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Lineal/Square Footage Calculator
Enter lineal feet and the material width to calculate the total square footage of material. If you know how many square feet of material, enter that and the material width to convert to lineal feet.
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.
How to estimate the flooring cost?
Once you know how much material you need, it’s time to grab your wallet and drive to that Home Depot. Before you do it, though, you can spend a few more seconds to predict how much you’re going to pay for the flooring.
All you need to do is determine the price per one square foot of your chosen material, be it hardwood, vinyl, or laminate flooring. For example, your material of choice might be sold at 3 $/m2.
Once you know this price, multiply it by the square footage of the material you need to buy to find out how much it will cost you. If the price is too high for your liking, make sure to consider other options – for example installing tiles or choosing a cheaper finish that you’ll cover with a carpet.
Naturally, this price doesn’t take into account additional materials such as thresholds or special edging. If the type of flooring you chose is difficult to install, you might also have to include the cost of equipment (such as sanders or floor rollers) or even hire a contractor to help you.
Stages 2 and 3 (for stone and ceramic floor tiles)
In stage one, you worked out the square footage of your space. In stage two, you need to work out how many tiles it will take to fill that space. Obviously, this is dependant on the size of tiles you've chosen.
Just use our helpful chart below to find the number you need to divide by. Then, just divide the square feet area of the room by the number from the chart.
Your tile size / The number to divide by
- 4" x 4" / 0.1089
- 6" x 6" / 0.25
- 9" x 9" / 0.5625
- 12" x 12" / 1
- 18" x 18" / 2.25
E.g. A 140ft2 room is going to be fitted out with 9" terracotta floor tiles, so you divide 140 by the number from the chart, which for 9" tiles is 0.5625.
140 ÷ 0.5625 = 248.9 tiles
The final stage is just to buy a few more boxes than you think you need; you will definitely use more than the number you calculated in the second stage. Tiles are likely to get broken during the fitting process, and it's always a good idea to keep a spare pack for years in the future in case any get damaged. Stone tiles can vary due to their natural colouring, and manufacturers can vary or discontinue lines, so do buy extra in the first instance, rather than hoping for a close enough match later down the line.
To work out how many extra to get, multiply the number of tiles by 1.05 for a 5% increase, or by 1.1 for a 10% increase.
E.g. 248.9 x 1.1 = 274 tiles (always round up the decimal point to give a more generous margin)