Expert Guide
Concrete Calculators
Column Concrete Calculator – Material Estimator
Quality Inspector
Calculate the concrete volume and required materials (cement, sand, aggregate) for rectangular or square pillars/columns.
📐 Formula & Method
The volume for columns is Height × Width × Depth. By multiplying this by the Number of Columns, we get the total wet volume. This is converted to dry volume and divided according to the specified mix ratio.
Total Wet Volume = (Height × Width × Depth) × Quantity
Total Dry Volume = Wet Volume × 1.54
📋 Worked Example
For four 3m tall columns of 230mm × 230mm (M20 grade): • Volume of 1 column = 3 × 0.23 × 0.23 = 0.1587 m³ • Total Wet Volume = 0.1587 × 4 = 0.6348 m³ • Dry Volume = 0.6348 × 1.54 = 0.977 m³ • Cement = 0.977 / 5.5 / 0.0347 ≈ 5.1 bags
❓ Frequently Asked Questions
M20 (1:1.5:3) is the minimum grade recommended by IS:456 for RCC work, but M25 (1:1:2) is highly recommended for columns in multi-story buildings.
Currently this supports rectangular/square columns. For circular columns, you can manually calculate the area (πr²) and multiply by height to get the volume, then use our generic Concrete Mix Ratio Calculator.
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