How to calculate how much wallpaper you need per room. How to calculate the right amount of wallpaper per room (video)

Wallpaper calculation an important preparatory stage at the stage of purchase, when it is necessary to know exactly how many rolls to buy. It is better to calculate the wallpaper in advance, having previously known the width and length of the desired wallpaper, as well as the presence of rapport and pattern shift. rapport- this is the distance between the individual elements of the picture, i.e. their repetition, parts of which are joined between the canvases.

Wallpaper Calculator

Below is handy wallpaper calculator, to calculate the required quantity. The result obtained takes into account the rapport of the wallpaper and the displacement of the pattern. Additionally, you can check the calculation of the number of wallpapers per room using the method described in this section.

Room options:

Room width meters

Room length meters

Room perimeter meters

Room height meters

Wallpaper options:

Wallpaper roll length meters

Wallpaper Roll Width centimeters!

pattern rapport centimeters

(repetition of the pattern in height: the larger the pattern, the greater the margin)

Shifted pattern

Leveling margin 10 cm 15 cm

Calculation result:

Necessary wallpaper rolls

Necessary running meters of wallpaper

You can get all the information you need to calculate wallpaper for a room on the wallpaper packaging, which will indicate the length and width of the roll, as well as the rapport and offset of the pattern. This wallpaper calculator will help you plan and calculate how many wallpapers to buy. You can double-check the wallpaper calculator yourself using the self-calculation of wallpaper for a room, which is offered on this page.

You can get all the necessary information for the calculation on the packaging of the wallpaper, which will indicate the length and width of the roll, as well as the rapport and offset of the pattern. This wallpaper calculator will help you plan and calculate how many wallpapers to buy. You can double-check the wallpaper calculator yourself using the self-calculation of wallpaper for a room, which is offered on this page.

Calculating the number of wallpapers will protect you from further purchase of rolls or vice versa the cost of extra wallpaper. Everyone can calculate the wallpaper, for this you can use our wallpaper calculator for calculation, or use the instructions below on how to independently calculate the number of rolls per room. Both options are reduced to a single principle. When measuring the parameters of a room, doors and windows should be taken into account only in cases where they occupy a significant amount of the total area. To do this, in the wallpaper calculator, set the perimeter yourself, after subtracting a few meters from it, which are compensated by the presence of windows and a door. But it is better to calculate the wallpaper with a margin.

Calculation of the number of wallpapers per room

Consider an example of calculating the number of wallpapers per room, which are sold by the meter with a certain width of the canvas, in other words, standard wallpaper rolls. Take for example the dimensions of the room 4 x 7 meters, the ceiling height is 3 meters. Wallpaper 70 cm wide (0.7 m), pattern repeat 45 cm (straight pattern).

First, we need to divide the perimeter of the room by the width of the wallpaper to find out the number of paintings: (4 + 7) x 2 / 0.7m = 31.43. We round and get 32 ​​canvases. Next, we calculate the height of the canvas, taking into account the pattern repeat. It is necessary to add 10 cm to the height of the room - a margin for leveling the edges, i.e. 3 + 0.1 = 3.1m. We divide the resulting height by the rapport value: 3.1 / 0.45 = 6.89. Rounding, we get 7 repetitions of the pattern on one canvas. We multiply this number by the rapport value 7 x 0.45 \u003d 3.15 - the new height, taking into account the rapport.

Having learned the new height, we multiply it by the number of canvases and get the required number of linear meters for this room: 3.15 x 32 = 101 running meters.

If the pattern is shifted, then add another 1/2 of the pattern alignment value to the resulting height (for example, if the rapport is 45 cm "shifted pattern", then the height of the canvas should be 315 cm + 22.5 cm = 337.5 cm).

Since our wallpapers are sold in rolls, we divide its length (for example, 10.5 m) by the new height and get the number of sheets from one roll: 10.5 / 3.375 = 3.11 Rounded down, we get 3 sheets from a roll. Then we divide the total number of canvases required by the number of strips from one roll, and we get the number of rolls we need: 32 canvases / 3 \u003d 10.67. Rounding up we get 11 rolls. Thus, any calculation of the wallpaper for the room is made.

After calculating the wallpaper and directly choosing, you will also need information on preparing the wall for gluing, as well as the instructions for gluing itself.

No online calculator will help you correctly calculate the consumption of wallpaper for an irregularly shaped room. How much to “throw” on niches, how much to “subtract” on windows and doors, whether to glue behind furniture? Do I need to add a headroom? We asked - we answer.

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Do I need an online calculator?

For guidance only. It is better to calculate how much wallpaper you need yourself, and then check yourself online. There are indeed many wallpaper calculators on the Internet. Some are quite primitive: they ask you to set only three parameters - the length, width and height of the room. Others are more complex: they take into account the rapport and dimensions of the roll. If you use calculators, then it is desirable just such, detailed ones. In any case, the calculator will not calculate niches, ledges and other non-standard areas in the room for you.

1. Determine the required number of paintings (divide the perimeter of the room by the width of the roll).

2. Determine how many sheets are in the roll (divide the length of the roll by the length of one sheet).

3. Determine how many rolls you need (divide indicator No. 1 by indicator No. 2).

Pictured: What A Hoot Little Letters wallpaper 70523 by Harlequin.

Where to start the calculation?

From the perimeter. The perimeter is calculated according to a simple scheme - add the length of one wall to the length of the adjacent wall and multiply by two.
Example: If one wall is 4 meters, the other 3, then the perimeter will be 14 meters.

What are the adjustments for niches and ledges?

They need to be taken into account. In this case, the perimeter is considered differently - since the length of the walls opposite each other will be different (due to niches or ledges). The length of each wall along the floor is measured separately (taking into account recesses and protruding parts). Then all the scores are added up. It turns out the perimeter.

"Subtract" whether windows and doors?

Better not. Of course, these elements are not included in the glued surface, and if you want to save money, you can calculate the width of the door and window openings from the perimeter of the room, but experts do not recommend doing this - traditionally, the area of ​​\u200b\u200bthe window and doorway is left in reserve.

Should you wallpaper behind furniture?

Not if you don't change. Before you calculate the number of wallpapers, think about how the furniture will stand. If one of the walls is completely covered with shelving or a wardrobe, do not bring it into the perimeter of the room, and do not glue the wallpaper behind the furniture.

Behind a lonely closet or chest of drawers wallpaper can also not be glued. But it is not worth subtracting the area of ​​\u200b\u200ba not glued area from the total footage. This area will go to reserve. It is desirable that the wallpaper still go behind the cabinet by 10-15 centimeters.

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If the room niche is occupied by a closet, you can not glue the wallpaper behind it, but it is still better to measure the niche, taking into account all the protrusions, and the results obtained should not be excluded from the calculations.

Why consider rapport?

Important for wallpaper with a pattern. Rapport is the step with which the pattern is repeated on the wallpaper. Its size is indicated on the package. This value must be added to the height of each canvas. Otherwise, it will not be possible to cut the wallpaper so as to combine the pattern between the two canvases.

How to count wallpaper with offset?

In the photo: an icon symbolizing displacement during gluing.

See labeling. It happens that in order to match the pattern, each next canvas must be glued, shifting it up a certain number of centimeters (usually half a rapport). In this case, the offset value is also necessarily added to the total height of each web.

How to determine the height of the canvas?

You need to know the height of the room. Rapport is added to the height of the room, as well as, if required, an offset step. Plus, the margin for the upper and lower cutting of the canvas is usually 8-10 cm.

Example: room height - 2 m 75 cm, rapport - 60 cm, no offset is required. Let's take a margin for cutting wallpaper 10 cm. When adding these indicators, we get the estimated height of the canvas: 3 m 45 cm.

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In rooms with a complex volume, for example, in the attic, the number of paintings for each wall is counted separately. If the wall is sloping, the maximum height is taken as the basis. Get ready for a lot of cuts.

How to determine the right number of canvases?

You need to know the width of the roll. It is always indicated on the packaging. The standard width is 53 cm. But in the case of wallpaper for painting, it happens even more. We divide the perimeter of the room by the width of the roll, round the result up, and so we find out the number of canvases needed to paste over the room.

Example: Our perimeter turned out to be 14 m. We divide it by 53 cm. We round the result to the nearest integer and get 27 canvases.

When calculating the height of the wallpaper, you need to know the height of the ceiling in the room. To this figure, do not forget to add rapport and 8-10 cm for cutting.

Pictured: Magnolia 72/3009 wallpaper from Cole & Son.

How many sheets are in a roll?

You need to know the length of the roll. It is also always indicated on the packaging. The standard length is 10 m 05 cm, although there are other options. Divide the length of the roll by the height of the canvas. The figure is rounded down.

Example: The length of the roll is 10 m. The height of the canvas is 3 m 45 cm. This means that only two canvases fit into one roll. The rest, alas, are scraps.

How many rolls do you need per room?

Final count. The number of sheets you need per room is divided by the number of sheets in the roll. We round the result up and add one more roll to the reserve.

Example: We need 27 canvases per room. We have 2 sheets per roll. After rounding, we get 14 rolls and add one more. Result: 15 rolls.

Why leave a roll in reserve?

In case of marriage. When gluing, there is always a risk of spoiling one or two canvases. Therefore, you cannot do without a spare roll - even if you did not save in the calculation and did not subtract the area of ​​\u200b\u200bwindows, doors and chests of drawers.

For repair. A spare roll will come in handy to seal the soiled or worn area on the wallpaper in the future. If the room is running and there are animals or children in the house, the appearance of such areas will not take long.

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Do not throw away leftover wallpaper and unused rolls: they will almost certainly come in handy for the maintenance of worn or stained areas on the walls.

In order to paste new wallpaper, it is not necessary to invite builders. Such cosmetic repairs can be done on their own. The main thing is to buy the right amount of material and carefully study the instructions for gluing on the package. But how to correctly calculate how much wallpaper you need per room? Calculation rules for home repairs.

Measurement matters

The basis of construction calculations is accurate measurements, for which you will need a construction tape measure. First you need to measure the perimeter of the room being repaired (the length of all walls) without taking into account the width of windows and doors and the level of the walls. And then the length and height of the sections above and below the window sills, as well as above the doors. Now let's move on to the calculations.

We derive the calculation formula

• The resulting perimeter of the room is divided by the width of the selected wallpaper (it can be from 50 centimeters to a meter) and we get the number of solid strips.
• And we divide the length of the roll by the height of the room and get the number of pieces that can be cut from one package (when placed at 2.5 m, these are four strips).
• After that, we divide the total number of solid strips by their same number obtained from one roll. The result of the arithmetic will be the number of rolls that are needed to cut only whole strips.
• Now it's the turn to count the number of incomplete segments. We calculate according to the same principle, and add the result to the already existing figure.

In order not to torment the calculator and not to fill your head with extra numbers, you can use a ready-made table (but it is worth considering that, like any online service, it carries some error):

Adjustment for products with a pattern

Of course, when wallpaper is chosen for repairs that do not require adjustment, everything is more or less simple. But what if the choice fell on a wall covering with a large pattern? In this case, you will get 1 whole strip less from the pack (due to the need to adjust the pattern). Therefore, the calculation needs to be corrected.

Calculation example for persistent

There is a room 3 x 4 meters, height 2.50 m; with a doorway, the width of which is 0.8 m, and the height is 2.1 m; and a window, the horizontal of which is 1.2 m, and the vertical is 1.5 m. Wallpaper is selected, 60 cm wide, the roll length of which is 10.5 meters.

Perimeter without taking into account the width of windows and openings: 3+3+4+4-0.8-1.2 = 12 m

Number of solid cuts: 12:0.6 = 20 pieces

With a standard room ceiling level (2.5 m), 4 whole strips will come out of the package (by the way, you need to cut it with a margin, that is, the length of the piece should not be 2.5 meters, but ten centimeters more).

Number of packages for cutting out solid strips: 20:4 = 5 pieces

With a window size of 0.8x1.5 and doors 2.1 m high, scraps from 5 rolls are enough to paste over the space above the functional openings, but for the space under the window sill you will have to buy another one (although you can glue the wall under it with a composite piece). This means that in total you will need 6 plain rolls or 7 packages with a large pattern.

(2 ratings, average: 2,00 out of 5)

Discussion:

Faith said:

I think it's still better to pre-calculate the wallpaper. And then, if the wallpaper is with a pattern, figure out how many rolls you need to purchase additionally. I change wallpaper every 5 years. As a rule, I take 1 roll in reserve. Change the wallpaper, and the mood changes for the better.

Marina N. said:

Personally, I always calculate the number of rolls myself. And I don't trust tables. In the case of plain wallpaper, they are suitable. But if you need to select a drawing, then making a mistake is as easy as shelling pears.
And you should always play it safe and take more on a roll. Finding the wallpaper you want is easy. But the necessary party - no. That is, the wallpaper is the same, but the shade is slightly different. And on the wall, this difference is very noticeable.

Iva said:

Let the wallpaper remain superfluous, than there are situations (vacation canceled, a job appeared) when you buy wallpaper and glue it after six months. Then you discover that literally one roll was not enough, but the assortment in stores has already changed. So you find yourself in a situation from which it is very difficult to find a way out.

Wallpapering - requires care and competent preparation. It is about determining the number of wallpapers that will be required for work. This is where the difficulty arises, since not everyone is able to carry out the calculations on their own.

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

Calculation of wallpaper for a room - correctly and effortlessly

The variant with carrying out calculations seems expedient. There are many online calculators on the Internet, through which you can perform all the required operations. But you should not trust them too much - it is impossible to take into account all the nuances there. Manual calculations are more accurate and are preferred.

Calculation of rolls by room area:

Perform them in this order:

1. Measurements of the parameters of the required premises. To do this, determine the length of the room, its width and height. If there is a false ceiling or skirting boards, their dimensions are not taken into account. You should be extremely careful with measurements of gaps above window and door openings, niches and ledges. Subject to the combination of wallpaper or inserts in them, you should initially consider the scheme of work and then proceed to measurements;
2. If you carry out calculations along the perimeter, then 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 ​​\u200b\u200band multiply them by 2, we end up with 20 m. Take for 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 with the length by the height of the room, followed by multiplying the total 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 main measurements have been taken, the need for the total amount of material has been determined, it is necessary to calculate the wallpaper for one wall. The algorithm of actions is no different from the one that was 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 along the area and along the perimeter. There is no special significance - the main thing is to correctly carry out all the measurements.

How to calculate the required footage

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

The calculation table includes little - the height of the room, and, accordingly, the length of the strip, as well as the total number of stripes 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. It remains only to divide the footage of the required wallpaper by the number of paintings that can accommodate one roll. So we find out how many rolls will be required.

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 5 rolls will be required for all the gluing work.

When answering the question of how many rolls you need, you need to remember to buy an additional one, 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 wallpapers even from the same series can have differences in shades.

It must be remembered that over time, abrasion of the canvas, its contamination or mechanical damage is possible. Here it is simply impossible to do without gluing a new canvas.

How to calculate liquid wallpaper

We will 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 finish with virtually no restrictions. It is only necessary to correctly determine the number of packages that will be required to cover the planned area of ​​\u200b\u200bthe room.

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

As you can see, nothing super complicated. You just need to be careful and careful, remembering that even a minor mistake can have serious consequences. Do not rush if you are doing this procedure for the first time. It is much easier to double-check once again than to subsequently “puzzle” your head about where to find the missing couple of meters of wallpaper. Remember - even seemingly insignificant details should be taken into account. Successful calculations and apartment renovation.

Have you finally decided to re-paste the wallpaper in your room? It's time for old wallpaper to retire and you are wondering how to calculate the number, how many rolls do you need? Answer next...
The most common wallpaper size 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 wallpaper rolls with a length of 15*0.53 m, 10*1.06 and 25*1.06 m.

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 \u003d 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 (don't forget to add a little margin for later trimming, say 5 cm) 2.50 + 0.05 = 2.55 m

1. Then count the number of strips per 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 niches of the doors, then add 1-2 additional rolls of wallpaper.

If you are using wallpaper with patterns, you need to add a margin to the height calculation to fit the pattern: 2.50 + 0.05 (cut off excess) + 0.30 (fit the pattern) \u003d 2.95 m.

Ceiling calculation

The ceiling is the same. Recently, however, pasting the ceiling with wallpaper does not look elegant. Today, a lot of embossed ceiling tiles have appeared that look more organic and aesthetically pleasing.

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

How to save?

If you made a mistake in the calculation, and it is no longer possible to purchase such wallpapers, then you can purchase similar ones. And decorate some of the walls with other wallpaper. In fact, this option looks very modern and non-standard. At the same time, the view zones will change, that is, from different parts of the room, its appearance will be different, which will also have a pleasant effect on its perception.
Option with no pasting behind the sofa and wardrobe for an amateur.

calculator to help you

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

Use the following table to calculate the 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