Free Online Area Calculator with 3D Visualization
This free online Area Calculator allows you to quickly and accurately calculate the area of rectangles, squares, circles, triangles, trapezoids, parallelograms, and polygons. Enjoy instant results, unit conversions, 3D visualizations, and server-verified accuracy. It supports multiple units of measurement, such as Meters, Yards, Feet, Inches, centimeters, etc. It also displays results in different units of measurement. This area calculator also allows users to copy results or download results in text format. The user also accesses the last 10 calculations and results in the history section. Enjoy this fast, reliable, and safe online Area Calculator app, 100% free and no signup required.
How to Use:
- Select the shape you want to calculate (e.g., Rectangle, Polygon).
- Enter the required dimensions in your preferred units (feet/yards/meters plus inches/cm for precision).
- For polygons, add as many vertices as you need and enter their coordinates.
- Click Calculate to see the area, formula used, and a 3D visual of your shape.
- All results in m², ft², yd², in², and cm² are shown together. Copy or download your result, or view your calculation history.
Example Calculations:
- Rectangle: Length = 10 yd, Width = 5 ft → Area: ... (auto-converted result)
- Circle: Radius = 3 m → Area: 28.274 m²
- Polygon: Vertices: (0,0), (4,0), (4,3), (0,3) → Area: 12 m² (Shoelace formula)
Supported Shapes:
- Rectangle, Square, Triangle, Circle, Trapezoid, Parallelogram, Polygon (multi-vertex, custom coordinates)
Why Use This Calculator?
- Fast, mobile-friendly, and accurate
- 3D visual of your shape (powered by Three.js)
- Server-side calculation API ensures precision
- Calculation history, export/copy, and accessibility features included