Concrete Calculator
Calculate concrete volume, materials needed, and costs for slabs, columns, cylinders, and footings
Project Details
Concrete Volume
—
m³
Total Weight
—
kg
Material Breakdown
Cement
—
bags
Sand
—
kg
Aggregate
—
kg
Water
—
L
Mix Ratio Details
Select a mix ratio to see details.
📐 Volume Formulas
Slab: L × W × D
Column/Cylinder: π × r² × H
Footing: L × W × D
🧱 Mix Ratio Guide
1:2:3 → 1 part cement, 2 sand, 3 aggregate
Stronger ratio = more cement
📦 Bag Sizes
Common sizes: 20kg, 25kg, 40kg, 50kg
Density: 1440 kg/m³