Your carpet's shape and area
My carpet is:
Rectangular
Carpet's width
ft
Carpet's length
ft
Carpet's area
ft²
Your carpet's costs
Price
$ per
ft²
Total carpet cost
$

Use this carpet calculator to figure out the cost of your dream carpet. This tool will save you a lot of time and money when buying a carpet. It does all of your calculations for you to let you know whether you can afford that carpet you've been eying for so long, provided you know the carpet price. We will also show you the process of how to calculate carpet cost, so you can do it on your own in no time. All in all, we promise that this tool is going to be of invaluable help in your carpeting process. You can also read our short guide on how to choose a carpet to make sure you are getting exactly what you need.

How to calculate carpet cost?

Even though it may seem complicated at first, the carpet price calculator is easy and intuitive to use. Start by choosing the shape of your carpet. After that, follow these short steps to get your carpet's price calculated in no time:

1. For a rectangular carpet, input the carpet's width and length into the carpet calculator. If you want to do the math on your own, you can use the following area formula:

carpet area = carpet's width * carpet's length

Once you know the area, you can move on to calculating the cost. Put in the carpet's price per unit of area (remember to select the unit of area your carpet is being sold in), and you will get the total cost thanks to the following equation:

carpet cost = carpet area * carpet price per unit

Carpet calculator: rectangular shape

2. For a circular carpet, the only value you need to input is the radius of your carpet. The carpet price calculator will then work out the area with this equation:

carpet area = π * radius²

To calculate the carpet's cost, put in the price of the carpet per unit and the area you have just calculated in the following formula:

carpet cost = carpet area * carpet price per unit

Carpet calculator: circular shape

3. If you're going for an oval carpet, provide the lengths of the A axis and the B axis of the ellipsis, or use the following formula to calculate its area on your own:

carpet area = axis A * axis B * π

All that's left to do is using the price of the carpet per unit and the area's value to calculate the cost:

carpet cost = carpet area * carpet price per unit

Carpet calculator: oval shape

4. To calculate the area of a pentagonal carpet, input the length of one of the pentagon's sides so that the carpet cost calculator can work out its area. If you feel like doing the math on your own, you can use the following equation:

carpet area = side² * √(25 + 10√5) / 4

Next, use the area to calculate the cost:

carpet cost = carpet area * carpet price per unit

Carpet calculator: pentagonal shape

5. Lastly, for a hexagonal carpet, you need to do the same thing you would do with a pentagon - give the calculator the length of one of the hexagon's sides, or use this formula to get its area on your own:

carpet area = 3/2 * √3 * side²

Calculating the cost is the same as in the previous cases:

carpet cost = carpet area * carpet price per unit

Carpet calculator: hexagonal shape

A note on using the carpet calculator

Knowing how to calculate carpet cost is one thing, but what about the installation? As with pretty much all construction projects, both amateurs and professionals are only human and, as such, are prone to making mistakes. To make sure you don't waste gasoline going back and forth to the store for additional materials, consider buying at least 10% more of everything. If you need help with the calculations, check out our percentage calculator.

How to choose a carpet?

When shopping for a carpet, there are a number of factors worth considering other than just carpet price. Here's a short guide to what you should think about before buying a carpet, so that it fits your needs perfectly.

  • What is my budget? One of the first things to consider when wondering how to choose a carpet should be the cost. Carpets come in all shapes, colors and prices. Unfortunately, the carpet price doesn't always depend on the quality or size - frequently the place of origin, prestige of the producer and even such seemingly unimportant details as the trendiness of the pattern push costs up. You should estimate how much money you can spend on a carpet in advance to avoid the frustration and disappointment of looking at a carpet that is way out of your price range.

  • Where will the carpet be and what will it be exposed to? It's important to remember that there are different kinds of carpet for different kinds of rooms. For example, a fluffy, luxurious carpet is best suited to the bedroom, where you don't spend a lot of time (and also where you wanted to be greeted by a nice feeling on your feet when you wake up after a good nights sleep). A living room carpet, on the other hand, should generally have shorter hairs and be made of more resilient fibers, as this is where people tend to spend most of their time and is therefore more prone to staining, tears, et cetera. Pets and children should be taken into account when buying a carpet.

  • What are my needs and what kind of carpet fibers would suit them best? Directly stemming from the point above, the type of fibers is something you should always look at. Natural fibers tend to be more expensive, but they can be less resilient and, in some cases, may even cause allergies. If you have pets, or if you're looking for a carpet to go in the hall where a lot walking will be done, you may want to consider synthetic fibers instead. If your house has underfloor heating, it's important to know that not all kinds of fibers are suitable for rooms with underfloor heating, so make sure to choose a fiber that can handle it. Evaluate your needs and see what's available at your carpet store to get both the right carpet and the best carpet price.

  • What about underlay? Carpet underlay is something people often forget about when talking about how to choose a carpet, but it's worth considering. Investing in a suitable underlay is especially important if you live on the first floor and above and do a lot of walking, as this part of a carpet has a major influence on its acoustic qualities (you wouldn't want you neighbors hearing your every move, would you?). Underlay is most often made out of rubber or foam.

Marysia Kluziak.

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