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Regular Polygon Area Calculator — Any Number of Sides

Regular Polygon Area Calculator: Calculate the area of any regular polygon — pentagon, hexagon, octagon, and beyond — from the number of sides

Poligono Regolare

Fattore di scarto materialeOPZIONALE

Stima del costo del materialeOPZIONALE

Calculation Results

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1 ft (12 in) 1 ft 1 ft² = 144 in²

Regular Polygon Area Calculator

Select the Regular Polygon shape, enter the number of sides (3 or more) and the length of one side, then click Calculate. The calculator applies the formula Area = (n × s²) / (4 × tan(π/n)) to instantly find the area of any regular polygon — triangles, pentagons, hexagons, octagons, and beyond — in square feet, square yards, square meters, and acres.

If you already know the polygon area from a deed or survey, switch to the Known Area shape to convert it between area units instead. For an irregular polygon with unequal sides, break it into rectangles and triangles, calculate each section, and add the results.

Come funziona

1

Seleziona Forma

Choose the shape that matches your space.

2

Inserisci le dimensioni

Immettere le misurazioni in qualsiasi unità. Aggiungi quantità, fattore di scarto e prezzo del materiale.

3

Ottieni risultati

Visualizza l'area in ft², in², yd², m², acri più stima dei costi, tutto in una volta.

Domande frequenti

Select the Regular Polygon shape, enter the number of sides (3 or more) and the length of one side, then click Calculate. The tool applies the formula Area = (n × s²) / (4 × tan(π/n)) automatically for pentagons, hexagons, octagons, and any other regular polygon.
Yes. Enter 5 for a pentagon or 6 for a hexagon in the Number of Sides field, enter the side length, and click Calculate. The same Regular Polygon calculator handles any number of equal sides, 3 and up.
Switch to the Known Area shape if you already know the area, or break the irregular polygon into rectangles and triangles, calculate each section with this calculator, and add the results together.
If you know the overall area in acres or square meters from a deed or survey, use the Known Area option to convert to square feet. Otherwise, divide the lot into measurable geometric shapes, calculate each, and add them up.
A tape measure or laser distance meter for indoor spaces. For outdoor lots, use a measuring wheel, GPS surveying app, or satellite images with a scale tool. For the most accurate results, hire a professional surveyor.
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