Even if all the necessary values are indicated in the technical passport and documentation for housing and a plan is attached, not always all this is at hand.
Then you have to arm yourself with a tape measure and, after taking necessary measurements, calculate what you need yourself. In this article, we will learn how to calculate the area of \ u200b \ u200bthe walls of a house.
When is it necessary?
The comfort of living in a room is usually assessed by its dimensions. Then why do we need wall space? This is an auxiliary quantity, important for estimating the amount of consumables required when repairing.
Knowing the area of \ u200b \ u200bthe walls in a room or apartment, you can buy the required amount of consumables, be it wallpaper, paint, whitewash or tiles.
The width and length of a roll of wallpaper are known so that allows you to calculate the required amount of material by the area of the walls, on cans of paint, the recommended consumption is also indicated in grams per square meter, the tile, with certain dimensions, also has a known area.
Calculation of the area of the walls
To count, you need to use the famous school formula for the area of a rectangle.
Even if the room is of the most "irregular" shape, the walls can be "unfolded" (of course, mentally), and we get a rectangle with a length equal to the perimeter of the room, and a height equal to the height of the room.
And the area of a rectangle is equal to the product of its sides. One side is the perimeter of the room, the other is its height. The perimeter of the room is the sum of the lengths of all sides of a flat figure representing the floor, or, more simply, the length of all skirting boards.
Rectangular room
If the room is simple in shape, the length of the perimeter can be measured by taking a few necessary measurements. The height usually measured in any corner of the room, from floor to ceiling. Linear dimensions should be measured in meters, then the area will be expressed in square meters.
Example: The perimeter of the room is 13.90 m, the height is 2.65 m.Wall area = 13.90 x 2.65 = 36.84 sq. m.
To calculate the perimeter of a rectangular room, it is enough measure the length and width of the room, add them up and multiply by 2.
Example: length 4.1 m, width 2.85 m. Perimeter = 2 x (4.1 + 2.85) = 13.90 (m).
Wrong shape
The perimeter of an irregular room can be measured by carefully stretching a string or wire along the perimeter along the baseboards, while twine around all ledges, bends, and then measure with a tape measure the length of the twine that corresponds to the perimeter.
Wall shape can be complicated by the presence of niches and protruding parts... Sometimes these elements can be neglected, but if it is necessary to take them into account, it is necessary to use the formula for the area of a rectangle - to take into account all this additional area.
In the form of a trapezoid
A room in the form of a trapezoid of 4 walls, two opposite ones are parallel to each other, and the other two are not. In this case, you can measure the lengths of all 4 sides separately and fold. This will be the perimeter of the room.
There is a complex formula that allows calculate the fourth by the measured length of 3 sides, but easier to measure than calculate.
Example: The sides of a room with a trapezoidal floor of 3, 4, 6 and 5 m. Perimeter = 3 + 4 + 6 + 5 = 18 (m).
Read also about the standard window size for houses of different types.
Round shape
If the room is strictly round, the perimeter can be calculated by by measuring its diameter (diameter) and multiplying it by pi equal to (rounded off) 3.14.
Example: diameter 2.7 m, perimeter = 3.14 x 2.7 = 8.48 (m).
Windows and doors in material calculation
If you paste over the walls of a room with wallpaper or paint with paint, from the area of the walls calculated as described above it is necessary to subtract the area of windows and doors.
Windows and doors are usually rectangular in shape, and to determine their area just measure their width and height, and multiply.
Example: in a room with a wall area of 36.84 sq. m. there is a window measuring 1.30 by 1.40 m and a door measuring 0.80 by 2.05 m. The area of the window is 1.30 x 1.40 = 1.82 sq. m, the door area is 0.80 x 2.05 = 1.64 sq. m. The area of the walls without windows and doors is 36.84 - 1.82 - 1.64 = 33.38 sq. m.
Or here's another illustrative example:
How to calculate the consumption of wall paint?
Consumption is indicated on the paint can 100 g / m2 Let's calculate the amount of paint required to paint the walls of a room with a wall area 33.38 sq. m.
We multiply the consumption, expressed in kilograms per 1 square meter, by the area of the walls without windows and doors, we get 0.1 x 33.38 = 3.34 (kg)... Obviously, you can get by with a can of 3.5 kg of paint. Similar to this example, you can count other finishing materials.
I will give an example of calculating the floor or ceiling of a room (kitchen) in square meters.
The calculation formula is simple, S = a * b, where S is the area, a and b are the length and width of the room, respectively.
In our example (a drawing with measurements), instead of small letters, the length is A and the width is B., and the opposite walls are G and B.
If we have a room length of 5 meters and a width of 3 meters, then we need (5 * 3 = 15 sq.m.), as a result we get 15 sq.m. by gender
Take advantage of our Calculator to calculate floor or ceiling area
If you do not want to manually calculate the floor area or if you did not understand something when describing the calculations, then you can use with our calculator and calculate floor or ceiling area automatically.
For the calculation you need measure in meters length, width of the room and enter the data in order by filling out the form and you will automatically receive a calculation floor or ceiling area in square meters.
Floor area calculator
Note:
Please note that measurements must be taken in meters. Those. if you received the length of the room 964 centimeters, then in the form fields you must enter the value 9.64. Please note that fractional numbers must be entered with a dot, not a semicolon!
Those. 2.6 - wrong, 2.6 - correct
Calculator counts not only floor or ceiling area, this calculator can also be used to calculate the area of any other rectangular objects that have a length and width. In this case, instead of the width and length of the room, you need to substitute the values of the width and length of these very objects (windows, doors, etc.,) for example such as area of windows and doors.
If our window dimensions are 1.6 meters wide and 1.5 meters high.
- and the doors are 0.8 meters wide and 2.05 meters high.
Window: (1.6 * 1.5) = 2.4 sq.m., as a result we get a window 2.4 sq.m.,
Doors: (0.8 * 2.05) = 1.64 sq.m., as a result of the door we get 1.64 sq.m.,
When starting a renovation, the first step is to determine the required amount of building materials. The calculations can be made by specialists who will perform the work. But they often make calculations with a large margin of error in their favor. Consider how to independently calculate the area of the walls.
For calculations you will need:
- construction level;
- tape measure with a limiter;
- long ruler and square;
- pencil and paper;
- calculator.
To apply dimensions, we will draw a diagram of the rooms. Let's designate doors, windows, niches, ledges. The measurement results are plotted on the drawing.
How to calculate the area of rectangular walls
We measure the height (h), length (a), width (b).
Area: S = P × h
Perimeter: P = (a + b) × 2
We measure the length and width of the rooms along the plinth.
Height - by vertical angle.
P = (5 + 4) × 2 = 18 m;
S = 18 × 3 = 54 m².
How to correctly calculate the area of walls with a complex surface
Not all rooms have a strict rectangular shape. Buildings often contain intricate architectural elements that complicate the calculation.
How to calculate the squaring of walls minus openings
When determining the exact amount of work, subtract the dimensions of windows and doors from the total number of square meters of walls in the room. To do this, along the edge of the frame we measure the width and height of the window, along the edge of the box - the dimensions of the door.
By multiplying the length and width of the openings, we get the size that must be subtracted.
We act similarly if stoves, fireplaces, radiators need to be excluded from the calculated quadrature of the room.
The room has a 2.5 mx 1.5 m window and a 0.9 mx 2.1 m door.
The S of the window is 2.5 × 1.5 = 3.75 m².
The S of the door is 0.9 × 2.1 = 1.89 m².
S of walls minus openings is 54 - 3.75 - 1.89 = 48.36 m².
Determination of the area of rooms of irregular shape
To determine the perimeter of buildings of any configuration, add the lengths of all walls, including ledges and niches.
Figure 1. Element with a ledge.
It is possible to measure rooms of irregular shape by dividing the surface into several simple shapes.
If you have a room with a rectangular ledge, you have two shapes that can be easily squared, then folded.
If the element contains a semicircle, for the calculation you need to split it into a semicircle and a rectangle.
Figure 2. Element with a semicircle.
How to Count Square Meters of Walls with Round Elements
There are round and semicircular residential buildings or structures with elements of windows or doors in the form of an arch.
Their perimeter can be determined by multiplying the diameter by the number π (Pi) = 3.14.
We determine the quadrature of vertical surfaces by multiplying the resulting value by the height from floor to ceiling.
The S of the circle is equal to the square of the radius times the number π; semicircle - half this value.
If it is necessary to subtract the area of round columns or semicircular protruding elements from the quadrature of the room, if it is impossible to measure the diameter or radius, measure the circumference (P) and apply the formula: S = P² / 4π.
How to calculate the square meters of triangle structures
In the case of a room with triangular elements, we can apply several formulas, depending on the type of figures:
Figure 3. Formulas for determining the area of triangles.
Where a, b, c are the lengths of the sides of the triangle; p is the perimeter.
Room volume
Calculating the area of \ u200b \ u200bthe walls of the house on a calculator
The calculations will be greatly facilitated by special programs, which include the construction calculator in the online version.
To see how many square meters the walls make up minus the openings, it is enough to select the geometric shape of the room and enter the indicators:
- width;
- length;
- height;
- number of openings;
- sizes of windows and doors.
The building calculator will calculate the amount of finishing materials needed for your renovation.
It must be remembered that the geometric parameters of buildings can rarely be perfect. Therefore, to determine the exact values, it is better to take measurements in several places, and then display the arithmetic mean. For example, when calculating the area of a room along the walls, it is better to measure the length along the ceiling, baseboard and in the middle of the vertical plane. Height - at the corners and in the middle of the wall along a plumb line.
To calculate the perimeter in the presence of many protrusions and niches of different shapes, it is necessary to lay a cord along all the elements, then measure it with a tape measure.
Having calculated the exact parameters, you can go to the store for building materials. It is better to show the dimensioned diagrams to the sales assistant. A specialist will help you calculate the consumption of materials, taking into account the overlap, the selection of wallpaper patterns or losses when cutting tiles.
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 living space.
To do this, you need to be able to correctly measure the room.
This article describes in detail how to do this.
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classmates
Where to start measuring
Each room has 3 indicators to measure:
- Length. The most common values are 4 or 4.5 meters.
- Width. In a standard apartment building, the width of the rooms is 3 or 3.5 meters.
- 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 need the following tools:
- roulette;
- pencil;
- paper;
- calculator.
Algorithm for calculating the quadrature of the room
For the calculation, you must apply the area formula: S = 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 area of the room by floor: S = 5 m * 3 m = 15 m2. You will need this data when purchasing a floor covering or installing a stretch ceiling.
We calculate the area of the room along the walls using the following formula:h *(a*2+ b*2).
We calculate as follows: 2.5m * (5m * 2 + 3m * 2) = 40 m2.
In order to obtain net values of the area, it is necessary to subtract the area of doors and windows from 40m2.
Doors and window openings
Width = 0.8m, Height = 2.0m.
We multiply the indicators by each other: S = 0.8 m * 2.0 m = 1.6 m2.
A standard window in a multi-storey building has the following dimensions:
Width = 1.6 m, height = 1.5 m. In the course of the product of two numbers, we get the area: S = 1.6 m * 1.5 m = 2.4 m2.
S net = 40 m-2.4 m-1.6 m = 36 m2.
Master's note: determining the net area will help you find the right amount of wallpaper tubes, drywall sheets and other finishing materials.
Irregular room
So, let's look at specific examples of how to calculate the footage:
- 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 the kitchen walls for.
Kitchen data:
Height = 2.5 m;
Width = 3 m;
Length = 3.5m.
Door size: width = 0.8 m, height = 2.0 m;
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;
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 clean = (50 cm * 2) + (30 cm * 2) * 2.5 m = 400 cm2 or 0.40 m2;
Built-in shelf: S clean = (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 clean square meters by subtracting their total area: S clean kitchen walls = 32.5 m2 - 1.8 m2- 1.6 m2- 0.40 m2- 0.35 m2 - 0.11 m2 = 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.
The standard tube has the following dimensions: width = 50 cm, length of the sheet = 10 m. The height of the walls of the apartment is 2.5 m, which means that 4 paper sheets are included in one tube: 10 m / 2.5 m = 4 sheets.
Let's calculate how many pipes are needed to:
28.24 m2 / 4 = 7.06 tubes. But since the paper web can contain a drawing with a step of 0.3 or 0.5, then the number of tubes should be rounded up to 8.
- Bathroom. Let's calculate the number of tile boxes for a standard bathtub. In order to correctly calculate the square of the room, it is necessary to take measurements taking into account the trimming of the ceramic tiles.
We know the standard door size: width = 0.8 m; height = 2.0 m.
The size of a typical bathroom is: 2.3 m wide; length = 1.6 m, height = 2.5 m.
We calculate the net area of the bath:
S bath = (2.3 m * 2) + (1.6 m * 2) * 2.5 m = 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 is of the following sizes: 10x10; 10x20; 20x30; 30x30. Let's take a more common option: 30x30.
One package contains 10 pieces and, knowing the size of the tiles, you can calculate the number of pieces per 1 m2:
Determine the number of whole tiles and the amount of trimming:
17.9 m2 / 9 = 1.9 - round up and get 20 boxes of whole tiles;
20 * 7 = 140 small tiles, 10x10.
If you lay the tiles on a plane without trimming, then you should take 20 boxes, and if with trimming, then 16.
- Balcony. To obtain a net balcony area, it is necessary to measure the glazed frames. The perimeter of the balcony is measured without taking into account the windows.
- Garage. Typically, a garage is a box with a small window. To calculate the net area, you need to measure the dimensions of the gate.
Measure the area of a round window, ceiling, walls of a building in the form of an irregular shape or 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. Calculate the radius: 100 cm / 2 = 50 cm - this is ¼ of a circle in the form of a triangle.
If we visually divide the circle into 4 parts, and connect the points 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 each. It remains to find the area of a square, where all sides are 50 cm. You can calculate the total area of any structure using the online program.
Watch the video in which the master explains in detail how to correctly calculate the area of \ u200b \ u200bthe walls in an apartment:
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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. Or you can do it yourself. This article is devoted to how to calculate the area of a room of different shapes.
Read in the article
Why do you need to know the area of a room and what is required for calculations?
In what cases is it necessary to calculate the area of the room?
- Of course, first of all, to determine the quantity to be repaired. Many buy them with a stock, and the surplus is returned to the store. However, in this case, a lot of time is wasted, and besides, not all stores provide such a service. Therefore, it is more advisable to correctly calculate the area of all surfaces before shopping.
- Besides, knowing the area is easier. Indeed, even the cost of the work of hired workers in most cases depends on how many square meters they have to process.
- The amount also depends on the area. However, in most cases, they do not resort to complex calculations when choosing luminaires; this issue is usually solved empirically.
- And the last thing. One of the main quantities in an apartment is the volume of premises (in this case, it is necessary to multiply the area by the height), because, depending on it, they are selected.
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 depends on it. For example, the developer (in the case of equity participation in the 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 do you start? First you need to prepare the room to be measured and the instruments.
Measurements are preferably carried out in a completely empty room. If this is not possible, clear at least areas near the walls, because it is along them that measurements will be taken.
Important! If the room is rectangular, check that the shape is correct before starting measurements. To do this, compare opposite diagonals. If they are equal, you have a regular equilateral rectangle in front of you.
So, to determine the area of \ u200b \ u200bthe room, the following are necessary:
- Roulette. Of course, an electronic device is more convenient, but it has a large margin of 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.
- Pencil.
- A piece of paper for calculations and recording the results.
- Calculator.
In addition, you may need a long ruler to check the evenness of the walls.
How to calculate a square meter?
In square meters, in most cases, the area of any surface is calculated. So how do you calculate a square meter?
First, if the room is rectangular, you need to measure its length and width. In this case, it is advisable to use a tape measure with marked divisions of centimeters and millimeters. If you only managed to find a ruler with feet, it doesn't matter, they can be easily converted to square meters.
Further, the two obtained values in centimeters are converted into meters (it's easier to do this right away) by dividing by 100. Then the two values are multiplied, the resulting value is the area of the room in square meters. If you have feet, multiply the values first so you get square feet. Then multiply that value by 0.093 to convert to m2 (if measured in yards, multiply by 0.84). In this case, for calculating square meters, a calculator is an excellent solution.
Interesting! There are many online square meters calculators on the Internet for calculating the area of a room. If a computer is at hand, this will be the fastest way.
When the figure is received, round it to 2 decimal places, a more precise value will be superfluous.
How to calculate the area of a room yourself?
The perfect room is rare. How do you know the area of a room with ledges, niches or curved bevels? The simplest thing is to measure the lengths of all walls, as well as the angles between them, and then draw a plan of your room on a piece of paper (the scale is likely to be 1: 100, that is, one centimeter on paper will correspond to one meter in the room) ... 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 a room yourself?"
How do I find the area of a rectangle?
How to calculate the area of a rectangle yourself? A regular rectangular room is the simplest case. To calculate the area of a rectangle, simply multiply its length and width. However, there are also nuances in this situation:
- After measuring one of the sides, the second one must be measured strictly perpendicularly. Otherwise, measurements can be obtained with a significant error.
- To avoid inaccuracies, measure both parallel walls, since often their lengths are somewhat different, and for accuracy it is advisable to take their arithmetic mean. That is, add up their values and divide by 2.
- 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.
