Choose a tape measure or measuring tape. Choose a tape measure or measuring tape that has markings in centimeters (cm) or meters (m). This fixture will make it easier to calculate the area in square meters, since they were designed in the same measurement system.

• If you can find a tape measure in feet or inches, measure the area using the available units of measure, and then proceed to the step that describes how to convert other units of measure to square meters.

Measure the length of the area you have chosen. A square meter is a unit of measurement for the area or size of a two-dimensional object such as a floor or field. Measure the length of one side from one corner to the other and record the result.

• If the length is more than one meter, then count both meters and centimeters. For example, 2 meters 35 centimeters.
• If the object you are measuring is not a rectangle or square, then read the third section of this article - "Measuring the area of ​​​​complex shapes."

If you cannot measure the length at a time, do it in stages. Unfold the tape measure and make a mark where it ended (for example, 1 meter or 25 centimeters), then unfold it again and start from the marked area. Repeat until you have measured the entire length. Then add all the measurements together.

Measure the width. Use the same tape measure to measure the width of an object. The measurement must be started by placing the tape measure at an angle of 90º with respect to the length of the object that you have already measured. That is, two lines of a square adjacent to each other. The resulting numbers also write down on paper.

• If the measured length is slightly less than one meter, then round to the nearest centimeter when you take measurements. For example, if the width is slightly larger than 1 meter 8 centimeters, then simply write "1 m. 8 cm." don't count millimeters.

Convert centimeters to meters. Usually, measurements cannot be made exactly in meters. You will get indicators in both meters and centimeters, for example, "2 meters 35 centimeters." 1 centimeter = 0.01 meters, so you can convert centimeters to meters by moving the decimal point 2 digits to the left. Here are some examples.

• 35cm=0.35m so 2m 35cm=2m+0.35m= 2.35m
• 8cm = 0.08m, so 1m 8cm = 1.08m

Multiply the length by the width. Once you convert all measurements to meters, multiply the length by the width and get the area of ​​\u200b\u200bthe object being measured. Use a calculator if necessary. For example:

• 2.35m x 1.08m = 2.538 square meters (m2).

Round up. If you get a lot of decimal places, for example, 2.538 square meters, then round up, for example, to 2.54 square meters . It is likely that you did not take measurements to the nearest millimeter, so the last figures will still not be accurate. In most cases, we round to the nearest centimeter (0.01m). If you need more accurate measurements, read this material.

• Every time you multiply two numbers with the same unit of measure (eg meters), the answer must be written in the same unit of measure (m 2 , or square meters).

How to calculate the area of ​​​​a room in square meters: instructions for measuring a living room, bathroom, kitchen, balcony and garage

How to calculate the area of ​​​​a room in square meters: instructions for measuring a living room, bathroom, kitchen, balcony and garage

In order to save on building materials, you need to know the exact footage of the dwelling.

To do this, you need to be able to correctly measure the room.

This article details how to do this.

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Classmates

Where to start measuring

Each room has 3 indicators to measure:

1. Length. Most often there are values ​​\u200b\u200bof 4 or 4.5 meters.
2. Width. In standard apartment building the width of the rooms is 3 or 3.5 meters.
3. Height. In new buildings, the height of the walls is 2.5 meters, and for example, in buildings of the Stalin era, it can reach three meters.

To measure square meters, you will need the following tools:

• roulette;
• pencil;
• paper;
• calculator.

Algorithm for calculating the quadrature of the room

For the calculation, it is necessary to apply the area formula: S \u003d a * b, where S is the area, a is the length, b is the width.

So, let's calculate the footage using the example of a living room with the following indicators:

Height (h) = 2.5 m;

Width = 3 m;

Length =5 m.

Let's calculate the floor area of ​​the room: S= 5 m*3 m = 15 m2. You will need this information when purchasing. floor covering or installation of a stretch ceiling.

We calculate the area of ​​\u200b\u200bthe room along the walls using the following formula:h *(a*2+ b*2).

We calculate as follows: 2.5 m * (5 m * 2 + 3 m * 2) \u003d 40 m2.

In order to obtain net area values, it is necessary to subtract the area of ​​doors and windows from 40m2.

Doors and window openings

Standard doors have the following dimensions:

Width = 0.8 m, height = 2.0 m.

We multiply the indicators on each other: S \u003d 0.8 m * 2.0 m \u003d 1.6 m2.

A standard window in a multi-storey building has the following dimensions:

Width \u003d 1.6 m, height \u003d 1.5 m. In the course of the product of two numbers, we get the area: S \u003d 1.6 m * 1.5 m \u003d 2.4 m2.

Snet \u003d 40 m-2.4 m-1.6 m \u003d 36 m2.

Master's note: determining the net area will help you choose the right amount of wallpaper tubes, drywall sheets and other finishing materials.

Irregular room

It is necessary to measure the quadrature of the room in stages, dividing it into several sections of the correct shape.

So let's look at concrete examples ways to calculate the footage:

1. Kitchen. Each kitchen has a ventilation shaft, a radiator along the window, a door, a window and a built-in storage shelf. Let's calculate the net area of ​​\u200b\u200bthe walls of the kitchen for.

Kitchen details:

Height =2.5 m;

Width=3m;

Length =3.5m.

Door size: width=0.8m, height=2.0m;

Window size: width 1.2 m, height = 1.5 m;

The ventilation shaft has the following dimensions: width =50 cm, length =30 cm; height = 2.5 m;

Built-in shelf: width = 20 cm, length = 50 cm, height = 2.5 m;

Radiator dimensions: width = 10 cm, length = 100 cm, height = 50 cm.

Let's calculate the net area:

First, we find the total area: (3.5 m * 2) + (3 m * 2) * 2.5 m = 32.5 m2;

Windows: S net = 1.2 m * 1.5 m = 1.8 m2;

Doors: S net = 0.8 m * 2.0 m = 1.6 m2;

Ventilation shaft: S net = (50 cm * 2) + (30 cm * 2) * 2.5 m = 400 cm2 or 0.40 m2;

Built-in shelf: S net = (20 cm * 2) + (50 cm * 2) * 2.5 m = 350 cm2 or 0.35 m2;

Radiator surface area: (10 cm *2) + (100 cm *2) * 0.5 m = 110 cm2 or 0.11 m2.

Now we determine the number of net square meters by subtracting their total area: S net kitchen walls \u003d 32.5 m2 - 1.8 m2 - 1.6 m2 - 0.40 m2 - 0.35 m2 - 0.11 m2 \u003d 28, 24 m2.

Helpful advice: to count the number of wallpaper tubes, you need to divide the net area by the number of sheets in the tube.

A standard tube has the following dimensions: width = 50 cm, web length = 10 m. The height of the walls of the apartment is 2.5 m, and it follows that 4 paper sheets are included in one tube: 10 m / 2.5 m = 4 sheets.

Let's calculate how many tubes are needed to:

28.24 m2 / 4 = 7.06 tubes. But since, paper web may contain a pattern in increments of 0.3 or 0.5, then the number of tubes should be rounded up to 8.

1. Bathroom. Calculate the number of boxes of tiles for a standard bath. In order to correctly calculate the quadrature of the room, it is necessary to take measurements taking into account the trimming of ceramic tiles.

We know standard size doors: width =0.8 m; height = 2.0 m.

The size of a typical bathroom is: width 2.3 m; length = 1.6 m, height = 2.5 m.

We calculate the net area of ​​the bath:

S baths \u003d (2.3 m * 2) + (1.6 m * 2) * 2.5 m \u003d 19.5 m2.

Then, subtract the following values:

S net = 19.5 m2 - 1.6 m2 = 17.9 m2.

In order to calculate how many boxes of tiles you need, you should decide on the size of the ceramic product. The tile comes in the following sizes: 10x10; 10x20; 20x30; 30x30. Let's take a more common option: 30x30.

There are 10 pieces in one package and, knowing the size of the tile, you can calculate the number of pieces per 1 m2:

1 m2 is 100 cm by 100 cm, it follows that 1 m2 includes 9 whole tiles 30x30 and 7 tiles, 10x10 cm in size.

Let's determine the number of whole tiles and the number of cuts:

17.9 m2 / 9 \u003d 1.9 - round up and get 20 boxes of whole tiles;

20 * 7 = 140 small tiles, 10x10 in size.

If you lay tiles on a plane without trimming, then you should take 20 boxes, and if with trimming, then 16.

1. Balcony. To get the net area of ​​the balcony, it is necessary to measure the frames with glazing. The perimeter of the balcony is measured excluding windows.
2. Garage. As a rule, the garage is a box with a small window. To calculate the net area, it is necessary to measure the dimensions of the gate.

try on area of ​​a round window, floors, building walls in the form irregular shape or an octahedron, you can use improvised means.

Take a tape measure and measure the maximum diameter of the circle, for example, it turned out to be 100 cm. We calculate the radius: 100 cm / 2 \u003d 50 cm - this is ¼ of a circle in the form of a triangle.

If the circle is visually divided into 4 parts, and the points are connected with straight lines, we get 2 isosceles triangles or 1 square. We know a part of an isosceles triangle, therefore, all sides will be 50 cm long. It remains to find the area of ​​a square where all sides are 50 cm long. You can calculate the total area of ​​\u200b\u200bany structure using an online program.

Watch the video in which the master explains in detail how to correctly calculate the area of ​​\u200b\u200bthe walls in the apartment:

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If you are going to make repairs, the first thing you need to do is plan the budget for repairs, and for this, in turn, you need to know how much building and finishing materials will be needed, provided, of course, that you have already decided on the design project and you know exactly where the tiles will be installed, which walls will be “painted” or textured plaster, and where the built-in wardrobe will be located.

Interested in the cost of services for repair work, you will pay attention to the fact that all prices are usually "tied" to square meters. Actually, the apartment renovation budget is directly related to the area of ​​\u200b\u200byour square meters. So we come to the main question of our article - how to calculate square meters?

Take a good look at your room. The room consists of walls, floor and ceiling, it also has windows and doors. So you need to calculate the area of ​​\u200b\u200ball surfaces that will be subject to repair work, taking into account all additional components, which are windows and doors.

Each of the walls, as well as the ceiling and floor, is either a square or a rectangle. Walls have width and height, floor and ceiling have length and width measured in meters. How to calculate square meter?

So, the area of ​​a rectangular or square surface is calculated by the formula:

S= a x b, where

a and b - sides of the rectangle (walls, ceiling, floor).

Suppose your room is 6 meters long and 4 meters wide, then:

• the floor area of ​​the room will be 24 square meters:

Now let's calculate the area of ​​the rooms along the walls. Suppose you have a ceiling height of 3 meters, then:

• the area of ​​​​the room along one wall will be equal to 18 square meters

• the area of ​​the room on the other wall will be equal to 12 square meters

• the area of ​​four walls is 60 square meters

S = (18+12) x 2

How to count square meters, you already know. But for repairs and accurate calculation of the area, for example plastering works, you need to calculate from the total area of ​​the walls the area that windows and doors occupy. After all, they do not need to be plastered or putty.

Similarly, you calculate the area of ​​the rectangle occupied by windows and doors. Suppose the door is 2 meters high and 0.90 meters wide, then:

• door leaf area is 1.8 square meters

We consider the area occupied by the window opening. If the height of the window is, say, 1.5 meters, and the width is 1.6 meters, then:

• the window area in our example is 2.4 square meters

If the room has one door and one window, then from the total area of ​​​​the walls it is necessary to subtract the area occupied by windows and doors:

S = 60 - 1.8 - 2.4

So, the total wall area is 55.8 square meters, the floor and ceiling area is 24 square meters each.

Igor Voropaev

Expert comment

Igor Voropaev - leading lawyer of "Prosper-Consulting"
PropertyExperts Portal Consultant

I have been working for a construction company for several years and go out to measure the dimensions of the premises almost daily. Before starting work, everyone who plans to use the services of our company must call a specialist and measure the geometric perimeter, determine the shape of the room (maybe even a triangle), the number of simple and complex shapes (ledges, niches), and also determine the values ​​​​of other quantities in cubic and running meters.

If this is an exterior finish, the roof and the entire structure are also measured. A student also arrives and performs the calculations (it may take several minutes, because it is necessary to multiply the measurements). After converting indicators and units, he will present a quick final result with the presence of the correct dimensions, according to which the cost of conducting various works(number of rolls of paper, lining, coatings in the bathroom, putty weight).

Based on these data, the total cost of the work will be set. We do not charge for these works if the repair is ordered from us. It is in this case that it is excluded that there will be problems with materials or the amount of work, which is convenient for everyone.

Any surface in the room is subject to repair, whether it be walls or floors, so it is very important to know how to calculate the area of ​​​​the room in whole or in parts.

But in regular room the floor always corresponds to the ceiling and is often calculated using the formula for the rectangle S = AB, where A And B If you are going to make repairs in a house that was not built by you or without your participation or control, make sure that the lengths of opposite walls in each room are the same. The room sometimes looks like a perfect rectangle, but in fact one wall can be several centimeters shorter than the other.

Using the above formula, you will get a fair amount of error. To avoid it, determine the correct rectangle with measurements, and for all deviations from it, count square meters separately. You will most likely be dealing with triangles where 2 sides meet at 90 degrees, so the formula would be S = AB/2 where A And B- the length of the legs.

The biggest difficulty faced by those who started repairs on their own is irregularly shaped rooms. For example, it is difficult to perform calculations if, for example, an arched partition separates the living room from the corridor. Therefore, in this case, before calculating the square meters on which the room will be repaired, it is necessary to clearly define the boundary, as well as the bending radius of the wall.

Further, in order not to mess with the sines and cosines of the angles, we take the arc and the two radii limiting it as a sector of the circle and consider its square meters: S = Lr / 2, where L is the length of the arc, and r- radius, the values ​​\u200b\u200bof which are not difficult to find out by measurements. Now you need to determine the distance between the ends of the arcuate bend of the room. This will give us the chord of the calculated sector, together with the radii it will form a triangle, the area of ​​\u200b\u200bwhich is found by the formula S \u003d b √ (4a 2 - b 2) / 4, where b- the base of the triangle (the chord of the sector), A– its side (sector radius).

We subtract the quadrature of the triangle from the previously determined area of ​​the sector and get the value for the complex section of the room, which has the shape of a segment. To make it easier to determine square meters for planning a complex configuration, it is enough to divide the room into simple figures and calculate the area for each separately, and then add the results.

Consider the option when you need to make repairs in a room with 5 walls. If this is just a standard room, one of the corners of which is cut off, then everything is quite simple. We first consider the area, as if it were an even rectangle, that is, along the two longest adjacent sides, the formula S \u003d AB. Then we draw from the ends of the fifth wall lines perpendicular to each other, converging at one point, and measure the resulting sides of a right-angled triangle. Next, we calculate according to the formula S = AB / 2 and subtract the resulting value from the result of the first formula.

But it happens that the room has a "sprout" going at an obtuse or acute angle to the main space. That is, the area includes not only 2 rectangles, but also a scalene triangle. Having determined its boundaries, we measure them, and then use the Heron formula S = √(p(p – a)(p – b)(p – c)), where p– semiperimeter, which is considered as follows p = (a + b + c)/2, here and earlier a, b And c- Sides of a triangle. The result obtained is summarized with the solutions for the two rectangles that make up the wrong layout of the room.

We calculate the area of ​​\u200b\u200bthe walls

Plasterboarding, plastering, painting, tiling - these and other types of work involve the repair of walls that are an integral part of the room. Accordingly, for them, too, you need to correctly calculate the area. All calculations are based on measurements of the perimeter of the room and its height. The results are substituted into the formula S = Ph, here h is the height, and P(perimeter) is calculated as follows: P = 2(A + B), where A And B- the lengths of adjacent walls having a common angle.

If you decide to make or at home, first of all you need to choose and understand how many of them you need. To do this, you need to correctly calculate the area of ​​​​all surfaces in the apartment. Of course, you can resort to the help of professionals, while spending extra money. And you can do it yourself. How to calculate the area of ​​a room different shapes, this article is devoted to.

Read in the article

Why is it necessary to know the area of ​​\u200b\u200bthe room and what is required for calculations?

In what cases is it necessary to calculate the area of ​​\u200b\u200bthe room?

• Of course, first of all to determine the quantity to repair. Many people buy them with a margin, and return the surplus to the store. However, in this case, a lot of time is lost, moreover, not all stores provide such a service. Therefore, it is more expedient to correctly calculate the area of ​​\u200b\u200ball surfaces before shopping.

• In addition, knowing the area is easier. After all, even the cost of the work of employees in most cases depends on how many square meters they have to process.
• The amount also depends on the area. However, in most cases, complex calculations are not resorted to when choosing fixtures; this issue is usually resolved empirically.

• And the last. One of the main quantities in the apartment is the volume of the premises (in this case, it is necessary to multiply the area by the height), because depending on it they select.

Important! Be sure to check the area when buying an apartment, especially if you bought it in a new building. After all, the size of utility bills and often the cost of the living space itself depend on it. For example, the developer (in the case of equity participation in construction) is obliged to reimburse the cost of the missing square meters.

Thus, there are a huge number of reasons why it is necessary to correctly calculate the area of ​​\u200b\u200bthe room. But where to start? First you need to prepare the measured room and tools.

It is desirable to carry out measurements in a completely vacant room. If this is not possible, clear at least the areas near the walls, because it is along them that measurements will be taken.

Important! If the room is rectangular, check the correctness of its shape before starting measurements. To do this, compare opposite diagonals. If they are equal, you have a regular equilateral rectangle.

So, to determine the area of ​​\u200b\u200bthe room, the following are needed:

1. Roulette. Of course, the electronic device is more convenient, but it has a large error. In addition, complex shapes cannot be measured with such a tape measure; problems can also arise when working with protruding elements. Therefore, the optimal set is a simple tape measure and a ruler. The main thing is to check their accuracy, since many old or children's devices have a decent error.
2. Pencil.
3. A sheet of paper for calculations and recording results.
4. Calculator.

In addition, you may need a long ruler to check the evenness of the walls.

How to calculate square meter?

In square meters, in most cases, the area of ​​\u200b\u200bany surface is calculated. So how to calculate square meter?

To begin with, if the room is rectangular, you need to measure its length and width. In this case, it is desirable to use a tape measure with applied divisions of centimeters and millimeters. If you can only find a ruler with feet, it doesn't matter, they can be easily converted to square meters.

Further, the two obtained values ​​\u200b\u200bin centimeters are converted into meters (it’s easier to do it right away) by dividing by 100. Then the two values ​​\u200b\u200bare multiplied, the resulting value is the area of ​​\u200b\u200bthe room in square meters. If you have feet, first multiply the resulting values, so you get square feet. Then, to convert to m 2, multiply the resulting value by 0.093 (if the measurements were made in yards, multiply the result by 0.84). In this case, to calculate square meters, a calculator - perfect solution.

Interesting! On the Internet, there are many online square meters calculators for calculating the area of ​​\u200b\u200bthe room. If a computer is at hand, this method will be the fastest.

When the figure is received, round it up to 2 decimal places, a more accurate value will be redundant.

How to calculate the area of ​​​​a room yourself?

The perfect room is a rarity. How to find out the area of ​​​​a room with ledges, niches or curved bevels? The simplest thing is to measure the lengths of all the walls, as well as the angles between them, and then draw a plan of your room on a piece of paper (the scale will most likely fit 1:100, that is, one meter in the room will correspond to one centimeter on paper) . Then it is necessary to divide the room into regular shapes (rectangles, triangles, circles, and so on), if possible, and using the formulas for calculating the area, determine the quadrature of each section.

Below are the most popular figures, descriptions of the calculation methods of which will help answer the question: "How to calculate the area of ​​\u200b\u200bthe room yourself?".

How to find the area of ​​a rectangle?

How to calculate the area of ​​a rectangle yourself? room right rectangular shape is the simplest case. To calculate the area of ​​a rectangle, simply multiply its length and width. However, there are also some nuances in this situation:

1. After measuring one of the sides, the second must be measured strictly perpendicular. Otherwise, measurements can be obtained with a significant error.
2. To avoid inaccuracies, measure both parallel walls, as often their lengths are somewhat different, and for accuracy it is desirable to take their arithmetic mean. That is, add their values ​​​​and divide by 2.
3. Do not forget to subtract all kinds of protrusions from the resulting area (or add niches).

Interesting! There are many programs on the Internet for calculating the area of ​​a rectangle, the online calculator is the simplest and most convenient of them.