Key takeaways
- Uses standard 1:2:4 assumption for RCC and 1:6 for plaster (adjustable in mix design).
- First-pass estimate — always add 5–7% buffer.
- Bag weight assumed 50 kg (~0.0347 m³ / bag).
Try the calculator
First-pass estimate — confirm against your engineer's mix design and drawing.
How it estimates
Volume of concrete = Area × Thickness. The calculator applies a dry-volume multiplier (1.54) and the cement proportion in your chosen mix. Result is divided by ~0.0347 m³ per 50-kg bag.
This is a first-pass number — real quantity depends on the engineer's actual mix design, wastage and site conditions.
Frequently asked questions
Is this an exact number?
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No. It's an engineering first-pass estimate. Real orders should include a 5–7% buffer and follow the structural drawing.
Does it work for plaster and slab both?
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Yes — choose the type in the calculator and it uses the appropriate ratio.
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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