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Traditionally, renovating a room is not complete without changing the wallpaper. But there are many wallpapers on the market of modern finishing materials. 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 it? necessary materials so as not to overpay and then not to buy the missing quantity (especially since batches of the same wallpaper may differ in color, pattern, texture)? Does it exist general principle calculations for any type 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 room decoration (sometimes used different colors and types of wallpaper).

Of course, the rooms are different, and the wallpaper rolls are also of different lengths. Exists general formula, which 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.

For correct calculation wallpaper is important to know exact dimensions rooms, number and area of ​​windows and doorways.

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. Dividing the area of ​​the room by the area of ​​the roll, we find out required quantity rolls

Same wallpaper if released in different time, may differ in shades.

Calculation for wallpaper with a pattern

If the pattern is pale or not very noticeable, you can proceed as follows: 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 get 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 = 8.81 m.
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 experience with liquid wallpaper and depending on the condition of the walls, it is recommended to take 1-3 packages in reserve.

Wallpaper calculator designed to calculate the number of rolls when finishing the entire room or certain walls separately. The second calculation option can be useful if it is assumed that the room contains more than 4 walls, or in cases where it is necessary to calculate wallpaper for specific areas of different sizes.

In addition, the calculation process takes into account the presence of door and window openings, which allows you to optimize wallpaper consumption and eliminate overpayments for extra materials. In addition, this is required in order to correctly calculate the area of ​​the walls, which in turn allows you to estimate the amount of glue required.

In the application, you can familiarize yourself with the standard values ​​for glue consumption. You can immediately “estimate” how much it will take wallpaper glue.

Calculation principle

There are two fundamentally different calculations for wallpaper per room - by area and by rotation of the roll on the wall. The disadvantage of the first method is that the wallpaper area is calculated as one continuous roll, i.e. When pasting, the roll may end in the middle of the wall and, accordingly, a seam will appear. The second method implies that if the remaining length of the roll is less than the height of the ceiling, a new roll is taken, and the remains of the old one are used for smaller elements, for example, under a window.

The wallpaper calculator uses last option, since it is the most rational, although it slightly increases consumption.

We should dwell in a little more detail on the calculation methodology itself. For example, the simplest case is when the wall of the room from top to bottom is a continuous surface (1). Essentially, we seem to be rolling out roll after roll along the height of the wall. Another option is when the opening completely (2) or partially (3) covers the roll. In the first case, a whole repeat is added to the segment, and in the second, a whole strip is taken, but the pasting area is correspondingly reduced.

Instructions

For the first option:

• ceiling height, m;
• width and length of the room, m;

For the second option:

• ceiling height, m;
• wall length, m;
• number of walls, pcs.

As an additional condition, you can use the “Windows” and “Doors” blocks. With their help, when calculating wallpaper, the areas that will be occupied by the corresponding structures are taken into account and/or excluded.

The tool calculates wallpaper equally correctly in situations where canvas partially or completely falls into the opening.

Also if you have other areas that are not expected to have wallpaper e.g. interior window between the living room and kitchen or furniture set, allowed use of the “Windows”, “Doors” fields for these purposes.

Then you need to fill out the characteristics related to the wallpaper itself:

• roll width, cm;
• roll length, m;
• rapport (repeat of pattern), cm;
• leveling margin, cm;
• side overlay, cm;
• whether to move the drawing;
• Cost, rub.

Let's look at some steps in more detail

Rapport- this is a repeating part of the pattern, or otherwise, a parameter that shows the cyclical repetition of the pattern in height and/or width. The value is indicated directly on the roll and measured in centimeters. If you have wallpaper without a pattern, then enter “0” in the field.

Leveling margin(trimming)- additional value for each cut of the blade in case of horizontal unevenness of ceilings/floors. The optimal size is 5-15 cm.

Side overlay- implies partial overlap of one roll with another, the so-called “overlapping” gluing technology.

Move drawing- pattern offset by 0.5 rapport. In fact, it leads to an increase in wallpaper consumption.

Use the convenient wallpaper calculator website and you will no longer have questions - how to calculate the amount of wallpaper per room?

Table for calculating wallpaper by room area

In some cases, when calculating wallpaper for a room, it is more convenient for the user to use standard tables to obtain an approximate result. We offer you an option that involves calculation based on the area and height of the room.

Wallpaper with a roll width of 53 cm and a length of 10 m (standard)

Wallpaper with a roll width of 70 cm and a length of 10 m (European)

Wallpaper with a roll width of 106 cm and a length of 10 m (meter)

Wallpaper adhesive consumption table

Unfortunately, our online calculator currently only shows the area that will need to be treated with glue, but does not provide actual data on consumption. For the convenience of visitors, we have collected reference data for the most popular types of products on the market and combined them into a table so that you can immediately “estimate” how much wallpaper glue you will need.

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 process. finishing works. 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 available ways calculating 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 required quantity strips of wallpaper required for covering 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 the value equal to area the surfaces of all 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.

Despite the fact that the range of materials for renovation and decoration of houses and apartments is replenished almost every year with one or another new product, wallpaper does not give up its “leadership position” and still remains, probably, the most popular way of decorating walls in residential premises. Moreover, the widest variety modern wallpaper, manufactured using the most advanced technologies, allows finishing in any interior style, reliably imitating wall cladding by many natural materials. And if we add here the relatively low cost and opportunity independent conduct finishing work, then the popularity of wallpaper receives a completely logical explanation.

Homeowners who have decided in favor of such decoration will probably be faced with the question - how to calculate how much wallpaper is needed for a room? We will try to help them with this - a convenient online calculator is located below.

Those readers who have already done wallpapering and are therefore theoretically savvy should not have any problems using the program. Beginners may have unclear questions - some explanations on the use of the calculator and the basic principles of calculation are given below.

Apartment renovation activities begin with preparatory calculations, definitions consumables in the required quantities that may be needed during the finishing process wall covering. Before you start covering the walls in your apartment with new wallpaper, first determine the type finishing material and its quantity for pasting. The calculation must be made carefully to avoid additional problems during repair actions and unnecessary material costs. The calculator will help you calculate how much wallpaper you need in any room.

How to correctly determine the number of rolls

Before purchasing new wallpaper for covering walls, you need to make an accurate calculation of the required amount of material. Incorrect counting results in shortages or excess leftovers of purchased raw materials. When determining the required amount of raw materials, calculate the dimensions of the wall areas in the room, and then subtract the parameters of doors and windows from them. The next step is to divide the result obtained by the calculated area of ​​the new roll.

The calculation formula is not very complicated:

Number of rolls = S article: S roll. x k

S art. – area of ​​four walls;

S roll – the area of ​​the entire roll, this value is obtained by multiplying the length of the roll by their width, standard length about 10 meters, width is indicated on the package;

k – coefficient reserve is used to take into account the cost of making corners, turns, and repeating the pattern. It is equal to 1.1–1.2.

The calculator will calculate the number of rolls of wallpaper per room if you don’t want to make the calculation using a formula.

Such a calculation is in demand when planning to cover walls on your own or when turning to professional craftsmen, since using this calculation you can provide for the costs of purchasing materials.

Initial values ​​for calculating wallpaper

Basic data for calculating the finishing material:

1. wall perimeter (sum of all lengths in meters);
2. room height;
3. sheet width (the most common sizes are 0.5; 0.56; 0.6; 0.75 meters);
4. length in one package (the most common samples are 7, 10.5, 12 and 18 meters long);
5. how many windows are in the room;
6. window length and width;
7. number of doors;
8. door width and height.

The dimensions of the areas of windows and doors are needed to exclude them from the result obtained.

Features of working with large ornaments on wallpaper

You should always consider the pattern on the wallpaper. For colors that do not require joining or adjustment, you can purchase the amount of material obtained using costing. In this case, no additional calculations are needed.

When choosing a material with large fragments the ornament requires joining, standard actions using calculation are not appropriate. Practically, experts recommend adding two rolls if the room area is no more than 22 square meters.

It is necessary to take into account the pattern - waste is directly proportional to the size of the rapport. It is indicated on the packaging label. Rapport is the frequency of repetition of a fragment on a trellis. The pattern must be correctly combined between adjacent canvases.

Tip: when choosing wallpaper material, you must carefully monitor the series number indicated on the labels so that there are no differences in shade and color saturation in different packages.

Choosing the Right Calculator

The calculator makes calculations with an increase of 10 cm for one cut strip of the workpiece.

The wallpaper calculator allows you to quickly determine the number of wallpapers in rolls and square meters, this allows you to reduce the time spent preparing for the main work. The online calculator makes calculations taking into account raw material savings, subtracting the area of ​​windows and doors, adding 10% on possible marriage and trimmings. After receiving the calculated result, it is necessary to round it to the whole roll.

Tip: when choosing a suitable calculator for counting wallpaper, you need to make sure that it is able to take into account not only the usual parameters of the room, but can also make complex calculations taking into account the size of the repeat and the parameters of the roll. The amount of repeat is added to the length of each piece of wallpaper for ease of comparison of patterns on adjacent canvases.

When choosing wallpaper with large drawings, plants and other complex shapes, it is necessary to calculate the number of repeats per cut piece. The number of rolls directly depends on how long the period of repetition of the same pattern will be. The product label contains information about the amount of rapport.

When calculating the calculation, the dimensions of niches, ledges and other complex areas in the premises are not taken into account. A decision is made whether to seal the areas closed with furniture, shelving, wardrobes. Even places behind lonely chests of drawers or sideboards are considered.

The wallpaper calculator by room area calculates the consumption of materials in the most simplified way. It is enough to measure along the baseboard using a tape measure the length of all four walls, the height from floor to ceiling, indicate the length and width of the selected finishing material. As a result, a very rough calculation of the amount of wallpaper for a given home is performed.

The wallpaper calculator taking into account doors has the ability to make a more economical calculation taking into account the area of ​​the doorway that does not require pasting. When calculating wallpaper consumption, door dimensions are subtracted from the total result.

In order to more accurately determine the required amount of finishing material, use a wallpaper calculator taking into account windows. Data on the length, width and number of window openings are taken into account in the overall calculation. This method allows you to get a more accurate budget result.

Calculating the wallpaper calculator online gives the most correct result. It helps to accurately calculate the following quantities:

• the number of wallpapers in rolls and square meters required to cover the room;
• the amount of glue required;
• the amount of money to purchase all materials;
• dimensions of the remaining pieces after the work performed in square meters and rolls.

For detailed operational calculations, you need to enter the necessary data in special columns:

• length and width of the roll in meters;
• the size of the field to be glued, if the gluing will be done overlapping;
• price of one roll;
• cost of adhesive material;
• the amount of repeat indicated on the packaging;
• length and height of each wall in meters;
• window width and height in meters;
• number of windows;
• height and width in meters of doors and their number.

After filling out all the necessary fields, just click the “calculate” button and get reliable information.

Tip: if the wall of the room is made with niches or projections, then you need to add their detailed parameters to the total length of the wall. Wallpaper is consumed in larger quantities due to processing additional angles. When purchasing, you need to purchase two rolls as a reserve in case the coating on the walls is damaged as a result repair work, children's pranks or games with pets. count how much wallpaper you need

Simplified calculation method

When choosing wallpaper that does not require joining and adjusting the ornament, the calculation is simpler:

1. The calculator itself will find the perimeter of the room by adding the lengths of all four sides.
2. Determines the number of finished canvases for a given room by dividing the perimeter by the width of the sheet.
3. Calculate how many panels fit in a whole roll by dividing the actual length of the roll by the height of the wall. This will show the number of material scraps.
4. Calculate the number of rolls for a given room by dividing total number canvases by the number of them in one roll.

The online calculator will calculate wallpaper quickly and will not require multiplication and division on paper in a column.