Area Calculator
Calculate the area of common 2D shapes: rectangle, square, circle, triangle, trapezoid, and ellipse. Also shows perimeter where applicable. Useful for construction, landscaping, flooring, and geometry homework.
Area Calculator
50.0000 units²
Area
30.0000 units
Perimeter
How to Use Area Calculator
- 1Select the shape
- 2Enter the required dimensions
- 3View area instantly
- 4Also shows perimeter
Your Privacy is Protected
Area Calculator runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
No server uploadNo account required100% freeWorks on all devices
Frequently Asked Questions
How do I calculate the area of a circle?
Area = π × r² where r is the radius. For example, a circle with radius 5 has area = π × 25 ≈ 78.54 square units.
Why Use This Tool?
Files never leave your device
No upload to any server
Instant processing in browser
100% free, no account needed
Tags
area calculatorrectangle areacircle areatriangle areashape calculator
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