Draw any shape — click to add vertices, connect them, set one side's real length and get the area.
| Formula | Description |
|---|---|
| Shoelace (Gauss) formula | Area = ½|Σ(xᵢ·yᵢ₊₁ − xᵢ₊₁·yᵢ)| — works for any simple polygon |
| 1 are (a) | = 100 m² |
| 1 hectare (ha) | = 10,000 m² |
| 1 sq ft (sq ft) | = 0.092903 m² |
| 1 acre (acre) | = 4,046.86 m² |
For irregular plots, split into simple shapes or use cadastral/GPS coordinates.
Click on the canvas — each click adds a corner point. Click the first point to close the shape. Then drag points with your mouse to adjust the shape. Enter the real length of one side — all others recalculate proportionally.
Enter the real length of at least one side in meters (or feet) — press the ⭐ button next to that side. The remaining sides and area are automatically recalculated.
Yes! Simply click all the corners of the L-shape in sequence — the tool calculates the area of any polygon using the Gauss (shoelace) formula.
You can switch between metric (m², ares, hectares), feet (sq ft, acres), and yards (sq yd) using the unit selector. The area and side lengths update instantly.
e-Buhalteris helps you track materials, inventory and project costs.
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