Calculation of wallpaper for the wall. How to calculate wallpaper for a room: proper renovation without extra costs Calculation of wallpaper rolls for a room

Any renovation in an apartment should begin with preparing a preliminary estimate to determine the required amount of consumables that will be needed during the finishing work. If the task is to replace wallpaper in a room, then first of all you need to determine the number of rolls required to paste it. A correctly performed calculation will allow you to avoid unnecessary problems during repairs in the future, as well as save your money.

Today there are several well-known and accessible ways to calculate the required number of rolls of wallpaper:

• along the perimeter of the room and the number of stripes;
• by the total surface area of ​​the walls required for pasting;
• using online calculators.

Calculation based on the perimeter of the room and the number of stripes

This method involves determining the required number of strips of wallpaper required for pasting a specific room. For this:

• the length and width of the room are measured, on the basis of which its overall perimeter is determined;
• the width of the window and door opening is measured, which is subtracted from the total perimeter;
• the resulting value is divided by the width of the wallpaper rolls that are supposed to be used to cover the room;
• the calculated value is rounded up to a whole value and represents the required number of stripes;
• this value is divided by the number of strips that one roll of wallpaper contains, depending on its length;
• the resulting value is also rounded to the nearest whole value, which represents the required number of rolls of wallpaper.

Let's look at this calculation method using a specific example:

Example. It is required to wallpaper an ordinary room measuring 7.5 m by 3 m, with a ceiling height of 2.5 m, a window opening of 2.1 m by 1.5 m and a door of 0.9 m by 2 m. For pasting, wallpaper 53 cm wide will be used. and 10 m long.

To calculate the required number of rolls of wallpaper you need:

1. Determine the total perimeter of the room: (7.5+3)*2=21 m.
2. Determine the total width of the window and door opening: 2.1 +0.9=3 m.
3. Subtract the total width of the openings from the total perimeter: 21-3 = 18 m.
4. Divide the resulting value by the width of the wallpaper roll: 18/0.53 = 33.9 and round the result to the nearest whole value - you get 34 strips needed to cover the room.
5. Calculate the number of strips of wallpaper in one roll, for which you need to divide the length of the roll by the flow height: 10/2.5=4.
6. Divide the required number of strips of wallpaper by the number of strips in one roll: 34/4 = 8.5 and round this figure to the nearest whole value - you get 9.

Thus, to cover this room you will need 9 rolls of wallpaper. It should be borne in mind that this method does not take into account the surface of the walls above and below the openings of windows and doors, so it is advisable to additionally purchase another roll.
read in a separate review.

Calculation of the area of ​​the wall surface to be pasted

This method is considered more accurate and economical, especially for large areas. It is based on determining the total surface area of ​​the walls of the room that needs to be covered with wallpaper.

For this:

• the total area of ​​the walls is calculated by measuring the perimeter of the room and multiplying it by the height of the ceiling;
• the total area of ​​window and door openings is determined;
• the resulting value is subtracted from the total area of ​​the walls, resulting in a value equal to the surface area of ​​all the walls that need to be covered with wallpaper;
• the area of ​​wallpaper in one roll is calculated by multiplying the width of the roll by its length;
• finally, the total area of ​​the walls for pasting is divided by the area of ​​wallpaper in one roll;
• the resulting value, rounded up to the nearest whole number, will be the required number of rolls for pasting the room.

Using an online calculator

If you don’t want or have the ability to do the calculations yourself, you can use a special online calculator. Today on the Internet there are many sites that allow you to use the services of such an online calculator completely free of charge.

To carry out the calculation, you must first measure the following quantities:

• room length;
• width of the room;
• ceiling height;
• wallpaper roll width;
• length of wallpaper roll.

The obtained values ​​must be entered into the appropriate fields on the website of the online calculator and you will get the finished result.

As an example, we will use the online calculator available on the website, using the same initial data as for the first two examples. We enter the available values ​​in the appropriate fields and get the same result - 9 rolls of wallpaper required to cover this room.

Traditionally, renovating a room is not complete without changing the wallpaper. But on the market of modern finishing materials there are many wallpapers of different types, colors, sizes and other characteristics. How to optimally calculate the required amount of this material?

So, it was decided to change the wallpaper, but what is the best way to calculate the necessary materials so as not to overpay and then not buy the missing quantity (especially since batches of the same wallpaper may differ in color, pattern, texture)? Is there a general principle of calculation for all types of wallpaper or should it be calculated differently depending on what kind of wallpaper will be used?

First you need to decide:

• Which room will require wallpaper calculation (living room, hallway, kitchen)
• what type of wallpaper is planned to be used (paper, non-woven, bamboo, liquid, etc.)
• what are the dimensions of the wallpaper (length, width), pattern, texture
• Will they wallpaper the ceiling in addition to the walls?

Depending on the room in which you plan to glue the wallpaper, its type is selected. For example, velor wallpaper can be used in the living room, but in the kitchen they will be impractical and inappropriate; in the hallway, washable coverings are more suitable. Not only the dimensional, but also the quality characteristics of the wallpaper can affect the calculations.

The calculation of the number of wallpapers is affected by the following:

• dimensions (length, width) of wallpaper
• design, pattern, texture, wallpaper type
• surface area to be pasted
• surface evenness
• the presence of doors, windows, ledges, arches, etc. in the room
• design solution in the design of the room (sometimes different colors and types of wallpaper are used).

Of course, the rooms are different, and the wallpaper rolls are also of different lengths. There is a general formula that works for any type of wallpaper:

R: V: 3(or 4 - depending on whether the pattern needs to be adjusted or not).

Where P is the perimeter of the room, B is the width of the roll.

The figure obtained using this formula is rounded up to a larger number. Of course, those who like more accurate calculations will need more accurate measurements and taking into account other parameters.

How to calculate the required number of rolls.

In order to calculate correctly, it is not necessary to specifically invite builders; all calculations can be done independently. The main thing is to measure everything accurately. Therefore, it is worth arming yourself with a construction tape and measuring the perimeter of the room in which renovation is planned (this is the length of all walls minus the sizes of windows and doors).

It happens that they do not plan to cover the entire surface of a room with wallpaper (for example, the calculation is being made for the kitchen, and the wallpaper will be glued together with the tiles), then you need to subtract the area that the tiled apron will occupy from the area of ​​the entire room.

It is important to note: if you choose wallpaper with a pattern, then its consumption increases by 1.5 times, since the pattern will need to be adjusted.

To correctly calculate wallpaper, it is important to know the exact dimensions of the room, the number and area of ​​window and door openings.

2AH + 2BH =S

S is the required total area of ​​the walls of the room,
H – room height,
A is the length of the room,
B is the width of the room.
If the length of the walls is not the same, and their number is not 4, but, for example, 5, then there is no need to multiply by two, and the formula can be like this:

S = AH + BH + CH + DH. And here: A is the length of the first wall, B is the second, C is the third, D is the fourth.

This formula is suitable if the height of the walls is the same, but their lengths differ. If the height is different (for example, there may be a podium, steps), then it must be indicated differently.

It is important to consider:

In order for the calculations to be accurate, you need to measure not by eye, with steps, elbows (especially since steps and elbows can be different for people), but with a ruler or tape measure.
It is better to record the measurement results in centimeters and as accurately as possible, without rounding.

Calculation methods

Method 1 (using old wallpaper).

If there is old wallpaper in the room and its width matches the new one, and there is no need to combine the pattern repeat, then you can simply measure the height of the wall, find out what the length of the roll of the new wallpaper is (now rolls of 18, 12, 10, 7 meters are produced) and count the number of strips of old wallpaper on the walls. By dividing the length of the roll by the height of the wall, we find out how many panels will be in one roll. Well, here it’s easy to calculate the required number of rolls.

1. Let’s say the height of the walls is 2.5 m, the roll is 10 m, strips of old wallpaper are 20 pieces.
2. 10: 2.5 = 4 (number of panels in one roll).
3. If there are 20 pieces in total, then dividing by 4, we get 5 rolls needed to cover the entire room.

If the number is a fraction, it is usually rounded up.

Method 2 (calculation “from scratch”).

If there is no wallpaper in the room anymore, the walls are cleaned, then in the calculations you can proceed as follows:

1. Find the area of ​​each wall. We first measure its length, width and multiply.
2. If there are window or door openings in the wall, calculate and subtract their area from the total area of ​​the wall.
3. If you are planning any decor, and it will occupy space where wallpaper is not needed, we also subtract the area of ​​this surface from the total area of ​​the wall.
4. Let us summarize the results obtained for all walls.
5. Knowing the length and width of the wallpaper in a roll, we can calculate the area of ​​the wallpaper.
6. By dividing the area of ​​the room by the area of ​​the roll, we find out the required number of rolls.

The same wallpaper, if released at different times, may have different shades.

Calculation for wallpaper with a pattern

If the design is pale or not very noticeable, you can proceed according to the general scheme, but it is bright and noticeable, you will have to take into account the step of the ornament. Usually the ornament step is 52-53 cm.

Calculation plan:

1. We measure the height of the wall.
2. Divide by ornament step.
3. We round the value up and get the rapport number.
4. We multiply the resulting repeat number by its value and ultimately obtain the length of the panel cut from the roll.
5. To find out the amount of waste, you need to subtract the height of the wall from the resulting length of the panel.
6. Next, dividing the length of the roll by the length of one panel, we obtain a coefficient that will help determine the number of rolls required.
7. We multiply the resulting coefficient by the difference obtained in step 5.
8. The number obtained in step 7 is subtracted from the total length of the roll.
9. If the total area of ​​the room that you plan to cover is divided by the number from step 8, you will get the required number of rolls.

Let's say:

• the length of the roll of wallpaper that is planned to be pasted is 10 m,
• ornament step – 0.53 m,
• wall height 2.8 m,
• total room area – 43 sq.m.

The calculations will be as follows:

1. 2.8 m.
2. 2,8: 0,53 = 5,28
3. Round up to 6.
4. 6X 0.53 = 3.18.
5. 3.18 – 2.8 = 0.38 m (or 38 cm).
6. 10: 3.18 = 3.14 (coefficient).
7. 3.14 x 0.38 = 1.19
8. 10 – 1.19 = 8.81m.
9. 43: 8.81 = 4.8 (i.e. optimally 5 rolls will be required per room in this example).

Rolls come in different sizes, but these calculation methods are suitable for any wallpaper: you just need to substitute the numbers that reflect the size of the selected wallpaper.

Calculation of the required amount of liquid wallpaper.

If liquid wallpaper is chosen to decorate the room, then the specifics of the calculations change slightly, but the total area of ​​the working surface will still have to be calculated.

To determine the amount of liquid wallpaper, you need to divide the area of ​​the walls (how to find it out is explained above) by the consumption of wallpaper per package. Usually this consumption is indicated on each package of liquid wallpaper, but on average it is 3-5 sq.m. surfaces.

For example, if the working surface area in the room is 30 square meters. m., then with an average consumption of liquid wallpaper in one package of 3 sq.m., 10 packages of such wallpaper will be required.

Depending on your experience with liquid wallpaper and the condition of the walls, it is recommended to take 1-3 packages in stock.

To calculate, you will need a measuring tape, a notepad and a calculator.

Room measurements

First, you need to measure the width, length, and height of the room in which the stickers will be pasted.

In addition, you should determine the size of door and window openings. The parameters of windows and doors will help you make the calculation more accurate and not take into account the area that does not need to be covered.

How to calculate wallpaper for a room along the perimeter

The first step is to calculate the perimeter of the room, which is equal to:

Perimeter = (length of one wall + length of adjacent wall) * 2

Calculation of the estimated height of the canvas

To find out how long your wallpaper will be, use the formula:

Estimated strip height = room height + ornament step (rapport) + allowance for upper and lower allowances (5 cm)

Calculation of the number of stripes for pasting a room

To do this, you first need to measure the width of the strip of wallpaper that was chosen for gluing.

Then we calculate the number of strips required to cover the entire room:

Number of stripes per room = perimeter / wallpaper strip width

Important! The resulting numbers should be rounded up to the nearest whole value, otherwise you may end up with several centimeters of wall without wallpaper.

Calculation of the number of strips from one roll

Once we have determined the number of wallpaper strips per room, we can calculate the number of strips from one roll. To do this, you will need to find out the length of the roll (usually it is indicated on the label).

Number of strips from 1 roll = roll length / estimated strip height

Important! The resulting numbers should be rounded down to the nearest whole number so that only whole canvases are glued to the wall.

Calculation of the number of rolls per room

After all the calculations done, we can finally find out the number of rolls for covering the entire room:

Number of rolls = number of strips per room / number of strips per roll

Important! We round all the resulting numbers up, because... Rolls can only be ordered whole.

How to calculate wallpaper for a room area

Calculating wallpaper around the perimeter of a room is not always appropriate, since the presence of windows and doors is not taken into account, so you have to calculate by area.

Calculation of wall area

To calculate the area, use the following formula:

Total area = wall length * wall height

Now let's calculate the area of ​​the walls that will be covered with wallpaper. To do this, you will first need to calculate the area of ​​window and door openings, and then use the formula:

Wallpapering area = total area - area of ​​windows and doors

Calculation of the number of rolls

A standard roll 53 cm wide and 10 m long is usually enough for 5 sq.m. rooms.

To calculate the number of rolls for the entire room you need:

Number of rolls = room area / area that can be covered with 1 roll

Important! Round the resulting number up.

If your wallpaper has a pattern

If there is a large pattern on the wallpaper, find out its report, and then calculate the height of the ceiling that is a multiple of it and carry out calculations with it.

For example, the wall has a height of 2.6 m, and you decided to purchase wallpaper with a pattern pitch of 40 cm. It turns out that you need to cut it into pieces of 2.8 (0.4 * 7), because if you cut by 2.6, the pattern will not match.

So you recalculate everything that you measured, only as if your walls were 2.8 m high, and not 2.6.

Hints

If you are still not sure of the correctness of your calculations, then below are the help tables.

How to use tables?

First, you need to calculate the perimeter or area of ​​the room, depending on which table you will use.

Area tables:

To use the table below, you need to determine the length of the roll, and also make sure that the width of the wallpaper strip is 50 cm. Then you can easily determine the number of rolls you will need.

For the following table, in addition to the area of ​​the room, you will only need to measure the height of the ceilings. After this, you can find out the required number of rolls per room.

Perimeter tables:

In order to use the tables below, you will need to decide on the strip width of the selected wallpaper, as well as the length of the roll. After this, you measure the height of the ceiling and look at the table to see how many rolls of wallpaper will be needed.

Roll size (strip width / roll length = pasting area): 0.53 m / 10.05 m = 5.33 sq.m

Roll size: 0.53 m / 15 m = 7.95 sq.m

Roll size 1.06 m /10.05 m = 10.65 sq.m

Wallpapering requires care and proper preparation. We are talking about determining the amount of wallpaper that will be required for the job. This is where the difficulty arises, since not everyone is able to carry out the calculations on their own.

But in reality there is nothing super complicated in this procedure. It is important to take correct measurements on several parameters and take into account a number of additional factors. Let's talk about how to perform calculations and what to pay close attention to.

Calculating wallpaper for a room - correctly and without extra effort

The option of carrying out calculations seems appropriate. There are many online calculators on the Internet through which you can perform all the required operations. But you shouldn’t trust them too much - it’s impossible to take into account all the nuances there. Manual calculations are more accurate and are preferable.

Calculation of rolls by room area:

They are performed in this order:

1. Measurements of the parameters of the required room. To do this, determine the length of the room, its width and height. If there is a suspended ceiling or baseboards, their dimensions are not taken into account. You should be extremely careful when measuring the gaps above window and door openings, niches and protrusions. If you combine wallpaper or inserts into it, you should initially think through the scheme of work and then proceed to measurements;
2. If you carry out calculations along the perimeter, you need to multiply the width with the height, and then multiply the resulting value by 2. For example, length = 6 m, width = 4 m, add the values ​​and multiply them by 2, we get a total of 20 m. Let’s take this as an example meter wallpaper - with a roll length of 10 m and a width of 1 m, 20 strips will be needed;
3. Calculations by area involve multiplying the sum of the width and length by the height of the room, followed by multiplying the totals by 2. That is, (4+6x2.5)x2=50 sq.m. A roll 1 m wide and 10 m long has an area of ​​10 sq. m. It follows that the number of rolls is 50/10 = 5 pieces.

When choosing wallpaper, remember that models with a pattern require taking into account the displacement of the canvas. The offset is equal to the height of the gap that exists between the repeating elements. Information about this can be found on the markings on the packaging of the rolls or you can measure it yourself.

Calculation for one wall

After the basic measurements have been taken and the need for the total amount of material has been determined, you should calculate the wallpaper for one wall. The algorithm of actions does not differ at all from the one described. The difference is that one wall with all its protrusions, niches and other structural elements is taken as the basis.

The calculations themselves can be carried out both by area and by perimeter. There is no particular significance - the main thing is to carry out all the measurements correctly.

How to calculate the required footage

Well, all that remains is to figure out how to calculate the wallpaper footage, that is, the total length of the coating that will be required for the job. The process is not particularly difficult and even those users for whom wallpapering is an unusual curiosity and not a familiar process can easily cope with it.

The table for calculations includes a little - the height of the room, and accordingly the length of the strip, as well as the total number of strips around the perimeter of the room. By multiplying the values, minus windows, doors and other things, you can get the footage that will be needed during work.

How to calculate the number of rolls

The length of one canvas is known, we calculated the number of canvases that is required. All that remains is to divide the footage of the required wallpaper by the number of canvases that one roll can contain. This way we will know how many rolls are needed.

For example, 20 canvases are needed per room, the length of the canvas reaches 2.5 m, the length of one roll is 10 m. It turns out that one roll can accommodate 4 canvases. It follows that the entire gluing work will require 5 rolls.

When answering the question of how many rolls you need, you need to remember to buy additional ones in reserve. The fact is that in the process of work, emergency situations arise. No one is safe from marriage. And buying the missing piece in the future can be problematic, since wallpaper even from the same series may have differences in shades.

It must be remembered that over time, the fabric may become abraded, become dirty, or become mechanically damaged. Here you simply cannot do without gluing a new canvas.

How to calculate liquid wallpaper

Let’s also consider the issue of calculating liquid wallpaper. The main difference from other variations is the complete absence of seams. Thanks to this, it is possible to form a holistic and logically complete coating with excellent aesthetics.

The formula of the material is characterized by its safety and environmental friendliness, which makes it possible to use this type of finishing with virtually no restrictions. You just need to correctly determine the number of packages that will be required to cover the planned area of ​​the premises.

Information about this is available on each package. Often the consumption varies between 3-5 sq.m. on a flat surface. We take the average value of 4 square meters. We determine that for an area of ​​50 square meters, approximately 12.5 packages (50/4) will be required. You should purchase liquid wallpaper with a reserve, about 1-3 packages per room, depending on the size and complexity of the structural elements. Applying the substance to an uneven surface may entail additional costs - you should prepare for this in advance.

As you can see, nothing too complicated. You just need to be careful and careful, remembering that even a minor mistake can have serious consequences. There is no need to rush if this is your first time doing this procedure. It’s much easier to double-check once again than to later “rack” your brain about where to find the missing couple of meters of wallpaper. Remember - even seemingly insignificant details should be taken into account. Good luck with your calculations and apartment renovation.

Have you finally decided to re-wallpaper your room? It’s time for old wallpaper to retire and you’re wondering how to calculate the quantity, how many rolls do you need? The answer is further...
The most common size of wallpaper is a 10-meter roll, half a meter wide, 10 m x 0.53 m. It is enough to cover about 5 square meters of wall and or ceiling. There are rolls of wallpaper 15*0.53 m, 10*1.06 and 25*1.06 m long.

Wallpaper calculation

1. First measure the perimeter of your room. Do not forget to remove from the result the perimeter of the surface that is not subject to pasting; these are windows and doors, (6.5+4) x 2 = 21 m.

1. And then, divide the resulting number by the width of the roll (usually 50 cm). The resulting figure shows the number of stripes, 21 / 0.53 = 40 stripes.

1. Measure the height of your walls (remember to add a little extra for later trimming, say 5 cm) 2.50 + 0.05 = 2.55 m

1. Then count the number of strips in the roll, 10/2.55 = 3

1. Now divide the number of strips by the number of strips per roll to determine the number of rolls, 40/3=14 rolls

Special cases

If there are ledges or recesses in the door niches, then add 1-2 additional rolls of wallpaper.

If you use wallpaper with patterns, you need to add a margin to the height calculation to adjust the pattern: 2.50 + 0.05 (cutting off excess) + 0.30 (adjusting the pattern) = 2.95 m.

Ceiling calculation

Everything is the same with the ceiling. However, lately wallpapering the ceiling has not looked elegant. Today, many relief ceiling tiles have appeared that look more organic and aesthetically pleasing.

Don't forget to buy one or two additional rolls of wallpaper. Especially if the connections are in a checkerboard pattern, also for your mistakes, the displacement is higher and lower.
- Be sure to pay attention to the wallpaper series number. If the series are different, the difference in color and brightness will be noticeable after pasting.

How to save money?

If you made a mistake in the calculation, and it is no longer possible to purchase such wallpaper, then you can purchase similar ones. And decorate some of the walls with different wallpaper. In fact, this option looks very modern and non-standard. At the same time, the viewing areas will change, that is, from different parts of the room its view will be different, which will also have a pleasant effect on its perception.
The option of not pasting behind the sofa and closet is not for everybody.

Calculator to help you

If you are not sure about the calculations, you can also use a ready-made table to determine the number of rolls of wallpaper:

Use the following table to calculate wallpaper:

Roll size 0.53 / 10.05 m = 5.33 m2

Roll size 0.53 / 15m = 7.95m2

Roll size 1.06m /10.05m = 10.65 m2

Roll size 1.06 / 25m = 26.50m2