Contents

- 0.1 How do you calculate carpet for stairs and landing?
- 0.2 What is the formula for carpeting stairs?
- 1 How do you measure stairs for stair carpet?
- 2 How many metres of carpet do i need for 13 stairs?
- 3 Do you count the landing as a stair?
- 4 How much should a stair landing be?
- 5 How do you calculate stairs for stairs?
- 6 How should carpet fit stairs?
- 7 What is the best carpet height for stairs?
- 8 How many stairs is a standard floor?
- 9 How many square feet of carpet do I need for stairs with landing?

### How do you calculate carpet for stairs and landing?

Example of a main landing area – Stand on the top step and mark on your plan where the landing meets the stairs. Measure the width and the length of this area; (including the height and width of the top step) and multiply the measurements to calculate how much carpet you’ll need. Use metric measurements, and again, remember to add 10 centimetres to all your total length and width measurements.

### What is the formula for carpeting stairs?

Say, 14 steps. Calculate your needed carpet length by substituting these measurements in this formula: length = riser rise × number of steps + tread run × (number of steps – 1). That is length = 10 inches × 14 + 12 inches × (14 – 1) = 296 inches.

#### How do you measure stair landing?

How to Measure Stairs and a Landing for Carpet Finding out how much carpet you need to cover stairs and a landing is a matter of taking a few simple measurements with a measuring tape and putting them together. Measure each landing on the staircase and add a little extra to account for installation to figure out how much carpet you need to cover the landing.

- 1 Measure the width of the landing with a measuring tape. Put the end of the measuring tape against the base of the stair that meets the landing and stretch it out to the baseboard on the opposite wall. Read the number where it meets the baseboard and write down the width of the landing to refer to later.
- It’s a good idea to measure the width in at least 2 different spots in case the landing is not completely square. Use the longest of the measurements when calculating how much carpet you need (carpet can always be trimmed down to fit).

- 2 Use your tape measure to find the length of the landing. Turn your tape measure 90 degrees and measure from the baseboard where the landing meets the wall to the top edge of the stairs that continue down. Write down the length of the landing.
- Check the length of the landing in at least 2 places and go with the bigger number if there is any difference.

Tip : The length and the width of the landing will be the same in most cases, since they correspond to the width of the stairs, but it’s always a good idea to measure just in case there are any differences.

- 3 Add 2 in (5.1 cm) to the length and width of the landing. Add 2 in (5.1 cm) to each measurement to account for folding some of the carpet under during installation. This will ensure there is enough carpet to cover the landing.
- The carpet will be folded under and stapled during installation to get a clean-looking finished edge. This is why you need to add 2 in (5.1 cm) to both the length and width.

- 1 Measure the width of the stairs with a measuring tape. Stretch out the measuring tape parallel to the edge of a stair to get the width. This number tells you how wide the carpet needs to be to cover the stairs.
- Do this for 2-3 stairs in case there are any variations in width. Use the widest measurement as the number for your width to ensure you get carpet that is wide enough (you can trim it to fit any stairs that are narrower).

- 2 Turn your tape measure 90 degrees and measure the depth of the stairs. Hold the measuring tape flat against the tread of the stair, put the end of the measuring tape against the base of the next stair up, and stretch it out to the edge of the stair. Read the number at the very edge to get the depth and write it down to refer to later on.
- The tread of a stair is the part that you step on when walking up and down the stairs. Think of the depth as how much room for your foot there is from heel to toe on the stair.
- Again, do this for 2-3 stairs and use the larger number for the depth of the stairs if there are any differences.

- 3 Hold your tape measure vertically to measure the rise of the stairs. Flip your tape measure vertically so the end is flat against the tread of a stair and you can stretch the tape measure up into the air to measure how tall the stair is. Measure from the tread of the stair to the edge of the stair above and write down this number.
- Note that the rise is how tall the stair is, whereas the depth is how deep the tread is. The rise is a vertical measurement, and the depth is a horizontal measurement.
- Do this at least 2 times to make sure you are getting the right number for the rise. Use the bigger number if there are any variations.

Tip : Some stairs have “nosing” (an edge that sticks out a bit). If this is the case, you can pinch the tape measure between your thumb and forefinger around the nosing when you are measuring the depth of a stair, then continue to extend the tape measure down to measure both the depth and the rise at the same time.

- 4 Multiply the depth and the rise of the stairs by the number of stairs. Add the depth and rise together. Count the number of stairs on the whole staircase and multiply it by the sum of the depth and rise.
- For example, if the depth of the stairs is 10 in (25 cm) and the rise is 7 in (18 cm) then you would multiply 17 in (43 cm) by the number of stairs. If there are 10 stairs, then the total would be 170 in (430 cm).

- 5 Add about 4 in (10 cm) to the length as a safety net. This will give you a little wiggle room for minute errors in your measurements or irregularities in the stairs. Add more than 4 in (10 cm) if you want to be extra-careful or know that your staircase is a bit odd (such as a staircase in a very old house that has warped with time).
- For instance, if you know that you need 170 in (430 cm) of carpet, then get at least 174 in (440 cm) to account for error.

Ask a Question Co-authored by: Residential Remodeling Expert This article was co-authored by Josh Goldenberg. Josh Goldenberg is a Residential Remodeling Expert and the Co-Founder of 5blox, based in the Greater Los Angeles area. With more than seven years of experience, Josh and his team specialize in luxurious and sustainable home renovations.5blox is fully licensed and bonded.

- Co-authors: 5
- Updated: March 17, 2022
- Views: 11,661

Thanks to all authors for creating a page that has been read 11,661 times. : How to Measure Stairs and a Landing for Carpet

## How do you measure stairs for stair carpet?

How much does it cost to cover 13 stairs? – (Image credit: Carpetright) To work out how much it costs to cover 13 stairs, you’ll need to work out how much carpet you will need. Follow these steps: Step 1. Measure the height and depth of each step and add these numbers together to get the length.

Step 2. Measure the width of the stairs and multiply the two figures to get the area of each individual step. Step 3. Multiply this figure by the number of steps in your staircase, in this case it would be 13. The average cost of carpet is between £15/$20 and £20/$27 per square metre, but what you pay will largely depend on what material you use.

When it comes to covering a straight set of stairs, you’re looking at spending between £80 and £100 on average. However, the price will vary depending on what materials you use, the type of staircase you have and if you need an underlay.

## How many metres of carpet do i need for 13 stairs?

How much carpet is needed for both stairs and landing? – When it comes to volume, it’s all going to come down to how much carpet you need to cover your stairs and landing, and which carpet you go for! For example, if you have a staircase with 13 steps and 1.2 metres by 1.2 metres landing, you will need to calculate the total square metre coverage of the stairs and add this to the total square metre coverage of the landing to get your total – you would be looking at 10 square metres of carpet.

### How much carpet do I need for 12 stairs?

A Few Examples – Let’s start with a simple box stair. For a typical set of 12 box stairs, you’ll multiply the 36″ width by the 18″ tread and riser, then multiply by 12 stairs. The total is 7776 square inches of carpet, which equates to 54 square feet. Simple enough, right? Now let’s take a more complex case.

Pie stairs: three pieces, each 48″ x 30″ for a total of 4320 square inches. Cap stairs: 12 stairs, each 48″ wide, with a rise of 8″ and a tread of 10″, plus 3″ for the nose. The total is 12,096 square inches. Total square inches: 16,416 Total square feet: 114

You can see how this staircase, even though it’s just a foot wider and a few stairs taller, requires more than twice as much carpet to cover! That’s why measuring before you shop is so important — you don’t want to come up short, and you don’t want to be surprised by how much it costs.

Now that you have your measurements, add 10% for safety. It’s impossible to install carpet, especially on stairs, without having to trim and adjust here and there, so it’s good to have a little more than you need. With these techniques, you can determine exactly how much carpet you need to cover your stairs, so you can come into our warehouse equipped with the exact numbers you need to shop and compare.

And with our network of professional installers, we’ll have your stairs carpeted and looking fresh in no time! : How To Measure Your Stairs For Carpet

### How many feet of carpet do I need for 15 stairs?

Box Stair –

A box stair is straight, has no railing posts, and is closed in on all sides.It is typically approximately 3′ wide.The usual allowance for the tread (the flat part you step on) is 10″, and 8″ for the riser (the back of the stair). Therefore, for every box stair, you require 3′ (or the width of your stair) x 18″ of carpet.

### How much carpet do I need for 8 stairs?

Download Article Download Article If you’re installing or renovating a staircase, you’ll most likely need to figure out the amount of new carpeting you’ll need to cover the stairs. The basic steps you’ll take to measure your stairs for carpeting are straightforward. Measure the width, height, and depth of the stairs and use these measurements to calculate the area.

- 1 Measure the width of 1 tread with a tape measure. The tread of a stair is the horizontal part of the stair on which you step. With a tape measure, measure from 1 side of the stair tread to the other side. Round your measurement to the nearest foot (or to the next 30 cm, if you prefer metric measurements), and record the width measurement.
- Unless you have abnormally wide or narrow stairs, they’ll measure close to 3 feet (0.91 m).
- If you plan to only install a carpet runner down the center of your stairway, measure the width of the area that you plan to cover.

- 2 Add 2 in (5.1 cm) to the total width measurement. When carpeting professionals install the carpet, they’ll bend about 1 inch (2.5 cm) of it over on either end so that the rough-cut carpet edges aren’t visible. Without these extra 2 inches (5.1 cm) added to the measurement, you’ll find yourself short on carpet.
- So, if the stair width is exactly 36 inches (91 cm), with the added inches, the stair now measures 38 inches (97 cm).

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- 3 Measure upward across the tread and riser of 1 stair. Set your tape measure at the back edge of the tread, and measure the tread from front to back. Then bend the tape measure down at a 90° angle and continue measuring in the same direction down the riser.
- If the tread overhangs the riser, measure back to the riser itself under the overhang and then down to the bottom. You’ll use the total measurement to calculate the height of each stair.
- Risers are typically around 6–7 inches (15–18 cm) high.

- 4 Round the measurements up and record them with a pen and paper. Round up the measurements that you’ve taken so far—the width of each tread and the combined length of a tread and riser—up to the nearest foot (or to the next 30 cm, if you prefer metric measurements).
- Rounding the measurements up will ensure that you have a little extra carpeting to cover the steps in case any gets thrown away.

- 5 Measure the length and width of a landing separately from the stairs. Measuring the carpet for landings is straightforward: use a tape measure to calculate the length and width of the landing. While you’re measuring the width of the landing, bend the tape measure and measure the height of the riser directly beneath it.
- As you did for the step measurements, round the landing measurements up to the nearest foot (or to the next 30 cm, if you prefer metric measurements).

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- 1 Multiply the measurements to find the square footage of 1 step. Multiplying the rounded length and width measurements will yield the square footage of a step. The square footage—also called the area—of a step will give you the number of square feet (or meters) that you’ll need to cover with carpet. So, the calculated area of 1 of the stairs in our example would be: 8 square feet (0.74 m 2 ).
- If you plan to install carpet padding beneath the carpet on the stairs, add 3 inches (7.6 cm) to the total area of the stair before rounding.

- 2 Multiply the area of 1 step by the number of steps. Count the total number of stairs and record that number. Multiply the square footage of 1 step—the number you just calculated—by the total number of steps. This is the total area, or square footage, for the stairs you plan to carpet.
- Keep in mind that the stairs may not all be in 1 row. For example, many homes have 6 stairs, then a small landing, then 6 more stairs.

- 3 Calculate the area of a landing and add it to the area of the stairs. Find the landing measurements that you calculated earlier. Multiply the landing’s length times its width. This will give you the total area of the landing (and the riser just below it). Add this number to the total area of the stairs to calculate the total surface you’ll need to purchase carpet for.
- In our example, your landing measures 4 by 5 feet (1.2 m × 1.5 m). Multiply these dimensions to calculate the amount of carpet you’ll need to cover the landing: 20 feet (6.1 m).

- 4 Use an online carpet calculator if you’d rather not do the math by hand. An online calculator can run the math equations for you, which may prove useful if you’re not confident in your math skills. Simply input the width and height of the number of stairs you’ll be carpeting. Hit the “calculate” key, and the calculator will give you the total area measurement.
- Find a carpet calculator online at: https://www.homeadvisor.com/r/carpet-calculator,
- For another option in which you’ll only need to input the width and number of your stairs, check out: https://www.improvenet.com/r/carpet-calculator,

- 5 Add 10% extra to avoid running out of carpeting. Mistakes can happen while carpet is being installed, and it’s always better to have too much carpeting than too little. So, add in an extra 10% of the total to make sure that you’ll have enough carpeting to compensate for any errors your or the carpet installers may make.
- In our example, the total stair surface area came to 96 square feet (8.9 m 2 ). Adding an extra 10% to this estimate gives us a final figure of: 106 square feet (9.8 m 2 ).

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Add New Question

- Question How do I convert square inches to square feet? A square foot is the area of a square one foot (12 inches) on a side, so there are 144 square inches in a square foot. So divide the number of square inches by 144 to get square feet. Or if you’re lazy, just type something like “5000 square inches in square feet” into a Google search, and Google won’t just tell you the answer, it will bring up a conversion calculator!
- Question How do I get 5 feet from 1887 inches? You don’t.1887 sq inches should be divided by 144 sq inches (the amount of sq inches in a sq foot), and you should get 13.1 or so sq feet.
- Question How do I round when putting carpet on stairs? Round up, then just cut off the extra carpet.

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- Tape measure
- Pen
- Paper
- Online carpet calculator

- Before purchasing your carpet, consult with a specialist to allow for the nap of the carpeting and any seams that may be necessary.
- If your stairs are not all the same size, multiply width by height to determine the area of each stair separately. Add the measurements together to calculate the total area and amount of carpeting you will need.

Advertisement Article Summary X To calculate how much carpet you’ll need for your stairs, start by measuring the width of 1 tread with a tape measure and add 2 inches to make sure you have enough carpet. Next, measure upward across the tread and riser of 1 stair.

- After measuring the riser, get the length and width of any landings, then round all of your measurements up to the nearest foot.
- Once you have these numbers, multiply the tread and riser measurements together to get the square footage of 1 step, then multiply your result by the number of steps.
- Likewise, multiply the length and width of the landing to get its area.

Finally, add the area of the landing with the area of all the steps to find out how much carpet you need. For more tips, like how to know how much extra carpeting to get, read on! Did this summary help you? Thanks to all authors for creating a page that has been read 427,561 times.

### What is the ideal stair landing size?

Typical Building Code Specifications for Stair Landings – Photo: this building entry door and stairway, photographed by the editor in Tucson, Arizona, illustrates at least four dangerous stair construction mistakes that invite a fall and injury.

- Stair Landing Required: There shall be a floor or landing at the top and bottom of each stairway. Exception: A floor or landing is not required at the top of an interior flight of stairs, provided a door does not swing over the stairs, This means there is no door swinging out over the stairway. – Ed.
- Stair Landing Length: Every landing shall have a minimum dimension of 36 inches (914 mm) measured in the direction of travel. Some codes such as Florida in the U.S. require that the landing length be at least 44 inches.
- Stair Landing Width : The width of each landing shall not be less than the stairway served. Typical minimum stairway width is 36″ so the landing must also be at least 36″ wide. – Ed.
- Stair Landings vs Stair Total Height: A flight of stairs shall not have a vertical rise greater than 12 feet (3658 mm) between floor levels or landings. This means that if the height or rise between two floors is more than 12 feet, you need an intermediate stairway landing. – Ed.

## Do you count the landing as a stair?

Does the landing count as a step? – Yes it does. It amazes me how many people like to argue this one. Remember that when counting stairs, you are counting how many times you have to lift your foot. If you have to lift your foot to get onto the landing, then it counts as a step. To top of page

## How much should a stair landing be?

How wide should a landing be? – British Spirals & Castings When deciding on what stair design best suits your property, the often fiddly and confusing Building Regulations can turn a dream do-over or DIY renovation into a logistical nightmare. The team here at British Spirals & Castings can help walk you through these requirements as we design your staircase, but we know some customers like to get their head around these rules before getting in touch.

- One of the key considerations is how wide your landing needs to be and how much free space is needed at the top and bottom of the staircase.
- Under current guidelines in England, Scotland and Wales, the top and bottom of the stairs are effectively treated as a landing.
- This means there must be clear, unobstructed space at either end of the flight so you can get up and down the staircase easily.

The particular requirements will depend on your building type and the spaces served by the staircase. For all buildings:

In all cases, stairs must have landings which are at least as big – in length and width – as the width of the flight. This will need to comply with the. For example, if the stair width is 1000 mm, then the landing must be at least 1000 mm by 1000 mm in area. The diagram below shows how this works.

The landing should also be kept clear of permanent In England and Wales, doors to cupboards or ducts may open over the landing in England, provided they are kept shut/locked in normal use and still provide a minimum clear space which is at least 400 mm deep (as shown below). In Scotland, this is only allowed on private staircases (those within homes).

Landings should be level. They can only have a gradient if the surface is firm and the maximum gradient along the direction of travel is 1:60. This means that for every 1 unit of rise or fall, there should be 60 units of landing. This is more likely to occur in external situations.

Dwellings: In England, Scotland and Wales, it is possible for a door at the top or bottom of the staircase to swing across the landing providing a minimum clear depth of at least 400 mm is maintained (as shown below) Non-dwellings: In non-domestic situations, there needs to be a bigger space on the top and bottom landings than in domestic dwellings. The reason for this is simple, these flights. Will serve more people than one in the home and there may be people moving in both directions on the staircase at a given time.

There must be an unobstructed clear depth of at least 1200 mm on each landing.In England and Wales, doors may only swing across landings when they are shut/locked under normal use. In Scotland, doors must not swing across this space.

If you live outside England, Scotland or Wales, you will need to check your local Building Regulations to confirm the exact requirements. Once you are measured up, take a look at our and get in touch or send a quote request. Our friendly team will help to design a made to measure staircase for your space. : How wide should a landing be? – British Spirals & Castings

## How do you calculate stairs for stairs?

Use a tape measure to record the distance from the upper floor to the lower floor. If the flooring is not yet installed, add the thickness of the flooring to the total rise. Divide the total rise by the estimated height of the stair risers (7- 7 3/4 inches) to determine the approximate number of stairs.

## How should carpet fit stairs?

How do I fit carpet on stairs? > Q04 Carpet has a specific ‘pile direction’ (i.e. the direction in which the fibres of the carpet ‘lean’) – when fitting a carpet on stairs, this pile direction must run from the top of the stairs to the bottom (length ways). You can usually tell the pile direction by looking at a cross section of the carpet, of running your hand along it to check for resistance. Also, if you drop a coin onto the carpet it will bounce if the direction of the pile – try this several times and you’ll notice the pattern! Please note that with carpets, the stripe will usually follow the pile direction. : How do I fit carpet on stairs?

#### How long is a staircase for carpet?

faq > Measuring & Fitting Q05 Based on a straight set of stairs with 12 steps you’d roughly need 6m x 90cm (19.7′ x 3′). However this does not budget for winding stairs or ‘bullnoses’ on the individual steps. This can be made up from multiple pieces or one wider piece – if you’d like further advice or information, please contact us and we’ll be happy to help.

## What is the best carpet height for stairs?

The best carpet for stairs has a low pile—¾-inch or less—to be both more stable underfoot and resilient to traffic. – A synthetic plush style in twisted or cut pile is always a safe option, while a looped style like Berber is occasionally avoided (particularly if you have pets whose claws may catch in the carpet loops).

#### How many meters is an average staircase?

3. DESIGN CONSIDERATIONS –

- 3.1 General
- Differences in level should be illuminated or minimized as much as possible for the comfort of disabled people.
- A complementary ramped route, elevator or lift should be provided where there are steps in an otherwise accessible path.
- All steps should be uniform.

Circular stairs and stepped landings should be avoided (fig.1). Open risers are not recommended.3.2 Width The minimum width of a stairway should be 0.90 m for one-way traffic and 1.50 m for two-way traffic. For indoor stairs, the riser should be between 0.12 m and 0.18 m, and the tread between 0.28 m and 0.35 m.

- Sharp edges and overhanging nosing should not be used for treads.
- Nosing should be flush or rounded and should not project more than 40 mm.
- 3.5 Handrails

Handrails must be installed on both sides of the stairs and around the landing for gripping (fig.3). For stairs more than 3.00 m wide, one or more intermediate handrails could be provided (fig.5). The distance between the handrails when both sides are used for gripping should be between 0.90 m and 1.40 m (fig.5).

Handrails must extend a distance between 0.30 m and 0.45 m at the top and bottom of the stairs (see ) (fig.3).3.6 Tactile marking (fig.2) (fig.3) A textural marking strip should be placed at the top and bottom of the stairs and at intermediate landings to alert sightless people as to the location of the stairs.

The tactile marking strip should be at least 0.60 m wide and should extend over the full width of the stairs. To guide users with poor vision, the colour of the strip should contrast with the surrounding surface.3.7 Surface

- Landings, treads and nosing should be slip-resistant and free of projections.
- Exterior stairs should be pitched forward at 10 mm per metre to drain surface water.
- Slip-resistant stair nosing should be used to fix carpets on stairs.
- 3.8 Emergency stairs
- Emergency stairs should be identified by tactile markings.
- 3.9 Mechanical stairs (escalators)

Mechanical stairs can be provided with an adaptable tread at least 1.20 m long, if they are to be used by persons confined to wheelchairs (fig.6). The edges of escalators should be painted in a contrasting colour for the benefit of poor- sighted users.

### How much space should I leave for carpet?

How high should baseboard be off the floor? – In the majority of cases, the gap between the baseboard and the floor will be between 3/8″ and 1/2″. However, if you’re working with a thicker carpet and/or padding, this gap could easily be as wide as a full inch.

#### How long is a 13 step staircase?

Length of Staircase for 10-Foot Ceiling – A 9-foot ceiling building typically has between 17 to 18 steps in a flight of stairs. Using the minimum tread length of 10 inches, the length of the staircase for a 10-foot ceiling works out to between 170 inches (4318 mm) to 180 inches (4572 mm).

## How many stairs is a standard floor?

Make the challenge fun, make the challenge educational, make the challenge relevant: – There are typically 2,000-2,500 steps in one (1) linear mile. If I had to walk to work from home (36 miles), I’d have to take 72,000 steps. Stair steps are typically eight (7) inches high.

### How much carpet do I need for 10 steps?

Box Stair –

A box stair is straight, has no railing posts, and is closed in on all sides.It is typically approximately 3′ wide.The usual allowance for the tread (the flat part you step on) is 10″, and 8″ for the riser (the back of the stair). Therefore, for every box stair, you require 3′ (or the width of your stair) x 18″ of carpet.

## How many square feet of carpet do I need for stairs with landing?

Download Article Download Article If you’re installing or renovating a staircase, you’ll most likely need to figure out the amount of new carpeting you’ll need to cover the stairs. The basic steps you’ll take to measure your stairs for carpeting are straightforward. Measure the width, height, and depth of the stairs and use these measurements to calculate the area.

- 1 Measure the width of 1 tread with a tape measure. The tread of a stair is the horizontal part of the stair on which you step. With a tape measure, measure from 1 side of the stair tread to the other side. Round your measurement to the nearest foot (or to the next 30 cm, if you prefer metric measurements), and record the width measurement.
- Unless you have abnormally wide or narrow stairs, they’ll measure close to 3 feet (0.91 m).
- If you plan to only install a carpet runner down the center of your stairway, measure the width of the area that you plan to cover.

- 2 Add 2 in (5.1 cm) to the total width measurement. When carpeting professionals install the carpet, they’ll bend about 1 inch (2.5 cm) of it over on either end so that the rough-cut carpet edges aren’t visible. Without these extra 2 inches (5.1 cm) added to the measurement, you’ll find yourself short on carpet.
- So, if the stair width is exactly 36 inches (91 cm), with the added inches, the stair now measures 38 inches (97 cm).

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- 3 Measure upward across the tread and riser of 1 stair. Set your tape measure at the back edge of the tread, and measure the tread from front to back. Then bend the tape measure down at a 90° angle and continue measuring in the same direction down the riser.
- If the tread overhangs the riser, measure back to the riser itself under the overhang and then down to the bottom. You’ll use the total measurement to calculate the height of each stair.
- Risers are typically around 6–7 inches (15–18 cm) high.

- 4 Round the measurements up and record them with a pen and paper. Round up the measurements that you’ve taken so far—the width of each tread and the combined length of a tread and riser—up to the nearest foot (or to the next 30 cm, if you prefer metric measurements).
- Rounding the measurements up will ensure that you have a little extra carpeting to cover the steps in case any gets thrown away.

- 5 Measure the length and width of a landing separately from the stairs. Measuring the carpet for landings is straightforward: use a tape measure to calculate the length and width of the landing. While you’re measuring the width of the landing, bend the tape measure and measure the height of the riser directly beneath it.
- As you did for the step measurements, round the landing measurements up to the nearest foot (or to the next 30 cm, if you prefer metric measurements).

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- 1 Multiply the measurements to find the square footage of 1 step. Multiplying the rounded length and width measurements will yield the square footage of a step. The square footage—also called the area—of a step will give you the number of square feet (or meters) that you’ll need to cover with carpet. So, the calculated area of 1 of the stairs in our example would be: 8 square feet (0.74 m 2 ).
- If you plan to install carpet padding beneath the carpet on the stairs, add 3 inches (7.6 cm) to the total area of the stair before rounding.

- 2 Multiply the area of 1 step by the number of steps. Count the total number of stairs and record that number. Multiply the square footage of 1 step—the number you just calculated—by the total number of steps. This is the total area, or square footage, for the stairs you plan to carpet.
- Keep in mind that the stairs may not all be in 1 row. For example, many homes have 6 stairs, then a small landing, then 6 more stairs.

- 3 Calculate the area of a landing and add it to the area of the stairs. Find the landing measurements that you calculated earlier. Multiply the landing’s length times its width. This will give you the total area of the landing (and the riser just below it). Add this number to the total area of the stairs to calculate the total surface you’ll need to purchase carpet for.
- In our example, your landing measures 4 by 5 feet (1.2 m × 1.5 m). Multiply these dimensions to calculate the amount of carpet you’ll need to cover the landing: 20 feet (6.1 m).

- 4 Use an online carpet calculator if you’d rather not do the math by hand. An online calculator can run the math equations for you, which may prove useful if you’re not confident in your math skills. Simply input the width and height of the number of stairs you’ll be carpeting. Hit the “calculate” key, and the calculator will give you the total area measurement.
- Find a carpet calculator online at: https://www.homeadvisor.com/r/carpet-calculator,
- For another option in which you’ll only need to input the width and number of your stairs, check out: https://www.improvenet.com/r/carpet-calculator,

- 5 Add 10% extra to avoid running out of carpeting. Mistakes can happen while carpet is being installed, and it’s always better to have too much carpeting than too little. So, add in an extra 10% of the total to make sure that you’ll have enough carpeting to compensate for any errors your or the carpet installers may make.
- In our example, the total stair surface area came to 96 square feet (8.9 m 2 ). Adding an extra 10% to this estimate gives us a final figure of: 106 square feet (9.8 m 2 ).

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- Question How do I convert square inches to square feet? A square foot is the area of a square one foot (12 inches) on a side, so there are 144 square inches in a square foot. So divide the number of square inches by 144 to get square feet. Or if you’re lazy, just type something like “5000 square inches in square feet” into a Google search, and Google won’t just tell you the answer, it will bring up a conversion calculator!
- Question How do I get 5 feet from 1887 inches? You don’t.1887 sq inches should be divided by 144 sq inches (the amount of sq inches in a sq foot), and you should get 13.1 or so sq feet.
- Question How do I round when putting carpet on stairs? Round up, then just cut off the extra carpet.

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- Tape measure
- Pen
- Paper
- Online carpet calculator

- Before purchasing your carpet, consult with a specialist to allow for the nap of the carpeting and any seams that may be necessary.
- If your stairs are not all the same size, multiply width by height to determine the area of each stair separately. Add the measurements together to calculate the total area and amount of carpeting you will need.

Advertisement Article Summary X To calculate how much carpet you’ll need for your stairs, start by measuring the width of 1 tread with a tape measure and add 2 inches to make sure you have enough carpet. Next, measure upward across the tread and riser of 1 stair.

After measuring the riser, get the length and width of any landings, then round all of your measurements up to the nearest foot. Once you have these numbers, multiply the tread and riser measurements together to get the square footage of 1 step, then multiply your result by the number of steps. Likewise, multiply the length and width of the landing to get its area.

Finally, add the area of the landing with the area of all the steps to find out how much carpet you need. For more tips, like how to know how much extra carpeting to get, read on! Did this summary help you? Thanks to all authors for creating a page that has been read 427,561 times.