If you’ve ever stood halfway through a paving project wondering “Have I ordered enough bags of grout?” — you’re definitely not alone.
Working out how many bags of paving grout or bedding mortar you’ll need isn’t always straightforward. Slab size, joint width and joint depth all play a big part in overall coverage, and even small changes can significantly affect quantities.
That’s exactly why we built our Product Calculator — to take the guesswork and the stress out of your paving project.
What Is Our Paving Grout & Mortar Calculator?
Our paving grout and mortar calculator is a simple online tool that tells you exactly how many bags of material you need for your project. It’s designed specifically for paving products, including Flowpoint Paving Grout, so you can rely on the results.
Instead of estimating or over-ordering “just in case”, the calculator provides an accurate quantity in seconds — helping you plan properly, reduce waste and order with confidence.
What Do You Need to Use the Calculator?
Good news — you don’t need to be a numbers person or work anything out manually.
The calculator only asks for a few simple details:
Total area – in square metres
Paving slab size – length and width in millimetres (mm)
Joint width (in mm)
Joint depth (in mm)
Enter these details and the calculator instantly works out how much material is required — including the exact number of bags of paving grout or bedding mortar required for your project.
Simply find the product you want to buy and use the in-built calculator at the top of that product’s page to calculate how much you need.
Find the Right Product & Calculate Quantities
Choose your product through the buttons below to access the built-in calculator and check quantities before ordering.
Why Use a Grout Calculator Instead of Guessing?
Every paving project is different. Large-format slabs with narrow joints require very different quantities compared to smaller paving with wider joints — which is why rough estimates can quickly fall short.
Using our paving material calculator helps you:
✔️ Order the correct number of bags first time
✔️ Avoid running out of grout or mortar mid-job
✔️ Reduce waste and unnecessary spend
✔️ Plan your project with confidence
It’s particularly useful when pricing up a job, ordering materials online or planning deliveries in advance.
Ideal for Trade and DIY Projects
Whether you’re a professional landscaper or tackling a DIY patio at home, our paving grout calculator is designed to make life easier.
Trade users can calculate quantities quickly for quotes, ordering and project planning
DIYers can order materials with confidence — even if it’s their first paving project
No formulas, no guesswork — just clear, reliable results.
Use the Product Calculator Before You Order
Before placing your order, use our paving grout calculator to find out exactly how many bags of grout or bedding mortar your project requires. It’s quick, free and designed to help your job run smoothly from start to finish.
Less guesswork, less waste and better paving results — just one of the practical extras you get when you order from a small, family-run business.
