How to measure how much wallpaper you need per room. Calculation of wallpaper for the room. Required tools. Taking measurements and counting. How many wallpapers to buy

Apartment renovation activities begin with preparatory calculations, definitions of consumables in the right quantities that may be needed in the process of finishing the wall covering. Before pasting the walls in the apartment with new wallpaper, the type of finishing material and its quantity for pasting are initially determined. The calculation must be made carefully in order to avoid additional problems during repair operations 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 buying new wallpaper for pasting walls, you need to make an accurate calculation of the required amount of material. Incorrect counting leads to shortages or leftovers of surplus purchased raw materials. When determining the required amount of raw materials, the dimensions of the wall areas in the room are calculated, and then the parameters of doors and windows are subtracted 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 st.: S roll. x k

S st. - area of four walls;

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

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

The calculator will calculate the number of wallpaper rolls per room if there is no desire to calculate using a formula.

Such a calculation is in demand when planning wall pasting on your own or when contacting professional craftsmen, because using this calculation, you can provide for the cost of purchasing materials.

Initial values for wallpaper calculation

Basic data for calculating the finishing material:

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

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

Features of working with large ornaments on wallpaper

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

When choosing a material with large fragments of the ornament, docking is required; standard actions using costing are not appropriate. In practice, the masters recommend adding two rolls if the area of the room is not more than 22 square meters.

It is necessary to take into account the pattern - the 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 aligned between adjacent canvases.

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

Choosing the Right Calculator

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

The wallpaper calculation calculator allows you to quickly determine the number of wallpapers in rolls and square meters, this allows you to reduce the time to prepare for the main work. The online calculator makes the calculation taking into account the savings in raw materials, subtracting the area of windows and doors, adding 10% for possible marriage and trimming. After receiving the calculated result, it is necessary to round it up to a whole roll.

Tip: when choosing a suitable calculator for calculating wallpaper, you need to make sure that it is able to take into account not only the usual parameters of the room, but also can perform complex calculations, taking into account the size of the rapport, roll parameters. The rapport value is added to the length of each piece of wallpaper for the convenience of comparing the ornament on adjacent canvases.

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

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

The wallpaper calculator for the area of \u200b\u200bthe room calculates the consumption of materials in the most simplified way. It is enough to measure along the plinth with 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 approximate calculation of the number of wallpapers for a given dwelling 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 gluing. When calculating the consumption of wallpaper, the dimensions of the doors 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. The given length, width and number of window openings are taken into account in the total calculation. This method allows you to get a more accurate budget result.

Calculation 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 for pasting the room;
the amount of glue needed;
the amount of money to purchase all materials;
the size of the residual pieces after the work done in square meters and rolls.

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

length and width of the roll in meters;
the size of the glued field, if gluing will be done with an overlap;
price of one roll;
cost of adhesive material;
the rapport value indicated on the package;
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 in all the required columns, just click the "calculate" button and get reliable information.

Tip: if the wall of the room is made with niches or ledges, then you need to add their detailed parameters to the total length of the wall. Wallpaper will be used up in larger quantities due to the processing of additional corners. When buying, you need to purchase two rolls in reserve in case the wall covering is damaged as a result of repair work, children's pranks or games with pets.calculate how much wallpaper you need

Simplified Calculation Method

When choosing wallpapers that do not require joining and fitting the ornament, the calculation is simpler:

The calculator itself will find the perimeter of the room by adding the lengths of all four sides.
Determine the number of finished canvases for a given room by dividing the perimeter by the width of the sheet.
Calculates how many banners 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 scraps of materials.
Calculates the number of rolls for a given room by dividing the total number of sheets by the number of them in one roll.

The online calculator will calculate the wallpaper quickly and you do not need to multiply and divide on paper in a column.

The question - how to calculate how much wallpaper is needed per room - is not an easy one, because no one wants to overpay for the leftovers or, conversely, buy a few more rolls. And if the desired color is not left in the store, then the problem is - where to look for them now? In order not to complicate your life, before buying a wall covering, learn how to calculate the required number of wallpapers.

Advice! If before buying new wallpaper you have not yet removed the old ones from the walls, you can count how many old sheets are pasted on the wall. But when gluing a new coating, keep in mind that the width of the new ones must be equal to the width of the old ones, otherwise the advice does not work.

Preliminary measurements of the room

Measurement accuracy is the basis of any calculation. For all measurements and in order to calculate the amount of material per room correctly, you will need:

construction tape measure or measuring tape;
calculator;
paper and pen for recording results.

First, measure the length and width of the room, as well as the height of the ceiling. You should not take into account the level of the walls, and the dimensions of windows and doors must be measured separately - these data will be useful in the calculations. If the design provides for a wide ceiling baguette, a box or suspended ceilings, their width should be taken away.

Measure carefully:

protrusions;
niches;
space above doors and windows.

Advice! If the room has an uneven ceiling, it is recommended to measure the wall in the highest place.

Calculation of wallpaper around the perimeter of the room

One way to calculate the number of pieces of wallpaper is to calculate the perimeter of the space walls. In a similar way, you can calculate how much wallpaper you need to finish the ceiling.

Attention! For those who have forgotten the formula for calculating the perimeter: you need to add the length of one wall to the length of the adjacent wall, and multiply the result by two. Please use a calculator to avoid mistakes.

Gone are the days when all wallpapers had a standard width. Modern manufacturers offer a decorative coating of the following width:

When calculating, consider whether there is a pattern on the wallpaper or not. Wallpaper with a report (an element of a pattern that is repeated on the wallpaper) requires a margin for selection. If you chose with a large pattern, in the calculations you will have to add up to 0.7 m to the selection for each sheet. Before starting the calculations, measure how much the length of the report “takes” in your case. Plain coatings without a pattern do not require any supplies.

Important! If the design of the room provides for canvases of several types, first consider the gluing scheme, and only then calculate the quantity.

Let's start with the calculations. Necessary:

Attention! In order not to make a mistake down in the calculations, the numbers should be rounded up to a whole value, and up.

Calculation by room area

The above method has one drawback - the presence of windows and doors in the room is not taken into account, so you will still have extra materials. An alternative way is to calculate by the area of \u200b\u200bthe walls. For this you need:

To calculate the total area - multiply the length and height of the wall.
Calculate the area to be covered. First you need to calculate the area of window and door openings (multiplying their height and width). Further, from the total area of \u200b\u200bthe room (calculated in paragraph 1), subtract the total area of \u200b\u200bwindows and doors.
Count the number of rolls. Standard wallpaper 0.53x10 m can cover 5 square meters.
The final calculation of the number of rolls is the pasting area (number from point 2) divided by the area that can be pasted with one roll (for example, as in point 3).

Important! If you have chosen non-standard, for example, meter-long wallpaper, it is easy to find out the size of the surface that can be glued with one roll. To do this, multiply the width and length of the roll or carefully study the label, it may contain this information, which will save you from unnecessary manipulations with the calculation.

How to check your calculations

There are ready-made tables in which the number of standard rolls for rooms with typical dimensions has already been calculated. If you counted along the perimeter, check the resulting value:

take a look at the series. The numbers on all rolls must be the same, otherwise there may be a difference in color and brightness;
the material may be defective, so it is worth deploying and checking all rolls after purchase;
even in wallpaper with a small pattern there may be a report that is invisible at first glance;
you can reduce material consumption if you cut strips not from one roll, but from several at the same time;
walls above the door and window openings are recommended to be glued with leftovers and trimmings, but the image on the sides must match;
glue the inner corners, you need to start from a new piece;
glue the outer corner, overlap the wallpaper or just wrap the corner;
sometimes, to align the corner, you need a thin strip, the length of which is a whole sheet, take this fact into account when calculating the consumption of wallpaper.

How to calculate the required number of rolls.

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

It happens that in the room they do not plan to wallpaper the entire surface (for example, the calculation is for the kitchen, and the wallpaper will be glued along 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 consider: if a wallpaper with a pattern is chosen, then their consumption increases by 1.5 times, since the pattern will need to be adjusted.

For the correct calculation of 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 desired total area of the walls of the room,
H is the height of the room,
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 you do not need to multiply by two, and the formula can be as follows:

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 vary. If the height is different (for example, there may be a podium, steps), then you need to specify it differently.

It is important to consider:

For the calculations to be accurate, you need to measure not by eye, steps, elbows (especially since steps and elbows can be different for people), but with a ruler, a tape measure.
It is better to record the results of measurements in centimeters and as accurately as possible, do not round.

Calculation methods

1 way (on old wallpaper).

If there are old wallpapers left in the room and they are the same width as the new ones, and you don’t need to combine the pattern repeat, then you can simply measure the height of the wall, find out how long the roll is in the new wallpaper (rolls of 18, 12, 10, 7 meters are now 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 turn out in one roll. Well, here it is already easy to calculate the required number of rolls.

Let's say the height of the walls is 2.5 m, the roll is 10 m, the strips of old wallpaper are 20 pcs.
10: 2.5 = 4 (number of panels in one roll).
If there are 20 segments in total, then dividing by 4, we get 5 rolls necessary for pasting the entire room.

If the number turned out to be fractional, then it is usually rounded up.

Method 2 (calculation "from scratch").

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

Find the area of each wall. Pre-measure its length, width and multiply.
If there are window or door openings in the wall, calculate and subtract their area from the total area of the wall.
If any decor is planned, and it will occupy a space where the wallpaper will not be needed, we also subtract the area of \u200b\u200bthis surface from the total wall area.
We summarize the results obtained for all walls.
Knowing the length and width of the wallpaper in a roll, we can calculate the area of the wallpaper.
Dividing the area of the room by the area of \u200b\u200bthe roll, we find out the required number of rolls.

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

Calculation for wallpaper with a pattern

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

Calculation plan:

We measure the height of the wall.
We divide the ornament by a step.
We round the value up and get the rapport number.
We multiply the resulting rapport number by its value and as a result we get the length of the panel cut off from the roll.
To find out the number of waste, you need to subtract the height of the wall from the resulting length of the panel.
Further, 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.
The resulting coefficient is multiplied by the difference, which was obtained in paragraph 5.
The number obtained in paragraph 7 is subtracted from the total length of the roll.
If the total area of \u200b\u200bthe room that is planned to be pasted over is divided by the number from clause 8, the required number of rolls will be obtained.

Let's say:

length of a roll of wallpaper to be pasted, 10m,
ornament pitch - 0.53 m,
wall height 2.8 m,
the total area of the room is 43 sq.m.

The calculations will be as follows:

2.8 m
2,8: 0,53 = 5,28
Round up to 6.
6X 0.53 = 3.18.
3.18 - 2.8 \u003d 0.38m (or 38 cm).
10: 3.18 = 3.14 (ratio).
3.14 x 0.38 = 1.19
10 - 1.19 \u003d 8.81m.
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 those numbers that reflect the size of the selected wallpaper.

Calculation of the required amount of liquid wallpaper.

If liquid wallpaper is chosen for finishing the room, then the specifics of the calculations change slightly, but you still have to calculate the total area of \u200b\u200bthe working surface.

To determine the amount of liquid wallpaper, you need to divide the area of \u200b\u200bthe walls (how to find it out, explained above) by the consumption of wallpaper in one 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 sq. 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 the experience with liquid wallpaper and the condition of the walls, it is recommended to take 1-3 bags in stock.

If docking and fitting of the pattern is not required, then the calculation will be simple:

How to find out the perimeter of a room?

The perimeter is the sum of the lengths of all sides. We measure all the walls of the room and add up their lengths.
Example:
Let's calculate the perimeter of the living room with a size of 5x6 m. Add the length of all its walls - and get 22 m.

How many panels do you need to cover a room?

To find out how many wallpaper strips you need for a particular room, divide the perimeter by the width of the rolls.
Example:
The perimeter of our room is 22 m, and the width of the wallpaper is 1.06 m. Divide 22 by 1.06 and get 20.75. We round the result up - and we get 21 panels.

How many sheets will one roll last?

To calculate the number of full panels in one roll, divide its length by the height of the ceiling.
Example:
The length of a wallpaper roll is usually 10 m. The height of our room is 2.75 m. Masters recommend adding an additional margin of 10 cm to the ceiling height for ease of gluing. Thus, the value of the height of our ceiling will be 2.85 m. If we divide the length (10 m) by this number (2.85 m), then we will get 3 full strips from one roll.

How many rolls of wallpaper will you need?

To find out, you need to divide the number of all panels in the room by the total number of panels that are obtained from one roll.
Example:
In our case, the calculation will be as follows: 21 (the number of panels) is divided by 3 (panels from one roll) and we get 7 rolls of wallpaper with a width of 1.06 m and a length of 10 m.

If you are gluing wallpaper with a large pattern

You will need to follow the neat fit of the stripes for an even pattern match. This is true for designs with large geometric patterns, images of plants and other large shapes. Here you need to take into account rapport - the distance through which the same pattern is repeated. You need to count how many rapports fall on one length of the panel. The larger the rapport, the more rolls you will need to cover spacious rooms. The size of the rapport is indicated on the label. On the label you will find one of the following icons:

Drawing docking

Description

Free docking

Means that the wallpaper strips are glued in a standard way, without observing the pattern matching rules. Such designs do not have a pronounced pattern and can be glued without fitting.

Direct docking
(indicating report for wallpaper PALETTE is 64 cm)

With direct joining, the wallpaper strips are glued symmetrically one next to the other. Such wallpapers are glued without a special shift to match the pattern.

Offset docking
(indicating report and offset for example 64/32)

Means that the wallpaper strips must be glued with an offset. The first digit indicates the size of the rapport, the second - the number (in cm) by which the rapport needs to be shifted.
Example:
64/32 means that the pattern is repeated every 64 cm, and the next strip is shifted vertically relative to the previous one by half a report (32 cm).

In order to determine the cost of services for wallpapering by a private master, you need to know the total area of \u200b\u200bthe walls and the perimeter of the room. There are services that are calculated by square meters, such as gluing or priming. And there are services for which you need to know the running meters, for example, installation of skirting boards or gluing curbs. It is not necessary to use the services of measurers, just remember the school curriculum in geometry. This information will also help in calculating the required amount of wallpaper, glue, and so on.

Wall area = room perimeter * ceiling height

First you need to measure the width and length of the room. We must say right away that the obtained measurements of the length and width of the room must be converted into meters. For example, if the length of the room is 325 centimeters, then we consider 3.25 meters.

Room length 4.75 meters
Room width 3.25 meters

Calculate the perimeter of the room, which is equal to the sum of all sides.

P \u003d (a + b) x2, where a and b are the width and length of the room. Therefore (4.75 + 3.25) x2 = 16 meters.
The perimeter of our room is 16 meters. P=16 meters.

Now you need to measure the height of the room. We measure the height of the wall - we got 2.71 meters.
h=2.71 meters.

To get the area of the walls, you need to multiply the perimeter of the room by the height of the walls.

S walls \u003d Pxh, where h is the height of the walls.
S walls \u003d 16x2.71 \u003d 43.36 meters.

The area of the walls of our room is 43.36 square meters. meters. S=43.36 m2.

From this figure, you need to subtract the area of \u200b\u200bwindows and doors - after all, there is no need to glue wallpaper there. We have one window in the room, the area of \u200b\u200bwhich is 1.95 m 2 (1.3m x 1.5m). Door area 1.17 m 2 (0.61m x 1.92m). The sum of the areas of windows and doors that are not involved in wallpapering is 3.12 m 2.

The net area of the walls is 43.36 - 3.12 \u003d 40.24 m 2.

In cases where the room is of a non-standard size and does not look like a rectangle, you will have to calculate the area of \u200b\u200beach wall separately and then sum them up.

Table of wall areas for wallpaper and painting

Below is a table that will help you quickly determine the area of \u200b\u200bwalls for wallpapering (or painting). To calculate the indicators, the typical area of windows and doors was used. Wall area indicators vary according to the height of the ceiling of the room:

Room area, m 2	Room ceiling height 2.50 m	Room ceiling height 2.70 m	Room ceiling height 3.0 m
10	29	31	33
11	30,5	32,5	34,5
12	32	34	36
13	33,5	35,5	37,5
14	35	37	39
15	36,5	38,5	40,5
16	38	40	42
17	39,5	41,5	43,5
18	41	43	45
19	42,5	44,5	46,5
20	44	46	48
21	45,5	47,5	49,5
22	47	49	51
23	48,5	50,5	52,5