How Many Pavers Do I Need? A Simple Calculator Guide for Your Project
Photo: Atlas Paving
Getting your paver quantity wrong is one of the most common yet costly mistakes first-time buyers make. Order too few and your project stalls while you wait for a second delivery that may not even match the original batch.
Order too many, and you’re stuck with excess stock and a lighter wallet. If you’ve never bought pavers before, knowing where to start can feel overwhelming.
The good news is the calculation is simpler than it looks. With your area measurements and a couple of straightforward steps, you can land on an accurate number before you ever set foot in a store. Here’s exactly how to work it out.
1. Measure Your Area First (This Is the Only Maths You Need)
Before you can order anything, you need your area in square metres. For a simple rectangle, multiply the length by the width and that’s it. A 5m × 4m patio equals 20m². For irregular shapes like an L-shaped path or a garden border with a curve, break the area into separate rectangles, calculate each one, and add the totals together.
Always measure twice and write the number down before you do anything else, because it’s the foundation everything else builds on.
2. Find Your Paver’s Coverage Rate
Not all pavers are the same size, so each one covers a different amount of ground. To find the coverage rate for your chosen paver, check the product page, the packaging, or simply ask your retailer. As a practical example, a standard 400×400mm paver covers 0.16m², which means you need approximately 6.25 pavers per square metre.
Once you know your paver’s coverage rate, you can multiply it by your total area to get a baseline quantity, though there’s one more step before that number is ready to use.
3. Apply the Waste Factor (The Step Most People Skip)
Your baseline calculation gives you the minimum, but it’s never the number you should order. Cutting pavers to fit edges, corners, and obstacles around your project will generate offcuts that can’t be reused, and those cuts add up faster than most people expect.
As a general rule, add 10% to your total for a standard straight-lay pattern, or 15% if you’re laying on a diagonal or in a herringbone design. Skipping this step is the single most common reason homeowners find themselves short and scrambling for a second order.
4. Use This Simple Formula to Get Your Number
Once you have your area and coverage rate, the full calculation comes together in one step: (Area m² × pavers per m²) × 1.10 for a straight lay, or × 1.15 for a diagonal pattern. Using the earlier example of a 20m² patio with a paver coverage rate of 6.25 per m², that gives you 20 × 6.25 × 1.10 = 137.5 pavers, which you’d round up to 138.
This is the same method used by professional pavers and landscapers on every job they quote. The formula isn’t complicated; it just needs to be done in the right order.
5. What to Do With Your Number
Once you have your final figure, always round up to the nearest full pack or pallet and never round down. Suppliers including Atlas Paving sell pavers by the unit, by square metre, or by pallet depending on the product, so it’s worth checking how your chosen paver is packaged before you finalise your order.
If you end up with a few extra pavers, hold onto them. Pavers can chip or crack over time, and having matching stock on hand means you can repair your project seamlessly years down the track with no hunting for a discontinued product that no longer exists. You can buy pavers directly through Atlas Paving and browse the full range to find the right fit for your project.
Ready to Order With Confidence?
Measure your area, find your paver’s coverage rate, apply the waste factor, and use the formula. That’s all it takes to arrive at a number you can trust. It’s not complicated once you work through it step by step.
