or generate initial parameters for Design Mix as per IS 10262:2019.
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Nominal Mix vs. Design Mix
Nominal Mixis used for regular construction work where the mix proportions are fixed (e.g., M20 is 1:1.5:3). It is suitable for grades up to M25 as per IS 456:2000.
Design Mixis used for high-strength concrete (M30 and above) where proportions are scientifically calculated based on material testing and target strength. This follows the IS 10262:2019 guidelines.
Standard Mix Ratios (IS 456)
| Grade | Proportion (C:S:A) | Water/Cement | Usage |
|---|---|---|---|
| M10 | 1 : 3 : 6 | 0.60 | PCC, Base |
| M15 | 1 : 2 : 4 | 0.55 | Foundations |
| M20 | 1 : 1.5 : 3 | 0.50 | Typical Slabs |
| M25 | 1 : 1 : 2 | 0.45 | RCC Beams/Columns |
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How to Design a Concrete Mix
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Technical FAQ & Regulatory Compliance
1What is the "M" and the "Number" in M20?
2Does the calculator account for bulking of sand?
3Is M30 a nominal mix?
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