What is a Roofing Square and How Many Squares of Roofing Do I Need?

What is a Roofing Square

A roofing square is a unit of measure used in the roofing industry. It is equal to 100 square feet. To figure out how many squares of roofing you need for your project, you will first need to determine the size of your roof. Once you have that measurement, divide it by 100 to get the number of squares you need.

What is a Roofing Square

As a homeowner, you may have come across the term “roofing square” during a home renovation project. But what exactly is a roofing square? Simply put, it is a unit of measurement used primarily in the construction and roofing industries. One roofing square equals 100 square feet of roof surface area. Calculating the number of squares needed for a roofing project helps contractors determine the required materials and estimated cost. So next time you see this term, just remember that it’s simply a unit of measurement to help calculate the size of your roof.

What does it Measure?

When it comes to roofing measurement, people talk about the “square” of roofing. A roofing square refers to a 10-foot by 10-foot section of the roof. So if a contractor quotes a price for 500 squares of shingles, they are referring to enough shingles to cover 5000 square feet of the roof. But why use this measurement instead of simply stating the number of square feet? This method brings efficiency to communication in the roofing industry- it’s much quicker to say, “we need 20 squares of shingles” rather than, “we need 200 square feet of shingles.” However, it’s important to note that a roofing square does not necessarily equal 100 square feet when taking into account the slope and other irregularities on your roof. So make sure you verify measurements with your roofing contractor before purchasing materials!

How Many Squares of Roofing do I Need

If you are planning on doing roofing work on your home or business, One of the important steps in this process is determining how much material you will need, including how many squares of roofing. A “square” refers to 100 square feet of roofing material. To calculate the number of squares, you will need simply measure the length and width of your roof and multiply those numbers to determine its total square footage. Then, divide that number by 100 to find out how many squares you will require. Keep in mind that it’s always a good idea to round up and purchase an extra square or two, just in case there are any mistakes or unexpected areas that need covering during the installation process.

What Factors Will Affect the Number of Squares I Need

When it comes to buying squares for a quilt or other sewing project, several factors can affect the amount you will need. The size of your squares will determine how many fit in a given area, but things like patterns and fabric choice can also play a role. For example, using larger squares with a complicated pattern may require more fabric than smaller squares with a simple design. In addition, if you plan on adding borders or sashing between the squares, this will also increase the amount of material needed. Taking these factors into consideration before starting your project can help ensure you have enough fabric. And remember, it’s always better to have a bit extra, just in case!

How can I Calculate the Number of Squares Needed for My Roof?

Calculating the number of squares needed for a roofing project is relatively simple. First, you need to determine the area of the roof. This can be done by measuring the length and width of the roof and then multiplying those numbers together. Let’s discuss some steps below.

Determine the Number of Planes

This will give you a total square footage number. Now that you know the total square footage, you need to determine the number of squares by dividing the square footage by 100. This will give you your answer in “squares,” which is a standard unit used by roofing contractors. For example, a roof that is 1,000 square feet in size will require ten squares of material. This is because 1 square is equal to 100 square feet. It’s important to know the number of squares when shopping for materials because this is how roofing materials are sold. Most roofing companies will even give you a free estimate based on the number of squares required for your roof. So, now that you know what a roofing square is and how to calculate the number of squares you need, you’re one step closer to getting your roof replaced or repaired.

Measure Each plane

Measure each plane of your roof and multiply the length by the width to find its square footage. This will give you the total square footage for all planes of your roof.

For example, if your roof has two planes—one measuring 30 feet by 50 feet and another measuring 40 feet by 20 feet—you would calculate the square footage as follows:

30 × 50 = 1,500 square feet

40 × 20 = 800 square feet

1,500 + 800 = 2,300 square feet

Now that you know the square footage of your roof, you can calculate the number of squares required to cover it. Most roofs are sold in “squares,” with each square covering 100 square feet. So, for our example roof above, we would need 23 squares to cover it (2,300 ÷ 100 = 23).

Keep in mind that your roof may not be a perfect rectangle, and you may have areas that jut out or are cut away.


Use our Roofing Square Calculator to estimate the number of squares you need for your project. Just enter the length and width of your roof and click calculate. Need help deciding how many squares to order? Our experts are happy to help you in Texas, USA to choose the right amount of material for your job.


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