How to get square meters out of your house or land? Get it with the 2024 guide!

On the other hand, knowing how to calculate square meters (m²) helps you to have an adequate arrangement of different elements within your home, as well as to purchase furniture with precise measurements without wasting your money and space. Continue reading and discover how you can get square meters quickly and easily yourself!

To calculate the square meters (m ² ) of a room you must multiply the length by the width, both values ​​established in linear meters . For example, if the room measures 8 linear meters long by 4 meters wide, its measurement is 32 square meters, as you can see in the following equation:

8m x 4m = ^32m2

The calculation of square meters of a plot of land is done by multiplying the length by the width in meters . The difference with the calculation of a room is that a piece of land has larger dimensions, so we recommend using a 30-meter measuring tape to facilitate the process, in addition to following the following steps:

1. Measure the length of the land in meters. If you do not have a 30 meter measuring tape, measure in parts and mark points according to the range of your measuring tool; then add the values ​​of each mark and obtain the total length.
2. Measure the width of the land in meters.
3. Multiply the length by the width of the land and obtain its measurement in square meters.

To extract the square meters of a wall, a procedure similar to that used on horizontal surfaces is used. In this sense, below we share the steps with which you can do it very easily:

1. Use a tape measure to measure the length of the wall in meters. If the reach of the metal tape is not enough, measure in sections and place a small mark with a pencil or other useful instrument.
2. If you measured in sections, add the values ​​of each mark and obtain the total length of the wall.
3. Measure the width of the wall and make marks with a pencil if necessary.
4. If this is the case, add the values ​​of each mark to obtain the total width.
5. Multiply the length by the width; The result will be the measurement of the wall in square meters.
6. Repeat the procedure for each wall and then add their measurements in square meters.

Multiply the length by the width of the windows and doors that are in the room and subtract the results from the value obtained in step 6. What you obtain from this operation is the total measurement in square meters of wall that a given room has without considering Windows and doors.

Calculating the square meters of a house is simple as long as you consider some aspects that will prevent you from making certain mistakes when carrying out said calculation. Therefore, before presenting the procedure to carry it out, we share with you the most important points that you should take into account.

• The square meters of a piece of land are not equivalent to the square meters of construction of a house that is located on it.
• Any roofed or covered surface is part of the square meters of construction, even if it does not have walls; for example, an overhang.
• Check the construction guidelines for your area to determine the square footage.
• In some cases, roofs made with materials other than reinforced concrete are not included in the square meters of construction, or are counted in a lower percentage.
• Consider whether your house has one, two or more floors, since for each of them there are square meters to add or subtract.
• The thickness of the walls of a house also adds to the total meters that measure the length and width of a home. Keeping this in mind is especially helpful when you need to measure the inside of your house.
• If the calculation of material to build a house is being carried out, the square meters that do not involve the use of the same must be deducted; for example, those in the area under an overhang.

Considering the previous details, below we present the basic procedure that you must follow to calculate the square meters of a house easily and correctly.

1. Make a diagram of your house looking at each floor separately.
2. Measure the length and width of each floor as a simple figure, whether quadrangular or rectangular, even if it has unbuilt areas.
3. Obtain the square meters of these figures separately. To do this, multiply the length by the width and write down the results.
4. Measure the length and width of areas that can be added or subtracted from the total square footage of both floors of your home (depending on whether they are roofed, covered or not), such as patios, balconies and overhangs.
5. For each floor, obtain the square meters of each of these areas by multiplying its length by its width.
6. Subtract or add for each floor the square meters of said areas to the square meters obtained in step 3.
7. Add the square meters of each floor and thus obtain the square meters of construction of your house.

Removing square meters from an irregular 4-sided terrain may seem very complicated at first glance, but don’t worry! Below we will guide you so that you can do it yourself in an easy and quick way. Additionally, you can return to this article whenever you want to check if you are doing it correctly.

Before starting the procedure itself, you should know that the geometric figure formed by 4-sided irregular terrain is called a quadrilateral, which is a semi-rectangular figure, whose sides have different measurements.

Quadrilaterals can be divided into two triangles of different sizes by drawing a diagonal from one angle to another, which in turn makes it possible to calculate the square meters of this type of land. Likewise, it is important to detect if one of these triangles has a right angle of 90 degrees (right triangle), since this implies a small difference in the calculation.

Considering the above, we will immediately break down the steps you must follow to obtain the square meters of an irregular terrain with 4 sides, considering two examples, of which the first presents a right triangle.

Example 1:

1. Cordon off the perimeter of the land from which you will remove the square meters using stakes and marking tape. If the perimeter of the land is fenced or surrounded by other level properties, it will not be necessary to do so.

2. Measure each side of the land with a 30-meter tape measure to facilitate the process. Write down your measurements.

3. Divide the land into two triangles by making a diagonal. To get a clear idea of ​​this step, place flagging tape in that position.

4. Calculate the square meters of the right triangle, for which you must use the formula of base times height divided by two (bxh ÷ 2):

134 m x 149 m ÷ 2 ＝ 9983 m²

5. Obtain the measurement of the diagonal of the terrain with the measuring tape or by taking the square root of the base squared plus the height squared: √b² + h²:

134² + 149² ＝ 40,157 m²

and then:

√40,157 m² ＝ 200.39 m

Calculate the semiperimeter of the second triangle. The semiperimeter is half the perimeter (p), and its symbol is the letter “s”. To obtain it, find the perimeter by adding the measurements of the three sides of the triangle and divide the result by 2:

P ＝ 200.39 m + 184 m + 230 m ＝ 614.39 m

and then:

S ＝ 614.39 m ÷ 2 ＝ 307.195 m

Calculate the square meters of the second triangle using the following formula: √s (s − a) (s − b) (s − c), where “√” is the square root, “s” is the semiperimeter, and “a” , “b” and “c” are the sides of the triangle:

So:

√307.195 m (307.195 m − 200.39 m) (307.195 m − 184 m) (307.195 m − 230) 

√307,195 m (106,805 m) (123,195 m) (77,195 m) 

√312,023,985,981 m＝17,664,200 m²

Add the square meters of the first triangle (obtained in step 4) and those of the second to obtain the total square meters of the land:

9983 m² + 17,664,200 m² ＝ 27,647 m²

Example 2:

1. Cordon off the perimeter of the land as in the first example.

2. Measure each side of the land in meters and write down its measurements.

3. Divide the land into two triangles by making a diagonal as in example 1.

4. Obtain the diagonal measurement with the tape measure.

5. Calculate the semiperimeter of the first triangle. To do this, find the perimeter by adding the measurements of its three sides and divide the result by 2:

P＝4m+9.5+10.5m＝24m

and then:

S ＝ 24 m ÷ 2 ＝ 12 m

6. Calculate the square meters of the first triangle using the formula in example 1: √s (s − a) (s − b) (s − c):

So:

√12 m (12 m − 4 m) (12 m − 9.5 m) (12 m − 10.5)

√12m (8m) (2.5m) (1.5m)

√360 m ＝ 18.97 m²

7. Obtain the semiperimeter of the second triangle:

P＝9m+5+10.5m＝24.5m

and then:

S ＝ 24.5 m ÷ 2 ＝ 12.25 m

8. Calculate the square meters of the second triangle:

√s (s − a) (s − b) (s − c)

So:

√12.25 m (12.25 m − 9 m) (12.25 m − 5 m) (12.25 m − 10.5 m)

√12.25m (3.25m) (7.25m) (1.75m)

√505.12 m ＝ 22.47 m²

9. Add the square meters of the first triangle (obtained in step 6) and those of the second triangle to obtain the total square meters of the land:

18.97 m² + 22.47 m² ＝ 41.44 m²

Obtaining the square meters of a rectangular plot of land is easier than calculating those of an irregular plot of land with 4 sides, since you only have to multiply the length by the width . However, we summarize the process below:

1. Measure the length of the land in meters: if you do not have a 30-meter measuring tape, measure in parts and then add the values ​​of each mark to obtain the total length.
2. Measure the width of the land in meters.
3. Multiply the length by the width and obtain the measurement of the rectangular land in square meters.

To calculate the square meters of a floor, measure its length with a flexometer; Subsequently, obtain the measurement of its width in the same way. Both values ​​must be in meters. Once you have the length and width of the floor, multiply them; The result of this operation is its total measurement in square meters .

As you may have realized, the most complicated thing is not knowing how to calculate square meters, but rather the precision when carrying out all the calculations that we have presented to you. Keep in mind that carrying out these types of procedures yourself will help you save money, perhaps even on more than one occasion.

Do you want to build your house and are you looking for where to get materials of excellent quality and price? Get a free quote for cement, electro welded mesh, rod, wire rod and annealed wire with just a call to a sales executive at Aceros Crea , through the number 55 5888 9272 or through WhatsApp .

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