Purchasing the necessary materials for repairing a room is a responsible matter. And sometimes the main thing is to decide on their quantity, and not just on quality and appearance. To purchase materials in exactly the amount you need, you will have to carefully measure the room. How to calculate square meters of the floor? Everything is quite simple, it is enough to understand the principle and remember school mathematics lessons.

Any repair cannot begin without accurate knowledge of the size of the room. To calculate the number of wallpapers or panels, you need to find out the dimensions and area of ​​\u200b\u200bthe walls, to purchase a sufficient number of ceiling tiles, measurements are taken from the ceiling. Of course, for the purchase of flooring in the required volumes, you will also have to try and find out the value of the area of ​​\u200b\u200bthe entire floor space.

With the removal of measurements from the premises and the determination of the area of ​​\u200b\u200bthe base, every person who decides to start repairs on their own faces. If the owner of the premises turned to specialists for help, then he will not have to delve into anything - the masters will do everything themselves. However, many still decide to carry out repair work with their own hands. This allows you to significantly save money spent on repairs.

The main reasons for the need to determine the floor area are as follows:

• repair or primary laying of flooring;
• pouring fresh screed;
• arrangement of the lag system;
• floor painting;
• applying other building materials to the floor;
• determination of the size of living space when drawing up documents or buying / selling an apartment or house;
• determining the compliance of the premises with the room plan;
• selection of furniture according to dimensions;
• drawing up a room plan for further work;
• assessment of the cost of the work of specialists and other costs.

Basically, knowledge of the floor area is required in order to calculate the amount of building materials needed for finishing that will be used during work. For example, the volume of cement mixture for pouring the screed, the number of self-leveling floors or packs of laminate, etc.

On a note! In order to calculate the required amount of materials, you need to know not only the area of ​​\u200b\u200bthe room by the floor, but also the area of ​​​​one part of the material you have chosen. For example, lamellas or tiles.

Room area in square meters

Do not confuse area with perimeter. The area is the dimensions of the entire floor space, limited by a certain perimeter of the walls. And the perimeter is the sum of the lengths of all sides of the room. Knowing the perimeter is also necessary, but this value is calculated in order to calculate how much plinth will have to be purchased to finish the room.

What dimensions are needed for calculations?

So, what measurements will you have to take to determine the area of ​​\u200b\u200bthe room? The answer is simple - everything that touches the perimeter of the room, and it does not matter whether the room is geometrically even or has a lot of niches and corners. Generally speaking, to calculate the area of ​​any room, you will need its length and width.

What tools are used to calculate areas?

Various computer programs can be used to calculate the area of ​​\u200b\u200bthe room, and various mathematical formulas for calculations are also used. But the dimensions of the sides of the geometric figure, which corresponds to the room, will have to be removed in any case.

Table. Tools for taking measurements of the room.

Name	Recommendations
	Necessary for recording received readings. If the readings are not recorded, then you can quickly get confused. Also, paper and writing utensils will be useful for drawing up a floor plan.
	With its help, all dimensions are determined directly. The larger the room, the longer the tape measure will have to be purchased. You should not use a soft fabric centimeter tape, which cutters use - it is quite short and soft, so it will be inconvenient to take measurements and errors can be made.
	Required for all mathematical operations. It is convenient in that it will reduce the risk of errors.
	A handy device that allows you to quickly and accurately take measurements of any room.
	May be needed to measure angles in a room. It is worth remembering that even seemingly right angles are not always so. And sometimes you need to know the exact size of the angle.

Manual calculation on a piece of paper is convenient in that all parameters can be immediately measured on the spot and make the necessary adjustments. But it’s quite easy to make a mistake with the manual method of calculations, so it’s better to recalculate all the indicators once again.

On a note! It is better to measure the room once again if you are unsure of the readings than to end up buying an insufficient amount of material or purchasing it in excess.

To automatically calculate the area of ​​​​the room, it is convenient to use various graphic editors. It can be AutoCAD, ArchiCAD or SketchUP. They create a figure according to the shape of the room, the dimensions of all its sides are indicated when creating the layout. The area of ​​the room will be given by the program automatically and with high accuracy (up to centimeters and millimeters). Everything will depend on the accuracy of the measurements taken. The use of these programs is especially recommended if it is necessary to calculate the area of ​​​​a room that is complex in its geometry. The disadvantage of this method is the need for at least a superficial study of programs, as well as the use of computer technology.

How to calculate floor area?

The main rule when measuring the parameters of the premises is to take measurements along one line. For example, along the wall. However, the tape measure should be placed on the floor, as the walls may have some curvature. If the room is filled with bulky things, then measurements can be taken not along the wall, but slightly away from it. The main thing is to make sure that the roulette tape lies flat, does not bend, otherwise there may be a large error.

Calculating the area of ​​a rectangular room

A room that does not have any, even small, ledges and niches, or, simply put, is rectangular - the easiest option for taking measurements and calculating area values. Here it is enough to recall the simplest formula from a mathematics course - how the area of ​​\u200b\u200bsuch a figure as a rectangle is calculated. To do this, you need to measure only the width (A) and the length of the room (B). Thus, we get that S (area) will be equal to the value that will be obtained by multiplying the two indicators A and B.

On a note! If the figure is not a whole number, then it must be rounded up. For example, 4.357 is rounded up to 4.5 m2.

All measurements are given in meters. Centimeters are indicated after the decimal point. For example, the length of the wall turned out to be 376 cm, then it turns out (in 1 m - 100 cm) that the length of this wall will be 3 m 76 cm.

Square Room Area Calculator

Sequentially fill in the requested values ​​(in centimeters) and press the button "Calculate room area"

Side length "A 1" (in centimeters)

Side length "A 2" (in centimeters)

Half

Side length "B (h)" (in centimeters)

niches or passages, increasing room area

Number of niches or passages

Niche length "a" (in centimeters)

Niche width "b" (in centimeters)

Availability, quantity and size ledges or columns, reducing room area

Number of ledges or columns

Protrusion length "a" (in centimeters)

Protrusion width "b" (in centimeters)

How to calculate the area of ​​​​a room in which niches and ledges are available?

What to do if there are various niches or columns in the room that cannot be hidden or dismantled? In this case, you will have to tinker a little with the calculations, since from the values ​​​​of the total area you will have to calculate those indicators of the areas that these same columns occupy, and add the area of ​​\u200b\u200beach niche to the result.

In this case, it is most convenient to draw on paper the exact shape of the room, indicating all the ledges, niches and columns. Next, measurements are taken of the long and even sides of the room and recorded in the appropriate place on a piece of paper. After that, the perimeter of each column is measured and, according to the above formula (S \u003d A x B), the area of ​​\u200b\u200beach column is calculated. Further, in separate blocks, according to the same principle, the parameters of the area of ​​\u200b\u200beach niche are calculated.

Further, everything is simple - the main area is considered, that is, the length and width of the longest walls are multiplied. From the obtained value, the areas of the columns are subtracted, and then the niche areas are added to the result. We get the exact area of ​​\u200b\u200bthe entire room.

In some cases (for example, the room is made in the shape of the letter "L"), you can visually divide the room into several even figures (for example, rectangles), take measurements of each figure separately, then calculate the area of ​​\u200b\u200beach element and summarize all the obtained values.

Calculation of floor area in an irregularly shaped room

For rooms that have an irregular shape, it is much more difficult to calculate the area. Difficulties are added by elements such as arches, niches in the shape of a semicircle, sloping walls, etc. In fact, the principle of calculation is the same - you need to divide the room into several even figures and calculate the area of ​​\u200b\u200beach separately, and then summarize. But the area of ​​a circle or triangle is calculated using other formulas.

For example, the area of ​​a triangle is calculated as follows: the length of the base is multiplied by the height of the triangle and divided by 2.

On a note! The easiest way, if possible, is to divide the entire room into even figures such as squares and triangles and count their areas separately, and then sum them up.

The area of ​​multi-level stripes is not as difficult to calculate as it seems. The areas of individual segments are simply considered and summed up. If the steps need to be finished with the same floor material as the rest of the floor, then it is enough to measure the area of ​​\u200b\u200bthe side of each step and add to the total figure.

If the room has a trapezoid formula, then you can calculate its area without dividing the room into simple figures. The trapezoid formula is calculated as follows: the length of the upper border (the shorter side - a) is added to the length of the lower border (b), then multiplied by the height of the trapezoid (h) and the result is divided by two. The area of ​​a quadrangle with equal sides can be calculated using the formula: S = a (length of the long side) x h (height of the quadrangle).

floor area calculator

In order not to suffer with manual calculations on paper and not to master computer programs, you can use the help of online calculators. This opportunity is provided by a lot of Internet resources. In a special window, it is enough to enter all the data, and after clicking the "calculate" button in a new field or on a new page, the final calculated data will open. Usually, all indicators are entered in meters, but other units of measurement can be specified if desired.

Advantages of online calculators:

• no need to count manually;
• you can easily get the area of ​​\u200b\u200bany figure;
• the speed of calculations and their accuracy are high.

Triangular Room Area Calculator

Enter the measured lengths of all three sides of the triangle (in centimeters) and press "Calculate the area of ​​a triangle"

Side length "a", (in centimeters)

Side length "b", (in centimeters)

Side length "c", (in centimeters)

half

Step by step calculation of the area of ​​the room

Step 1. The first step is to prepare all the measuring tools, as well as a piece of paper and a pen. On paper, you can pre-draw a diagram of the room, trying to preserve the geometry as much as possible and display all the niches and details of the room. Roulette is used as long as possible.

Step 2 The length of the room is measured. If it is so large that there is not enough tape measure, then measurements are taken in stages. To begin with, a measurement is made for the maximum length of the tape measure, a mark is made at the place of its end, from which it is then again measured to the end of the room.

Step 3 The width of the room is measured (along the wall with a shorter length). The tape measure is located at right angles to the previously measured wall of the room (length). The received data is recorded.

Step 4 The results obtained are multiplied with each other. For these purposes, it is recommended to use a calculator. If necessary, the area value is rounded up.

Step 5 If it is necessary to measure the area of ​​​​a complex geometric room, then first the complex figure is divided into several simple ones - squares, triangles, rectangles. The object is depicted on a piece of paper schematically, schematically divided.

Step 6 Each figure is measured separately. For example, rectangles, triangles.

Step 7 The area of ​​each figure is calculated. Further, all the obtained values ​​\u200b\u200bare summed up and the total exact floor area of ​​\u200b\u200bthe room is obtained.

Video - We consider the floor area of ​​​​the room

Video - Area Calculation in SketchUP

We count the number of tiles

Knowing the area of ​​​​the room, it will not be difficult to calculate the amount of flooring. Let's figure out how to figure out how many tiles you need for a particular room. To do this, you need to find out what is the area of ​​\u200b\u200bone element of the tiled coating. Knowing these data, it is easy to make the necessary calculations. For example:

• room area - 15 m 2;
• the size of one tile unit is 0.20x0.30 m.

Thus, the area of ​​​​one tile will be 0.2x0.3 \u003d 0.06 m 2. Further, the total area of ​​the room is divided by the area of ​​​​one tile and we get: 15 / 0.06 \u003d 250 units. That is how many tiles it will take to close the entire subfloor in this room. In exactly the same way, the amount of laminate or parquet board, as well as other materials, is calculated.

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 a 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 these data when buying a floor covering or installing 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 of how 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 a paper canvas can contain a pattern in increments of 0.3 or 0.5, 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 the standard size of the door: 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 the area of ​​​​a round window, ceiling, building wall in the form of an irregular shape or an octahedron, can be done using 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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When repairing, buying materials, you need to know the area of ​​\u200b\u200bthe premises. They also say "squaring". How to calculate the area of ​​​​a room in square meters, what is needed for this - we will consider in the article.

How to find the area of ​​various figures, took place in elementary school. It was a long time ago, so "updating" the information may be useful. We will consider only what can be related to gender. So, let's start with the simplest - units of measurement.

What is 1 cm² and 1 m²

The area of ​​any figure is measured in square meters or square centimeters. Designation cm² or m², spelling sq.m, sq.m. see, sq. meters, sq. centimeters and other variations.

One square centimeter is the area of ​​a square with a side of 1 cm. If you draw such a square, the sides of which are 1 cm, then the shaded part (red or blue in the figure) will be one square centimeter. Accordingly, a square with a side of one meter - 1 m - has an area of ​​\u200b\u200bone square meter. The same "square area". That is, it is a square section of the floor (or wall) with a side of one meter - 1 m². There are ten thousand square centimeters in one square meter: 1 m² = 10,000 cm².

Formulas

This is what concerned the units of measurement and their correspondence. But our premises, thank God, are more than one square meter. How to calculate the area of ​​a room? How many square meters does it have? Usually the room has the shape of a rectangle, less often a square. So, it will be necessary to remember the formulas for finding the area of ​​a square and a rectangle.

Using very simple formulas, you can calculate the area of ​​a rectangle and a square.

Multiply the lengths of the sides of the rectangle. We get the desired area. Let's practice.

1. We have a rectangle with sides 80 cm and 50 cm. We multiply these numbers: 80 * 50 \u003d 4000 cm². This will be its area.
2. Sides 322 cm and 300 cm. We get: 322 * 300 \u003d 96000 cm².
3. There is a square with a side of 60 cm. Its area is 60 * 60 = 3600 cm².

In the case of a square, the length of the side can be squared - you get the same thing. But you can not fool your head. It's easier to remember that you need to multiply the sides.

The simplest calculator for calculating the area of ​​a rectangular room.

When calculating the amount of necessary finishing materials for repair work, it is necessary to know such a value as the area of ​​\u200b\u200bthe walls. This is necessary so that consumables turn out to be neither less nor much more than necessary. To calculate the area of ​​\u200b\u200bthe walls, it is not necessary to resort to the services of measurers. You can do everything yourself and remember the school curriculum in geometry, which mentions formulas for finding areas. If the relationship with geometry did not work out, then this article will definitely help you find the desired value, sorting everything out.

Wall area calculation algorithm
To calculate the area of ​​​​the walls, you need to look into a math textbook and find the formulas for finding the perimeter and area of ​​\u200b\u200bgeometric shapes. To calculate the area of ​​\u200b\u200bthe walls of a rectangular room, you can use a convenient algorithm:

1. We measure the length and width of the room. If the room is rectangular, then you need to measure the length of the two adjacent walls. These values ​​​​will be enough to calculate the perimeter.
   
2. Calculate the perimeter of the room. To do this, we use the formula P=(a+b)×2, where a and b are the length and width of the walls. To find the perimeter of a non-standard room, you just need to add up the width of all the walls.
   
3. We measure the height of the room. The distance from floor to ceiling can be measured by the corner of the room. This will be her height.
   
4. Find the area of ​​the walls. To calculate the area of ​​​​the walls, you need to use the formula S \u003d P × h, where h is the height of the room.
   

For example:

• width of one wall - 4 m;
  
• another width - 3 m;
  
• room height - 2.5 m.
  

Then P=(4+3)×2=14 m; and S \u003d 14 × 2.5 \u003d 35 m².

But that is not all. There is an area in the room that does not need to be trimmed. This is the area of ​​windows and doors. You need to calculate the area of ​​\u200b\u200bthe walls taking into account these values ​​in order to get a more accurate result. To do this, from the area of ​​\u200b\u200bthe walls you need to subtract the area of ​​\u200b\u200bwindows and the area of ​​​​doors. For example, in a room there is one window 1.3x1.5 m and one door 61x192 cm. Then the window area will be 1.95 m², and the door area 1.1712 m². We add these two values ​​​​and subtract from the area of ​​\u200b\u200bthe walls: 35-(1.95 + 1.1712) ≈ 32 m².

If the room is not standard
If the room is different from a rectangular shape, then you can calculate the area of ​​\u200b\u200bthe walls of the house in another way. To do this, you need to calculate the area of ​​\u200b\u200beach wall separately and add up the results, first subtract the area of ​​\u200b\u200bwindows and doors in the walls. The formula will look like S=S1+S2+S3+S4.

In special documentation, or a technical passport, both the area and perimeter of both the entire apartment and the dimensions of individual rooms must be indicated. If such a "piece of paper" is absent, then you can calculate the area of ​​\u200b\u200bthe walls on your own. No wonder they taught us at school!