Square meters calculator

Calculate instantly online! Your math assistant for calculating square meters () easily, you can even convert to other units.

Square Meter Calculator



Total Area

0.00 m²




Conversion result

0.000

Other options for calculating square meters?

Calculate square meters of a rectangle
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Formula: Area = Base × Height


Total Area

0.00 m²

Calculate square meters of a circle
+
Formula: Area = π × r² (where r is the radius)

Total Area

0.00 m²

Calculate square meters of a triangle
+
Formula: Area = (Base × Height) ÷ 2


Total Area

0.00 m²

Calculate square meters of a regular polygon
+
Formula: Area = (Perimeter × Apothem) ÷ 2

Apothem: It is the perpendicular distance from the center of the polygon to any of its sides. In other words, it is the segment that connects the center of the polygon with the midpoint of any side, forming a 90° angle.



Total Area

0.00 m²

Calculate square meters of an irregular polygon
+
To calculate the area of an irregular polygon, there are several methods:

1. Triangulation method: Divide the polygon into triangles and add up their areas.

2. Coordinate method or shoelace formula: If you know the coordinates (x,y) of all vertices, you can use the formula:
Area = 0.5 × |∑(xi × yi+1 – xi+1 × yi)|

3. Grid method: Overlay a grid on the polygon and count the squares that fall inside.

For complex irregular polygons, it is recommended to use specialized software such as AutoCAD, or measurement tools like Google Earth Pro for large areas.


Want to see other calculation tools?

The previous online calculator is a tool to calculate surfaces with square meter, based on length. The application uses the formula Area = Length × Width (Side × Side) to obtain (Square meters).

How to calculate square meters of different types of surfaces
How to calculate square meters of regular and irregular surfaces

Also, TThe application features a square meter calculator that allows converting meter to square meter by simply selecting one of the conversion options.

How does the square meters calculator work?

To calculate m² square meters, follow the steps:

1.- Data entry:

  • You must enter the side value (width) in meters and also provide the side (length) in meters.

2.- Calculation of total m² area:

  • The calculator multiplies Side × Side to automatically obtain the total area in square meters (m²).
  • The result is automatically displayed in the section titled “Total Area”.

In addition, the application allows you to perform other calculations to obtain the square meters (m²) of:

  • Square meters of a rectangle: The formula is Area = Base × Height.
  • Square meters of a circle: The formula is Area = π × r² (where r is the radius).
  • Square meters of a triangle: The formula is Area = (Base × Height) ÷ 2.
  • Square meters of a regular polygon: The formula is Area = (Perimeter × Apothem) ÷ 2, where the “apothem” is the segment – or distance – from the center of the polygon to the midpoint of any side, forming a 90° angle.
  • Square meters of an irregular polygon: Although there are several methods, the simplest is to divide the polygon into triangles and sum their areas.

Optionally, the m² calculator also allows converting the calculated area to other units and even entering a new value in m², if necessary. Subsequently, you will have the option of a dropdown menu to “Select unit” for conversion.

Example of square meters calculation:

  • If we have a length of 5 m on one side and 4 m on the other side, we would apply the formula: Area = 5 × 4 = 20 m².
  • If we have a distance of 20 m on one side and 10 m on the other side, we would apply the following formula to calculate square meter: Area = 20 × 10 = 200 m². And if we want to convert the area from m² to ares, the calculator will perform the calculations: Area = 200 m² × 0.01a = 2.00 ares.

Examples of how to calculate square meters of rooms and land
How to calculate square footage of a room and land – By OVACEN

Calculating a room’s surface area in m²:

  • Step 1: Measure the length of the room with a tape measure. Let’s assume you get 4.5 meters.
  • Step 2: Measure the width of the room. Let’s assume it measures 3 meters.
  • Step 3: Apply the main surface area formula (Area = Length × Width).
  • Result: 4.5 m × 3 m = 13.5 m². The room has a total surface area of 13.5 square meters.

Calculating the surface area of a plot of land or lot in m²:

  • Step 1: Measure the total length of one of the long sides of the land. For example, 25 meters.
  • Step 2: Measure the width of the land on the perpendicular side. For example, 12 meters.
  • Step 3: Multiply both linear dimensions.
  • Result: 25 m × 12 m = 300 m². The land has an exact area of 300 square meters.

What units can you convert in the m² calculator?

The square meters calculator allows the following conversions from m² to other units which are:

  • Convert from m² to Square kilometer (km²)
  • Convert from m² to Hectare (ha)
  • Convert from m² to Are (a)
  • Convert from m² to Square meter (m²)
  • Convert from m² to Square decimeter (dm²)
  • Convert from m² to Square centimeter (cm²)
  • Convert from m² to Square millimeter (mm²)
  • Convert from m² to Square mile (mi²)
  • Convert from m² to Acre (ac)
  • Convert from m² to Square yard (yd²)
  • Convert from m² to Square foot (ft²)
  • Convert from m² to Square inch (in²)
  • Convert from m² to Rood (ro)
  • Convert from m² to Square perch (p²)

Meters to Square Meters

To convert linear meters to square meters by area, the process consists of calculating the surface of the geometric shape of the space. If, for example, you have a wall that is 5 linear meters long and you need to know its surface area to paint it, you must also measure its height.

To calculate m², if the height is 2 linear meters, you will multiply both dimensions (5 m × 2 m = 10 m²). This is the standard method for transforming simple length measurements into square areas.

Table for Converting to m²

Below, we provide a table with several values already calculated based on 1 m² so you can consult them quickly:

Unit 1 m² Equivalent
In Metric System
Square millimeters (mm²) 1,000,000 mm²
Square centimeters (cm²) 10,000 cm²
Square decimeters (dm²) 100 dm²
Square decameters (dam²) 0.01 dam²
Ares (a) 0.01 a
Hectares (ha) 0.0001 ha
Square kilometers (km²) 0.000001 km²
In Imperial System:
Square inches (in²) 1,550.0031 in²
Square feet (ft²) 10.7639 ft²
Square yards (yd²) 1.19599 yd²
Acres (ac) 0.000247105 ac
Square miles (mi²) 0.000000386102 mi²

Conversion Table from m²

Below, we provide a list for converting from m² to other surface units so you can consult them quickly:

To convert from m² to: Multiply m² by:
Metric System
Square millimeters (mm²) 1,000,000
Square centimeters (cm²) 10,000
Square decimeters (dm²) 100
Square decameters (dam²) 0.01
Square hectometers (hm²) 0.0001
Square kilometers (km²) 0.000001
Imperial System
Square inches (in²) 1,550.003
Square feet (ft²) 10.7639
Square yards (yd²) 1.19599
Acres (ac) 0.0002471
Square miles (mi²) 0.0000003861
Land Units
Ares (a) 0.01
Hectares (ha) 0.0001
Centiares (ca) 1

When speaking and writing about square meters, it is common to find abbreviations for m², whether due to context, country, or even keyboard limitations. The most common abbreviations are:

  • m²: The official and universal symbol in the International System of Units, standardized by ISO Standard 80000-3.
  • m2: Widely used in digital environments or fast typing where it is not possible to insert or write the number “2” as a superscript.
  • sq m / sq. m.: The direct abbreviation for square meters, frequently used in English-speaking countries or international transactions.

🟧 Any questions about the online application to calculate square meters you can contact us from the contact section in the footer.

Frequently asked questions about the square meter – FAQ


What is a square meter and what is it used for?

A square meter (m²) is a unit of area that represents the surface of a square measuring one meter on each side. It is used to measure spaces such as housing, land, rooms, walls, ceilings, or floors.

What is the symbol for a square meter?

The symbol for a square meter is m².

How do you calculate a square meter?

You multiply the length by the width of the surface you want to measure. For example, if a room is 3 meters long and 4 meters wide: 3 m × 4 m = 12 m².

How do you calculate the area of a square or rectangle?

To calculate the area of a square or rectangle, you simply multiply the length by the width.

How do I calculate the area of a room in m²?

To calculate the area in square meters, measure the length and width of the room in meters and multiply them. For example, if a room is 4 meters long by 3 meters wide, the area would be 4 m × 3 m = 12 m².

What is the difference between m² and m³?

A square meter (m²) measures two-dimensional area, while a cubic meter (m³) measures three-dimensional volume. An m³ is a cube with dimensions of 1 meter on each side.

How can I convert square feet to square meters?

To convert square feet (ft²) to square meters, multiply the number of square feet by 0.092903. For example, 100 ft² is approximately 9.2903 m².

How do I measure the square meters of an irregular space?

Divide the space into regular shapes (rectangles, triangles, etc.), calculate the area of each one, and then add them together.

How do I convert square meters to other units?

To convert square meters to other units, you can use conversion tables or an online calculator like the one from OVACEN for square meters. For example, 1 m² = 10,000 cm².

How is the square footage of a room calculated in square meters?

To calculate the square meters of a room, measure the length and width in meters and multiply them. For example, if a room is 5 meters long by 4 meters wide: 5 m × 4 m = 20 m².

What formula is used to calculate square meters?

The most common formula to calculate square meters is: length × width. This formula is used for square or rectangular surfaces, such as rooms, walls, ceilings, floors, or land.

How do you convert meters to square meters?

You cannot directly convert meters to square meters, because a meter measures length and a square meter measures area. To get m², you need two measurements: length and width, and then multiply them.

How much is 1 square meter in cm?

1 square meter is equal to 10,000 square centimeters (cm²), because 1 meter is 100 centimeters and 100 cm × 100 cm = 10,000 cm².

How do you calculate the square meters of a piece of land?

To calculate the square meters of a piece of land, measure the length and width if it has a rectangular shape and multiply them. If the land is irregular, divide it into simpler shapes, calculate each area, and add the results.

How do you calculate the square meters of a circle?

To calculate the square meters of a circle, use the formula: area = π × radius². For example, if the radius is 2 meters, the area would be 3.1416 × 2² = 12.5664 m².

How do you calculate the square meters of an irregular polygon?

To calculate the square meters of an irregular polygon, divide the shape into simpler forms, such as triangles or rectangles. Then calculate the area of each part and add all the results together.

How do you calculate the area of a rectangle?

The area of a rectangle is calculated by multiplying the length by the width. For example, if it is 6 meters long and 3 meters wide, the area will be 6 m × 3 m = 18 m².

What units can be converted to square meters?

Area units such as square centimeters (cm²), square kilometers (km²), square feet (ft²), square inches (in²), square yards (yd²), hectares, and acres can be converted to square meters.