Calculadora de Área do Imóvel
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
área = comprimento × largura; custo/m² = preço / área
About this calculator
The Property Area Calculator is a practical tool to quickly determine the total area of a rectangular room, such as a bedroom, living room, or office. Simply enter the length and width in meters, and the calculator performs the multiplication, providing the result in square meters (m²). Additionally, if you enter the total price of the property or room, the tool automatically calculates the cost per square meter, an essential indicator for assessing the value of the space.
The operation is simple: the area is obtained by multiplying the length by the width (both in meters), following the basic geometry formula. Then, the cost per m² is calculated by dividing the total price by the area found. This allows you to objectively compare different properties or rooms, aiding in purchase, rental, or renovation decisions. The calculator is useful for real estate agents, buyers, tenants, and construction professionals.
You can use this calculator in various everyday situations: when visiting an apartment to rent, when planning a room renovation, or when comparing the value of different plots of land. For example, if a property is 10 meters long by 8 meters wide, the area is 80 m². If the total price is R$ 240,000, the cost per m² will be R$ 3,000. This information helps verify if the price is within the regional average.
Important precautions: make sure to measure length and width correctly using a tape measure, and keep units in meters. The calculator only considers rectangular shapes; for irregularly shaped rooms, you need to divide them into rectangular parts and sum the areas. Also, remember that the cost per m² may vary depending on location, finishes, and property infrastructure, and should not be the sole evaluation criterion.
Frequently asked questions
How to correctly measure the length and width of a room?
Use a tape measure to measure from wall to wall, ignoring baseboards or protrusions. Record the values in meters; if needed, convert centimeters to meters by dividing by 100.
Does the calculator work for irregularly shaped rooms?
No, it is designed only for rectangular shapes. For irregular rooms, divide the space into smaller rectangles, calculate each area, and sum the results.
What does cost per square meter mean and how to interpret it?
Cost per m² is the total price divided by the area. It indicates how much you pay for each square meter of the property. Higher values may reflect prime location or better finishes.
Can I use this calculator for land plots or outdoor areas?
Yes, as long as the plot is rectangular. Just enter the length and width measurements. The cost per m² calculation also applies if you provide the total price of the land.
What precautions should I take when using the result to compare properties?
Remember that cost per m² varies with location, infrastructure, and condition. Use the result as one criterion, but not the only one. Always check the actual property conditions.