Free Tool
Concrete Calculator
Calculate concrete volume for slabs, footings, and posts
📐 Shape Type
🧱 Slab Dimensions
Typical: 100mm for paths, 150mm for driveways, 200mm+ for structural
➕ Waste Allowance
Recommended: 10% for standard jobs, 15% for complex shapes
Concrete Required
0.00 m³
Pre-mix bags (20kg): 0 bags
Ready-mix minimum order is typically 0.8m³
Common Concrete Grades
- N20: Paths, light traffic areas
- N25: Driveways, residential slabs
- N32: Suspended slabs, structural elements
- N40: Heavy duty commercial, high-rise
Disclaimer
This calculator provides estimates only. Actual requirements may vary. Always consult with a qualified concretor or engineer for structural work. Tradies Nation accepts no liability for estimates generated using this tool.