Key takeaways
- Uses dry-volume multiplier 1.54 over wet concrete volume.
- 1:2:4 is the common default for RCC unless specified otherwise.
- Add ~5% wastage buffer.
Try the calculator
First-pass estimate — confirm against your engineer's mix design and drawing.
Behind the numbers
Wet concrete volume = L × W × T. Dry volume = wet × 1.54. Cement, sand and aggregate proportions are computed from the mix ratio you choose.
Frequently asked questions
Which mix do most house slabs use?
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1:2:4 is a very common design mix for residential slabs unless the engineer specifies otherwise.
Do I need to add water separately?
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The water-cement ratio is decided during mix design (typically 0.45–0.55 by weight). This calculator handles the solids only.
Written by
Written by the shop-floor team at Harsh Traders (Mandi Binaganj, Guna, MP) — authorised Bangur Cement and SEL Tiger 550D TMT dealer. Reviewed against day-to-day contractor and homeowner experience across the Chachaura tehsil.
Mandi Binaganj, Chachaura-Binaganj, Guna (MP)Related reading
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