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Carpet Material Calculator

Use our calculator to estimate how many yards of carpet you need for the area you plan to carpet. If ready to install, we can help you find the best carpet pros near you!


Total Carpeted Area:
0 sq.ft.
You'll need:
0 yd. of 9' wide carpet 0 yd. of 12' wide carpet 0 yd. of 15' wide carpet

*10% allowance for waste is included. This is an estimate.

Your Next Step:

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Carpeting adds value to the home and when placed in the right rooms, makes the room warmer, both literally and figuratively. Once you answer the questions above, you can determine how much carpet you need for your carpet or stair project. When you’re ready to install or replace your carpet, ImproveNet can connect you with a local carpet contractor.

Carpet Calculations

The goal when laying carpet is to not have seams, or as few as possible. To do so, your carpet calculations have to be spot on. Below are the steps needed to determine how much carpet you need for your room or steps:

How to Calculate Carpet Area

To determine the carpet area, measure and draw the room. Measure the width of the room at its widest point. Measure the length of the room at its longest stretch. Then, multiply those two longest points by each other to determine the square footage of the room. Enter these numbers into our carpet calculator above.

If your carpet installer requires the total carpeted area in square yards, divide your square footage above by 9.

How to Calculate Carpet Area for Stairs

For stairs, measure one stair tread (the horizontal part) from one side to the other side of the rail (or wall) and then round it off to the nearest foot. Then, measure the stair from the bottom to the top of the tread (the vertical part) and round off to the nearest foot. Multiply these two together to determine the area of the stair. Add three inches if you plan to use carpet padding. Count all the stairs and multiply that number by the area to determine how many square feet of carpet you’ll need for all your stairs and landing. Or, just enter the stairs’ width and lengths into our carpet calculator above.

If your carpet installer requires the total carpeted area in square yards, divide your square footage above by 9.

Carpet Estimate

According to our carpet installation cost estimator, carpet installation prices are as follows:

  • Minimum Cost: $200 per project (small room, budget carpet)
  • Average Cost: $1,500 per project
  • Maximum Cost: $4,000 per project (large room, custom installation)

Carpeting is usually sold by square yards, but some dealers give a square foot price. Most come in rolls of 9-, 12- or 15-feet wide. If there has to be a seam, place it away from the doorway and somewhere where people won’t be walking over it often.

Types Of Carpet

Once you work out the carpet area, you should determine what kind of carpeting you want. There is a wide variety of carpet types to choose from, both in style and fabric type. In terms of style, they can be woven, needlefelt, knotted, or tufted—just to name a few. Each has their own strengths and weaknesses in terms of feel, durability and look.

Carpets also vary in price when mixed with the different fabrics, ranging from nylon, polypropylene, wool or wool-blends, polyester and acrylic. The best way to know which suits your needs is to feel them and talk to a local carpeting expert.

Find A Carpet Contractor

Carpet installation is no easy task. Once you determine how much carpet you need and form a price estimate, connect with at least three local carpet contractors to get the best bid for your project.


Last updated on Jan 18, 2018

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