How to calculate the footage of wallpaper. Calculator for calculating the number of wallpapers. Wall Area Calculation

31.10.2019

Any repair in the apartment should begin with the preparation of a preliminary estimate to determine the required amount Supplies, which will be needed during the finishing work. If the task is to replace the wallpaper in the room, then first of all you need to determine the number of rolls required for pasting it. Correctly performed calculation will allow in the future to avoid unnecessary problems during the repair, as well as save your money.

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

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

Calculation along the perimeter of the room and the number of lanes

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

the length and width of the room are measured, on the basis of which its total 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 with which it is supposed to paste over the room;
the calculated value is rounded up to an integer value upwards and represents the required number of bands;
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 up to an integer value, which is the required number of wallpaper rolls.

Consider this calculation method using a specific example:

Example. It is required to paste over 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. Wallpaper 53 cm wide will be used for pasting and 10 m long.

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

Determine the total perimeter of the room: (7.5 + 3) * 2 = 21 m.
Determine the total width of the window and door opening: 2.1 + 0.9 = 3 m.
Subtract from the total perimeter the total width of the openings: 21-3=18 m.
Divide the resulting value by the width of the wallpaper roll: 18 / 0.53 \u003d 33.9 and round the result to an integer value - you get 34 strips required for pasting the room.
Calculate the number of wallpaper strips in one roll, for which you need to divide the length of the roll by the height of the stream: 10/2.5=4.
Divide the required number of wallpaper strips by the number of strips in one roll: 34/4 = 8.5 and round this figure up to a whole value - it turns out 9.

Thus, for pasting this room, 9 rolls of wallpaper will be required. 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 purchase an additional roll.
read in a separate review.

Calculation by the area of the pasted surface of the walls

This method is considered more accurate and economical, especially for rooms with a large area. It is based on determining the total surface area of the walls of the room to be wallpapered.

For this:

calculated total area walls 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 \u200b\u200bthe walls, resulting in a value equal to the surface area of \u200b\u200ball the walls that need to be wallpapered;
the area of the wallpaper in one roll is calculated by multiplying the width of the roll by its length;
in conclusion, the total area of walls for pasting is divided by the area of \u200b\u200bwallpaper in one roll;
the resulting value, rounded up to an integer, will be the required number of rolls for pasting the room.

Using an online calculator

If there is no desire or opportunity to carry out calculations yourself, you can use a special online calculator. Today, there are many sites on the Internet that allow you to use the services of such an online calculator for free.

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

room length;
room width;
ceiling height;
wallpaper roll width;
wallpaper roll length

The obtained values must be entered in the appropriate fields on the online calculator's web page and the finished result will be obtained.

For example, let's use the online calculator available on the site, using the same initial data as for the first two examples. We enter the available values in the appropriate fields and we get the same result - 9 rolls of wallpaper required for pasting this room.

Wallpapering walls is a quick and relatively cheap way to decorate rooms. Before heading to the hardware store, decide how much material you need for the room. To do this, you need to know how to calculate the wallpaper so that there is enough for everything and there is no surplus left.

In this article, we will consider how best to make calculations, what measurements need to be taken, what to look for when planning a purchase.

Calculation of wallpaper for a room: formula and instructions

Wallpaper you need to choose the right and calculate their number

Along the perimeter of the walls, it is easy to calculate the wallpaper for the room. The formula is as simple as possible. Use a tape measure to measure the length of two walls, add up the resulting numbers and multiply the result by 2.

For example: the length of one wall is 4 m, the other is 6 m. Thus, the perimeter is: (4 + 6) * 2 \u003d 20 m. Then the height of the ceiling is found. Let's say it is 2.5m. With this height, one roll can be divided into four equal strips, since the standard length of a roll is 10 m, and its width is 53 cm.

The total width of the four stripes is calculated by multiplying their number by the width of one strip: 4 * 53 = 212 cm. Then the perimeter is divided by 212, it turns out: 2000/212 = 9.43, the sum is rounded up to an even count and the number 10 is obtained. Thus, for a room with a perimeter of 20 m you will need 10 rolls of wallpaper. From the table below, you can find out how many rolls are required for a room with different ceiling heights and different perimeters.

Ceiling height	Room perimeter, including doors and windows, in meters
Ceiling height	9	10	12	13	14	15	16	17	18	19	21
2,15 – 2,30	4	5	5	6	6	7	7	8	8	9	9
2,30 – 2,45	5	5	6	6	7	7	8	8	9	9	10
2,45 – 2,60	5	5	6	7	7	8	9	9	10	10	11
2,60 – 2,75	5	5	6	7	7	8	9	9	10	10	11
2,75 – 2,90	6	6	7	7	8	9	9	10	10	11	12
2,90 – 3,05	6	6	7	8	8	9	10	10	11	12	12
3,05 – 3,20	6	7	8	8	9	10	10	11	12	13	13

How to calculate the number of wallpaper with a pattern

Wallpaper with a pattern is calculated differently

In order for fragments of a large pattern to match on adjacent panels, they are shifted in a certain way. A sales assistant cannot always advise on how to calculate the number of wallpapers with large patterns. Therefore, when buying them, 2 additional rolls are added to the required number of rolls.

Rapport (location of sheets relative to each other and their number on one wall) is indicated on the package. The larger it is, the more waste remains when gluing combined panels. Therefore, for large-sized premises, it is advisable to buy more additional rolls. To save on the remaining waste, you can paste over inconspicuous places: under the battery, behind the doors, etc.

Calculation of wallpaper for painting

The standard size of wallpaper for painting is the same as for ordinary ones - 10 m by 53 cm. There are other size options: 17 m by 53 cm, 33.5 m by 53 cm and others. Below is a table to calculate them:

Ceiling height (m)	Room perimeter (m)/number of rolls
Ceiling height (m)	10	15	20	25
2	2	2	3	3
2,25	2	2	3	4
2,5	2	3	3	4
2,75	2	3	4	4
3	2	3	4	5
3,25	2	3	4	5

Calculation of non-woven wallpaper

The width of the rolls of non-woven wallpaper is 100 cm. We must not forget this when dividing the perimeter of the room by the width of the panels. These wallpapers are calculated according to the same principle as ordinary ones, using the perimeter and height of the walls.

Additional ledges or corners in the room increase material consumption. When pasting the corners, an overlap is made, and then the wallpaper is cut so that the pattern on adjacent strips docks evenly. In such cases, 1-2 additional rolls are required.

Calculation of wallpaper by room area

Another calculation method is the calculation of wallpaper according to the area of the room. To find the perimeter, we use the already known indicators of length, width, height - 4.6 and 2.5 m. We find the area of one wall: (6 + 4) x 2.5 \u003d 25. We multiply the resulting amount by 2, since there are identical walls in the room 2, and get 50 square meters.

Then we calculate the area of one roll. To do this, we multiply 0.53 by 10, the product of these numbers is 5.3 sq.m and there is the total area of the roll, it can be pasted over 5 sq.m of the room.

Wallpaper for walls with a border is calculated by the area of \u200b\u200bthe walls or along the perimeter

Modern designers have invented a finishing method in which not only the wall is pasted over with wallpaper, but also a border or decorative plinth. On sale there are special wallpapers, the pattern of which is suitable for such pasting. It is applied in such a way that its elements falling on the curb fit perfectly with the elements on the wall.

Walls with a border look interesting

Manufacturers create compositions that allow you to combine wallpaper in contrasting colors and various patterns at the bottom and top of the wall. And the border will serve as a divider for the drawings.

Usually rooms with borders are faced from the ratio: 1 part to the bottom, 2 parts to the top. The number of wallpapers with such a lining is also calculated based on the perimeter.

With a ceiling height of 2.68, the length of the lower panel is 100 cm, the upper one will have to be 168 cm. From one 10-meter roll, either 10 lower parts or 5 upper ones will be obtained. Those. the length of one roll is divided by the length of each part.

If you have difficulty calculating the perimeter, you can use the following algorithm. Add the length and width, multiply the result by 2 and subtract the width of the door and window openings from the product. For example, the width of the room is 6 m, the length is 4 m. The standard width of the door is 0.9 m, the windows are 1.5 m. Mathematically, it looks like this: (6 + 4) * 2 - (0.9 + 1.5) \u003d 17.6 m, which is the total perimeter of the room.

To calculate the lower part, we divide the roll into 10 strips 53 cm wide. 53/10 = 5.3 - the area that requires 1 roll of wallpaper. Then, we divide the perimeter by this figure: 17.6 / 5.3 \u003d 3.3. Thus, for facing the lower part of the room, 3-3.5 rolls will be required.

The upper part is calculated according to the same principle. It is known that 5 upper panels are obtained from 1 roll. One roll can cover 2.6 meters of wall. Perimeter - 17.6 divided by 2.6. As a result, 7 rolls are enough for the upper part of the room.

There is another way in which we calculate the number of wallpapers by the area of \u200b\u200bthe walls. To do this, we will conditionally take the upper and lower parts of one wall as different walls. The area of each of them is found by a well-known formula. Then we add the two resulting products and multiply by 4, according to the number of walls in the room.

Calculations for combined cladding

Not always cladding is limited to just wallpapering. Modern designers offer combined solutions for wall decoration. Can be applied either different types materials, or wallpaper of different textures and colors.

The material for such repairs is calculated individually for each case. For example, you are going to highlight with a bright insert some fragment of a wall, 3 m wide. With a ceiling height of 2.5 m, 6 panels or 1.5 rolls of wallpaper will be spent on this insert. Non-woven wallpaper for this will need 1 roll, since its width is 100 cm.

Can be combined different variants finishes

Wallpaper is a convenient and practical way to interior decoration walls, which has not lost its popularity over the years. In addition, if you need to update the repair without special costs and effort, it is enough just to paste other wallpapers.

The choice of materials and colors is large enough so that everyone can choose a pattern to their liking. When choosing wallpaper, one should not forget not only about the calculation of their required number, but also about correct selection consumables (glue, brushes).

You may have some wallpaper left, and then in case of minor damage to the surface, you can glue it, hiding the defects.

If you doubt that you can stick the wallpaper yourself, seek help from specialists.

How to find out how much wallpaper you need per room? The amount, of course, depends on the size of your room. To determine the required number of trellises, we need to calculate the perimeter or area.

What is needed for this?

Firstly, this is a tape measure for measuring the room, secondly, a notebook or notepad to record the measurement results, and finally, a calculator.

Calculation of wallpaper by room area and perimeter. Simple and clear table.

First you need to measure the length and height of the room where you are going to glue the wallpaper. It is also worth measuring the door and window openings. This will help improve the calculation.

First you need to calculate the perimeter of the room:

P = (L of one wall + L of adjacent wall) * 2
P is the perimeter;
L is the length.

Estimated web length, how to calculate?

To accurately know the length of the wallpaper, you must use the formula:

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

Work begins by measuring the width of the wallpaper strips you have chosen. After that, count how many strips you need to paste the room:

N stripes per room = P / wallpaper stripe width

Counting from one roll.

Find out the length of the roll, which is indicated on the label. And then calculate according to the formula:

N strips from 1 roll = L roll / calculated strip height

N is the quantity.

Calculation of wallpaper rolls per room.

After all the work done, we will find out how many rolls are needed for pasting the room:

N rolls = N strips per room / N strips from 1 roll

Calculation of wallpaper by the area of the room.

Since, the calculation along the perimeter may not always be relevant, because the number of doors and windows is not included in the calculation, because of this, the amount is calculated by area.

We measure the area of \u200b\u200bthe walls using the following formula:

SO = L wall * H wall
S is the area;
SO - total area;
H is the height.

You also need to calculate the area of \u200b\u200bthe walls on which you will glue the wallpaper. But before that, you need to calculate the sum of door and window openings. And then use this formula:

S wallpapering \u003d SO - S windows and doors

If the roll fits the standard 53 cm wide and 10 m long, it is designed for approximately 5 sq.m. rooms.

To calculate you need:

N rolls = S rooms / S that can be glued with 1 roll

Is there a pattern on your wallpaper?

If there is a drawing on your wallpaper, first of all you need to find out its report, and then calculate the final ceiling height for it and carry out the calculation along with it.

Using tables

In order to use the table, you need to know the perimeter and area of the room. It depends on which table you need to use.

Calculation by area, table:

To use this kind of table, you must know the height and square of the room. And then you can easily find out the required number of rolls.

Table #1 53

Ceiling height up to 2.5 meters		Ceiling height 2.6 - 3 meters
Room area	Number of rolls	Room area	Number of rolls

Table number 2 designed for wallpaper equal to the width 70 centimeters and 10 meters long.

Ceiling height up to 2.5 meters		Ceiling height 2.6 - 3 meters
Room area	Number of rolls	Room area	Number of rolls

Table #3 designed for wallpaper equal to the width 106 centimeters and 10 meters long.

Ceiling height up to 2.5 meters		Ceiling height 2.6 - 3 meters
Room area	Number of rolls	Room area	Number of rolls

Perimeter calculation, table:

To use the table below, you need to calculate the width of the stripes and the length of the wallpaper you have chosen. After that, you need to measure the height of the ceiling and look at the table, how many rolls you will need.

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

Height	Room perimeter, m
Height	6	8	10	12	14	16	18	20	22	24	26	28	30
up to 2.4m	3	4	5	6	7	8	9	10	11	12	13	14	15
2.4-3.5m	4	6	7	8	10	11	12	14	15	16	18	19	20

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

Height	Room perimeter, m
Height	6	8	10	12	14	16	18	20	22	24	26	28	30
up to 2.4m	2	3	4	4	5	6	7	7	8	9	10	10	10
2.4-3.5m	3	4	5	6	7	8	9	9	10	11	12	13	14

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

mass preceded preparatory stages. This is the choice of a suitable design, and the preparation of the wall, as well as the calculation of the number of wallpapers per room. In this article, we will analyze all the necessary nuances of such a task.

General provisions

Let's devote a few words to the choice of such. Why are they most often used for interior design? The reason for this is that they have many advantages.

Advantages

Huge range of different colors and ornaments, as well as materials used to create products.

Flexible price. There are both very cheap models and incredibly expensive ones. To a greater extent, this is influenced by the presence of expensive raw materials in the structure.

Easy to apply by hand. Wallpapering does not require special skills and is easy to implement on your own.

Protecting the surface of the walls and masking their minor flaws.
Ease of preparing a preliminary estimate. Calculating the number of wallpaper rolls per room is much easier than, for example, calculating the required volume of paints and varnishes.

The need for budgeting

There are three most important reasons why you need to calculate wallpaper rolls per room:

In order not to be without at the very peak repair work. Agree, running while the glue dries headlong in search of a missing roll is not very fun. Moreover, a similar shade can be generally problematic to find.
In order not to buy extra products. If we are talking about cheap paper samples, then it’s okay, you can collect with a margin, in case restoration is necessary. But if it is natural or textile wallpaper, then an extra roll will significantly hit your family budget.

And the last reason is that you simply need to know how much you need to go to the store with.

We believe

You will need the following things to carry out the calculations:

Required Tools

Roulette for carrying out the necessary measurements;

Pencil and a blank sheet of paper for making notes;

Calculator to quickly cope with the calculations.

We take measurements

The calculation of wallpaper consumption per room will not be correct without exact linear dimensions:

First, measure the perimeter of the room. Let in our case it will be 18 meters.

Then the height of the ceilings. Usually it is two and a half meters. If you use products with a pattern, then to fit it you need to add another thirty centimeters.

Tip: it is also recommended to immediately take into account some margin that compensates for the unevenness of the walls, and add another five centimeters. Since it is much easier to cut off the protruding edge than to try to close up a translucent wall with segments.

You will also need the parameters of doors and windows. After all, they do not need to be glued, so why buy extra material? For example, let's say that the result is eight square meters.

The width of the classic wallpaper is 53 centimeters, and the length is 10 meters and 5 centimeters.

Tip: if you plan to use wallpaper for painting, then pay attention to the marking of the rolls. Since they usually differ significantly in size from standard products, and this must be taken into account in the calculations.

Formula

Instruction:

We multiply the perimeter (P) by the height (H), taking into account the required margin: 18 × 2.85 = 51.3 m 2. This is the total area of \u200b\u200bthe walls (S o).
But in the room there are door and window openings(S p), which we measured in advance, therefore 51.3-8 = 43.3 m 2, which will be the final area (S and).
We find out the surface of the roll by multiplying its length (h 1) by the width (h 2) 10.05 × 0.53 = 5.33 m 2 (S p).
We divide the required coverage area by the area of one roll and get: 48.3 / 5.33 = 9 units of rolls are necessary for the complete finishing of the room in question.

The single formula for calculating wallpaper for a room will look like this: (P × h-S p) / (h 1 × h 2). You just have to substitute the data that you will receive after multiplying all the necessary dimensions: P is the perimeter of the room, H is the height of the ceilings, adjusted for cutting, S p is the area of \u200b\u200ball openings in the room, h 1 is the length of one roll and h 2 is its width.

Perhaps not only the most traditional way but also the most versatile. Given the wide selection of wallpapers in hardware stores, each person will be able to choose wallpaper for their home or office, which is best suited to them both in terms of cost and quality.

Often, when coming to a wallpaper store, customers are already quite savvy about the quality of wallpaper and the price per roll. They know what wallpaper and which manufacturers are better to buy and glue on the walls.

But the question arises about the number of rolls that are needed to wallpaper the walls. In this article, we will try to give an example of how to visually calculate how many rolls of wallpaper you need to glue a room.

If you prefer simple wallpapers that do not have a pattern at all, or have a small pattern that does not require selection when pasting walls, then counting the number of rolls for a particular room is quite simple.

It is necessary to make measurements of the room, determine the length and width of the room. After that, it remains only to multiply the length by the width.

Below is the calculation scheme S area of the room.

Calculation example:

Room length= 3.9 meters (or 3 meters 9 centimeters)

Room width\u003d 3.45 meters (or 3 meters 45 centimeters)

S room area\u003d 3.9x3.45 \u003d 13.45 meters, round up to a whole number.

We get as a result S=14 sq.m(or 14 square meters)

After that, we determine the number of rolls required for the wallpapering room in the tables below.

Calculation example according to the table:

In the example above, we got 14 sq.m, if we chose wallpaper width 53 centimeters, then we look further into table number 1 in the left column room area with number 14 . Depending on the height of the room, select a column in the table in the name ceiling height(if we have a room height of 2.65 meters, then look in the column for the ceiling height Ceiling height 2.6 - 3 meters).

As a result, when the area of the room (floor) is equal to 14 sq.m., for roll width 53 centimeters, Ceiling height 2.6 - 3 meters, in table number 1 we get - we need 10 rolls.

Accordingly, with the area of \u200b\u200bthe room (floor) equal to 14 sq.m., for roll width 70 centimeters, Ceiling height 2.6 - 3 meters, in table number 2 we get - 7 rolls of wallpaper

And with the area of \u200b\u200bthe room (floor) equal to 14 sq.m., for meter wallpaper wallpaper width 106 centimeters, Ceiling height 2.6 - 3 meters, in table number 3 we get - 5 rolls of wallpaper.

That's all the arithmetic.

Below are 3 tables depending on the width of the wallpaper (for 53, 70 and 106 centimeters):

Table #1 53 .

Ceiling height up to 2.5 meters		Ceiling height 2.6 - 3 meters
Room area	Number of rolls	Room area	Number of rolls

For wallpaper width 53 centimeters and 10 meters long

Table number 2 designed for wallpaper equal to the width 70

Ceiling height up to 2.5 meters		Ceiling height 2.6 - 3 meters
Room area	Number of rolls	Room area	Number of rolls

For wallpaper width 70 centimeters and 10 meters long

Table #3 designed for wallpaper equal to the width 106 centimeters and 10 meters long.

Ceiling height up to 2.5 meters		Ceiling height 2.6 - 3 meters
Room area	Number of rolls	Room area	Number of rolls

For wallpaper width 106 centimeters and 10 meters long

Note: In tables The areas of the premises are indicated by floor(and not the area of the walls), the calculations are made on the average standard room, which usually has one door and one window.

It should also be taken into account that when calculating the number of wallpaper rolls according to the tables, sometimes it is necessary to use and take into account the selection of the pattern that exists on the wallpaper itself. If the wallpaper needs to be adjusted, then for every 6 rolls of wallpaper you need to add one more roll.

If you don’t want to manually calculate how much wallpaper you need per room, if you didn’t understand something when describing the calculations, or you can’t for some reason calculate how much wallpaper you need, then you will be helped online calculator.

Calculator for calculating the number of wallpapers per room - calculate online

We will not load you with tedious mathematical calculations. You only need to measure the basic parameters, and the wallpaper calculator will approximately calculate the required number of wallpapers for your room.

Fractional numbers must be entered with a dot, not with a comma! Those. 5.2 - wrong, 5.2 - correct ! The calculation is approximate. The result values may differ slightly from the true value, as all rooms are different and have various characteristics: square, rectangular, with ledges. Plus, windows and doors in the room, as well as their location, will have some influence on the error. If you decide to glue the wallpaper with a pattern fit (rapport), then for every 6 rolls you need to add one more roll to the result.

An example of calculating wallpaper for a room on our calculator: room width - 3.21 meters, the length of the room - 3.75 meters and room height (ceiling height) 3 meters. We decided to buy wallpaper long 10 meters, width 1.06 meters.

Thus, we substitute our numbers into the value fields and get the result - 4 roll. If our wallpaper requires adjustment of the pattern, then you can safely add another roll, in total there will be 5 rolls of the meters we like.

Those who want more accurate calculations and measurements can read the above article " how to calculate how much wallpaper you need and calculate manually.