Our Concrete Calculator makes it easy to estimate how much concrete you’ll need for your project. Simply follow the steps below:

1. Choose Your Project Type
   • Slab (e.g. driveways, patios)
   • Post Hole (e.g. fence posts)
   • Block Fill (e.g. masonry walls)
2. Enter Your Measurements
   • For slabs: enter length, width, and depth.
   • For post holes: enter diameter and depth.
   • For block fill: enter number of blocks and size.
3. Add a Safety Buffer (Optional but Recommended)
   • Tick the box to add a 5% safety buffer to account for spillage, over-excavation, and inconsistencies on site.
4. Click ‘Calculate’
   • The calculator will provide the required concrete volume

Disclaimer: This tool provides an estimate only. For project-specific advice, please contact our team directly.

No, the concrete calculator only estimates the concrete volume. You will need to consult with your builder or engineer for reinforcement and base prep.

Yes. We recommend adding a 5% buffer to ensure you’re not left short once the pour begins.

Absolutely. Whether you’re pouring a small path or a series of fence posts, this tool gives you a good starting point.

Yes. Select the post hole option, enter the number of holes, diameter, and depth. The tool will calculate volume accordingly.

A safety buffer ensures you’re covered for minor miscalculations, over-excavation, or surface irregularities that could otherwise leave you short when working out concrete volumes using the concrete calculator.

A concrete calculator is a tool that helps estimate the volume of concrete needed for a construction project based on user-provided measurements.