Calculating Square Footage of a Room for Your Flooring Project

Calculating the square footage of a regular rectangular room (Room A):

Steps 1: Measure the length and width inside the r

Steps 1: Measure the length and width inside the room with your tape measure.Step 2: Record your dimensions on a piece of paper.Step 3: We went ahead and used 12ft for our width and 5ft for our length.Step 4: You will take the dimensions and multiple them together (12 x 5) to get your square footage.Step 5: You should get 60 for Room A.

Room A has 60 square footage.

This example was very basic and wouldn’t be an ideal 12 foot x 5 foot room. So what do you do if you have 12 feet 3 inches for the width and 10 feet 7 inches for the length?


Steps 1: Measure the length and width inside the room with your tape measure.Step 2: Record your dimensions on a piece of paper.

Step 3: You would round up to the nearest number. For example: the width of 12 feet 3 inches would actually be 13 feet. The length of 10 feet 7 inches will be 11 feet.Step 4: You will take these dimensions and multiple them together (13 x 11) to get your square footage.Step 5: You should get the number 143 for Room B.

Room B has 143 square footage.

Converting Square Footage to Yards

Sometimes you run into situations where things are measured in yards. (You “metric people” can feel free to roast us Americans in the comment section all you want, but it won’t change anything). All the math above works exactly the same. A driveway 50-yards long and 12-yards wide is 600-yards because 50 x 12 = 600.

A football field is 120 yards long by 160 feet wide if you include the end zones. When doing math with two different units of measurement (feet and yards in this case), you need to do a conversion. If we take 160 (feet) and divide it by 3, that tells us the width of the football field in yards.

160 ÷ 3 = 53.33 yards. Next, we can simply multiply 120 x 53.33. Do that, and you get ~6,400 square yards of football field. The approximation comes from the fact that 160 ÷ 3 is not really 53.33 yards but actually 53.333333… When estimating, getting close works perfectly because you typically want to add 10% on top anyway to cover waste.

A football field measures 100 yards by 160 feet. B
A football field measures 100 yards by 160 feet. Before you can find square feet, yards, inches, meters, or smoots, you must convert the length and width to the same units of measurements

What if your boss then changes his or her mind (as they are known to do)? They now say they want to know the football field in square feet. You can redo the math by multiplying 120 x 3 which gives you 360 feet. Then, take 360 and multiply it by 160 feet to get 57,600 square feet (incidentally, that’s about 1.32 acres).

Video

How to calculate how many pieces of bullnose you will need?

If you have ten feet exposed edge that needs bullnose this is equal to 120″.  If you selected a 6″ bullnose or trim piece, you will need to divide 120″ by 6″, which will give you 20 pieces of bullnose needed.  Using 8″ decorative liner for the same 120″, you divide 120″ by 8″ which would be 15 pieces of liner needed.

How to Calculate Square Footage

Square footage is area expressed in square feet. Likewise, square yardage is area expressed in square yards.  Square meters is also a common measure of area.

Assume you have a rectangular area such as a room and, for example, you want to calculate the square footage area for flooring or carpet.

The way to calculate a rectangular area is by measuring the length and width of your area then multiplying those two numbers together to get the area in feet squared (ft2). If you have on oddly shaped area, such as an L-shape, split it into square or rectanglualar sections and treat them as two separate areas. Calculate the area of each section then add them together for your total. If your measurements are in different units, say feet and inches, you can first convert those values to feet, then multiply them together to get the square footage of the area.

Convert all of your measurements to feet

  • If you measured in feet skip to “Calculate the Area as Square Footage”
  • If you measured in feet & inches, divide inches by 12 and add that to your feet measure to get total feet
  • If you measured in another unit of measure, do the following to convert to feet – inches: divide by 12 and that is your measurement in feet – yards: multiply by 3 and that is your measurement in feet – centimeters: multiply by 0.03281 to convert to feet – meters: multiply by 3.281 to convert to feet

Calculate the Area as Square Footage

  • If you are measuring a square or rectangle area, multiply length times width; Length x Width = Area.
  • For other area shapes, see formulas below to calculate Area (ft2) = Square Footage.

So how do you calculate the square footage of a room that has closets:

Calculating the square footage of a room that has a closet shouldn’t be tricking. The easiest method to do this is separate or split the room into separate rectangles.

Steps 1: We first separated the main space and the

Steps 1: We first separated the main space and the closet into two different dimensions/spaces. Dimension 1 (blue) is the main larger space. Dimension 2 (orange) is the closet.Step 2: Your first task is to measure the main length and width inside the room with your tape measure. (Dimension 1)Step 3: Record your dimensions on a piece of paper.Step 4: We went ahead and used 5 feet 3 inches (remember to round up to 6 feet) for our width and 10 feet 7 inches (remember to round up to 11 feet) for our length.Step 4: You will take the dimensions and multiple them together (6 x 11) to get your square footage for Dimension 1 for Room C.Step 5: You should get the number 66 for Dimension 1.Step 6: Repeat Steps 2-5 for Dimension 2. You should get the number 15 for Dimension 2.Step 7. After calculating all separate rectangles, you would add them up to get your overall square footage. Dimension 1 (66) + Dimension 2 (15) equals 81 sq ft.

Room C has 81 square footage.

You can apply this method to some complicated rooms such as:

Consider adding waste factor for your flooring pro

Consider adding waste factor for your flooring project

It is always a good idea to add 10% to your square footage. Here is a couple of reasons why:• You will have to cut the length of flooring to fit in certain spaces• Everyone miscalculates dimensions and will make the wrong cut• You might not like the one particular flooring plank design and will set it aside• Ordering an extra box of flooring at the end can cost you in shipping charges• If you run out of flooring during installation, your project can be put on hold• If you order flooring for exact square footage and don’t get to project right away, the flooring might be discontinued when you do install. Finding the extra square footage of the discontinued flooring can be a nightmare.

So how do you calculate for the waste factor? Easy.

Here is our room examples from above:

  • Room A: 60 (sq ft) x 0.10 (waste factor) = 6
  • 60 (sq ft) + 6 (waste factor) = 66 sq ft needed for room A
  • Room B: 143 x by 0.10 = 14.3
    • 143 (sq ft) + 14.3 (waste factor) = 157.3 sq ft needed for room B
  • Room C: 81 x by 0.10 = 8.1
    • 81 (sq ft) + 8.1 (waste factor) = 89.1 sq ft needed for room C
  • Room D: 84 x by 0.10 = 8.4
    • 84 (sq ft) + 8.4 (waste factor) = 92.4 sq ft needed for room D

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