Welcome to our Paving Calculator, where you can calculate the area of your desired patio project. Additionally, we have created some information on how you can best utilise our calculator, as well as some other helpful calculators as listed below:

Paving Area Calculator

Paving Sub-Base Calculator

Required Paving Slabs Calculator

Feet to Metres Calculator

How does our paving calculator work?

To use our paving calculator, you simply need to select the shapes that make up your desired patio area and then input the respective measurements as prompted to see your total paved coverage.

Read more below on how you can split your paving into shapes for easier calculations and measurements.

Paving Area Calculator

Select a shape to add it to your paving area:

Rectangle Right-angled Triangle Quarter Circle Half Circle Full Circle

Total Area: 0 m²

How to find the area of paving required

To find the area for your patio, you will first need to decide on the shape you want, as well as some perimeter measurements.

If you require a simple rectangular (or square) patio, simply multiply the width by the height to calculate your desired patio area.

Height and width of paving

Of course, this is the simplest way of working out your area, though you may often have trickier shapes to calculate the area for.

To do so, you will need to split the shape into multiple rectangles/squares. For example, if you require an "L" shaped patio, you would split it into two rectangles and figure out the are of the two rectangles, then add them together.

See diagram below of how you would do this:

Total area of L shaped paving - height and width calculation

To calculate any patio area, you will need to split it up into a collection of simple shapes.

Another popular example would be having a rectangular area connected to a quarter or half circle.

This is often so there is a small additional space for things such as a barbecue or sun lounger without taking up too much area on the main section of paving.

To work out the area of a circle, you will only need the radius (the length from the very centre to the outside of the circle). Once you have this, we then use the formula π r² to calculate the are for a FULL circle.

Once we have this calculation, we simply need to divide it by 2 for a half circle, or 4 for a quarter circle.

Then, you can add that area to the rectangle area, as shown in the diagram below:

total area of rectangle and quarter circle paving for patio shapes height width and radius

Of course, these are some simple examples of how you might want to lay out/shape your garden paving, however there are limitless ways you may decide on.

Keep in mind, these will all require splitting into multiple shapes, often more than just two.

For example, here we have to split this into 3 sections to create two rectangles and a triangle to make our garden paving:

Total area of paving shapes including triangle from height and width

Calculate Sub-Base Required for Paving Area

The next step after you have calculated your desired patio space is to calculate the total sub-base required for that area.

Use this calculator as an approximation to how much sub base you will need based on the area and necessary sub-base depth.

Tip: We recommend laying a minimum of a 100mm sub base

Paving Sub-Base Calculator

Total Area (m²): Preferred Depth (mm):

Calculate Required Number of Paving Slabs

Use this simplified calculator to work out the total number of slabs you will require for your project based on total area.

This calculator is specifically designed to work out the total required pavers for both 900x600 and 600x600 sizes.

It is also recommended to add a further 10% for wastage, which we have integrated into our calculator.

Please note these are just estimates and oftentimes you may require more if you have obscure cuts.

Required Paving Slabs Calculator

Patio Width (m): Patio Length (m): Select the size of the slab:

Convert Feet to Metres

Converting between feet and metres is essential in a world where both the imperial (feet) and metric (metres) measurement systems are in use. This conversion capability caters to the global diversity of measurement preferences, ensuring accessibility and ease of understanding for people from different regions.

Feet to Metres Converter Calculator

Feet: Metres: