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Plot area calculator
Enter the shape and dimensions of your plot and the calculator will return its area in square metres, ares and hectares. Supported shapes: rectangle (a × b), triangle (base × height / 2) and circle (π × r²). For irregular plots, split them into simpler shapes and sum the results.
Na tej stronie
How we calculate plot area
Rectangle: P = a × b — multiply length by width. Triangle: P = (base × height) / 2 — the height must be perpendicular to the base. Circle: P = π × r² — r is the radius (half the diameter). The result in m² is divided by 100 to get ares and by 10 000 to get hectares. Values are rounded to two decimal places. For param2 in circle mode, only param1 (radius) is used.
Example: rectangular plot 20 m × 30 m
A plot with sides of 20 m and 30 m has an area of 600 m² (6 ares / 0.06 ha). This is a typical suburban building plot. A triangular plot with the same base and height gives 300 m² (3 ares), and a circular plot with radius 10 m gives about 314 m² (3.14 ares).
Frequently asked questions
What is an are and how many square metres does it contain?
An are (symbol: a) equals 100 m². A 6-are plot therefore measures 600 m². The are is a convenient unit for describing residential and agricultural plots in many European countries.
How many m² are in a hectare?
One hectare (ha) equals 10 000 m² (100 ares). Hectares are mainly used in agriculture, forestry and large real-estate descriptions. For a typical building plot, ares are more practical.
How do I calculate the area of a rectangular plot?
Multiply length by width: P = a × b. For a 20 m × 30 m plot the result is 600 m² (6 ares). Make sure both dimensions are in the same unit — the calculator uses metres.
How do I calculate the area of a triangular plot?
Use P = (base × height) / 2. The height must be perpendicular to the base. For a triangle with base 20 m and height 30 m the result is 300 m² (3 ares). For a right-angled triangle you can use the two legs as base and height.
How do I calculate the area of a circular plot?
Use P = π × r², where r is the radius (half the diameter). For radius 10 m the result is about 314.16 m² (3.14 ares). Enter only the radius in the param1 field; param2 is ignored for circles.
What should I do for an irregularly shaped plot?
Divide the plot into simpler shapes — rectangles, triangles or trapezoids — calculate each area separately and sum the results. For complex polygons, use GIS tools like Google Earth or consult a licensed surveyor.
How do I convert m² to ares and hectares?
Divide m² by 100 to get ares and by 10 000 to get hectares. Example: 2500 m² = 25 ares = 0.25 ha. The calculator displays all three units simultaneously.
Can I use this calculator to value a plot?
The calculator computes area only — it does not value property. Plot prices depend on location, zoning, access to utilities, shape and market conditions. For valuation, consult a certified property appraiser.
Where can I find the official dimensions of my plot?
Official dimensions are available from the land register (starostwo powiatowe in Poland) or the land and mortgage register. You can also view plot boundaries on geoportal.gov.pl. GPS measurements are approximate and not suitable for legal purposes.
What is the minimum plot area for a building permit in Poland?
There is no single national minimum — it depends on the local spatial development plan (MPZP) or, in its absence, on development conditions (WZ). Typical minimums range from 500 m² to 1500 m² depending on the municipality and plot type.
Results are indicative only. For legal, notarial or surveying purposes always use official data from the land register or a surveyor report.
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