How to use it
- Enter the total concrete volume in cubic meters.
- Enter the desired slab thickness in meters (must be >0).
- Click Calculate.
- Read the resulting area in square meters.
Your project starts with two numbers: how much concrete you have and how thick you want the slab. This calculator takes those inputs and instantly tells you the square meters you can pour, so you know if you need more mix or can order a smaller batch. Knowing the exact area helps you price the job, avoid costly over‑ordering, and plan formwork accurately. The result appears in m²; compare it to the footprint of your driveway, patio, or foundation. If the area looks larger than expected, double‑check the thickness entry – a small mistake can swing the outcome dramatically. Use the figure to order the right amount of material and keep waste low. You can also round the result to the nearest whole square meter for easier communication with suppliers.
Pro tips
- Add a 5‑10% waste allowance to the calculated area before ordering material.
- Round the final area to the nearest whole m² for simple quotes.
- If you have multiple thicknesses, calculate each separately and sum the areas.
- Double‑check that thickness is entered as a decimal (e.g., 0.15 m, not 15 cm).
Real-life examples
- A homeowner planning a 0.1 m thick garage floor wants to know how much existing concrete will cover.
- A contractor estimating material for a 0.2 m thick commercial slab needs the exact square meters to price the job.
- A landscape designer sizing a decorative concrete pathway with varying thicknesses.
Case study
Sam needed a 15 m³ batch for a backyard patio 0.12 m thick. Using the calculator, he saw he could cover 125 m², matching his design and avoiding a second delivery, saving time and $300.