Patio Slabs Required Calculator

Our Patio Base Calculator is a valuable tool for anyone planning to build a patio or other outdoor structure.

By entering the dimensions of your patio, as well as the type and thickness of the base material, our calculator can help you determine how much material you'll need and estimate the cost of the project.

With clear instructions and an intuitive interface, our Patio Base Calculator is easy to use for anyone, whether you're a professional contractor or a DIY homeowner. Try it out today and get started on your patio project with confidence!

How To Use

Enter the size you want your patio area to cover. Enter the Lengh and the Width.

Enter the size of the slabs you are thinking of using.

The Patio Slab Calculator will now show you how many slabs you need to complete the job - and also the Area size. The number of slabs will be rounded UP for when a full slab is not required (A slab needs to be cut).

A visual representation will be shown of the patio - This will clearly show any cuts that are needed.

Patio Calculations and Formula


You want to build a patio that measures 10 feet by 12 feet, using 2-inch thick paving slabs.
How many slabs will you need to cover the entire patio?


  1. First, convert the dimensions to inches: 10 feet x 12 feet = 120 inches x 144 inches.
  2. Calculate the total area of the patio in square inches: 120 inches x 144 inches = 17,280 square inches.
  3. Divide the total area by the area of one slab: 17,280 square inches รท (24 inches x 24 inches) = 30 slabs.
  4. Round up to the nearest whole number, since you can't buy fractional slabs: You will need 31 slabs to cover the entire patio.

So, the answer to the question is that you will need 31 slabs to cover the entire patio.

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The History of the Calculator! has been around since 2007! That's a long time!

The original calculator was invented in the 17th century by a Frenchman called Blaise Pascal! He was just 18 years old, and wanted to help his father do his tax calculations. Join us on the fascinating history of the calculator!

The History of the Calculator!