How to calculate your concrete project with Concrete Buddy

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How to Calculate Your Concrete Project (Step-by-Step Guide)

Before you start any concrete job — whether it’s a small patio or a full driveway — you need to know exactly how much concrete, rebar, mesh, and reinforcement your project requires. Guessing often leads to over-ordering, wasted money, or running short right in the middle of a pour.

This guide (and the video below) walks you through how to calculate your concrete project accurately using the Concrete Buddy App. You'll learn how to measure, how to calculate slab volume, and how to include reinforcement and thickened edges in your estimate.

What You’ll Learn in This Video

  • How to enter slab dimensions for instant volume calculations
  • How to add slab thickening for edges or deeper sections
  • How to include rebar or stirrups for reinforcement
  • How to calculate wire mesh or foam under the slab
  • How to get a full material + cost breakdown for any job

Step 1: Measure Your Project Area

Use a tape measure to determine the length, width, and thickness of your slab. For circular pads or irregular shapes, measure the radius or widest points. Precise measurements lead to precise concrete volume.

To learn more about concrete project planning, you may also find this helpful:
👉 Rebar vs Wire Mesh vs Fibre Mesh — What’s Best for Your Project?

Step 2: Add Reinforcement

Most concrete projects require reinforcement to prevent cracking and increase strength. Depending on your project, you may need:

  • Rebar – for driveways, slabs with heavy loads, and foundations
  • Wire Mesh – ideal for patios, sidewalks, and general-purpose slabs
  • Fibre Mesh – added directly to the concrete mix for additional support

For a complete breakdown of reinforcement types, check out:
👉 Rebar vs Wire Mesh vs Fibre Mesh — Full Comparison

Step 3: Review Your Quantities and Costs

The Concrete Buddy App automatically calculates:

  • Total concrete volume (in m³ or yd³)
  • Rebar lengths, mesh rolls, or fibre mesh quantities
  • Base prep materials, gravel, and formwork
  • Finishing supplies and optional add-ons
  • Local labor + material pricing (based on your settings)
  • Full project cost summary

This makes it simple to compare quotes, plan your budget, or adjust your project size before ordering materials.

Recommended Concrete Guides

These articles pair perfectly with this step-by-step calculator tutorial:

Want a fast way to calculate your concrete volume, reinforcement, pricing, rentals, and more — all in one tool?

📲 Download Concrete Buddy — Free

Concrete Buddy makes concrete estimating simple, accurate, and fast — whether you’re a contractor or a first-time DIYer.

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