🏗️ Concrete Volume Calculator
Calculate the required concrete volume (m³) and estimating premix bags for slabs, columns, and footings.
How to Calculate Concrete Volume?
Whether you are pouring a driveway or building a skyscraper, calculating the exact concrete volume is the first step. Ordering short can be a disaster, while ordering too much is a waste of budget.
🟦 For Slabs (Rectangular)
V = L × W × H
Multiply Length × Width × Height (Thickness).
🔴 For Columns (Round)
V = π × r² × h
Pi (3.14) × Radius Squared × Height.
Why Add "Wastage"?
Concrete volume calculations are theoretical. In reality, the ground is never perfectly flat, forms might bow out, and some concrete spills. Site engineers always recommend adding 5% to 10% safety margin to your order.
Bags vs. Ready Mix Truck
When should you mix it yourself and when should you call a truck?
- Under 0.5 m³: Use Premix Bags (DIY is fine).
- 0.5 m³ to 1.0 m³: Borderline. A small trailer mixer might be better.
- Over 1.0 m³: Definitely order Ready Mix Concrete delivery. Mixing by hand will be too slow and inconsistent.