Last checked
May 12, 2026
We checked the page logic, support notes, and related links on this page.
Project Hub
Concrete Estimating
Estimate concrete volume and rough material cost for slabs, footings, and post holes.
Concrete and aggregates3 calculatorsGuides and quote prep included
How to use it
Planning before buying
Use this project hub for a planning check, then confirm the final order or quote against live product data and site conditions.
Why trust it
See how the site is maintained
Read the calculator methodology and editorial policy for the standards behind these pages.
Start here
Start with the calculator that best matches the main material or buying format for the job.
Concrete Calculator
Estimate concrete volume and rough material cost for slabs, footings, and post holes.
Slab Concrete Calculator
Estimate slab concrete volume, order quantity, and rough cost from slab dimensions and depth.
Footing Concrete Calculator
Estimate footing concrete volume, order quantity, and rough cost for trench and strip foundations.
How to use this project hub
Start with the calculator that matches the material or buying format you actually need, then move into the related guides if you need more detail before buying or requesting quotes.
What affects estimates most
Dimensions, depth or coverage assumptions, waste allowance, and pack or stock-length rounding are usually the biggest drivers of the final buying number.
Why the linked guides matter
The extra guides in each hub explain common mistakes, trade-offs, and buying choices that a simple quantity figure cannot cover on its own.
Popular question pages
Use these pages for faster answers when you already know the basic dimensions of the job.
Concrete for Slab Calculator
Estimate slab concrete volume with length, width, depth, and waste guidance.
Concrete for Post Holes Calculator
Work out concrete needs for fence posts and similar jobs.
Slab Concrete Calculator by Volume
Work out how much Slab Concrete you need from length, width, depth, and a realistic waste allowance.
Slab Concrete Quantity Guide
Use the job dimensions to build a sensible order quantity for Slab Concrete.
Footing Concrete Calculator by Volume
Work out how much Footing Concrete you need from length, width, depth, and a realistic waste allowance.
Footing Concrete Quantity Guide
Use the job dimensions to build a sensible order quantity for Footing Concrete.
Guides and next steps
These guides help explain waste, product choice, and buying format once the first estimate is clear.
Concrete Volume Guide
Understand cubic metres, cubic feet, and practical buying margins for concrete orders.
Ready-Mix vs Bagged Concrete
Compare ready-mix and bagged concrete for small and medium jobs.
Use this project hub to brief suppliers or installers
Work through the core calculator first, then use the linked guides and quote checklist to request cleaner, more comparable prices.
- Confirm what the quote should include: materials only, labour only, or both.
- State access, finish level, timing, and any unknowns clearly.
- Ask each supplier or installer to price the same scope and exclusions.
You can also open the wider Concrete Estimating project hub if the quote depends on more than one material.