Tools & Calculators Β· Β· 1 min read
Area Calculator of Known Shapes
Free browser tool to calculate the area of common shapes: square, rectangle, triangle, circle, trapezoid and parallelogram. Works offline on any device.
π¦ Area Calculator of Known Shapes
A fun and interactive browser-based tool to calculate the area of common 2D shapes such as:
Square, Rectangle, Triangle, Circle, Trapezoid, and Parallelogram π.
Runs completely offline and works on any device with a browser.
β¨ Features
- β Supports 6 Known Shapes:
- π¦ Square β A = xΒ²
- β¬ Rectangle β A = b Γ h
- πΊ Triangle β A = Β½ Γ b Γ h
- βͺ Circle β A = ΟrΒ²
- ⬑ Trapezoid β A = Β½(a + b) Γ h
- β Parallelogram β A = b Γ h
- π¨ Dark/Light Theme Toggle
- π Animated Sparkle Effect when results appear
- π± Responsive Design β Works smoothly on mobile, tablet, or desktop
- β‘ Instant Calculation as you type your values
- π¦ No installation required β just open the HTML file
πΌοΈ Preview

π How to Use
- Open
Area Calculator of Known Shapes.htmlin your browser. - Select the shape you want to calculate (e.g., Square, Circle, etc.).
- Enter the required dimensions (side, base, height, radius, etc.).
- The tool will:
- Instantly compute the area
- Display it with a highlight + sparkle animation β¨
π Example Input
- Square: Side = 10 β Result = 100
- Circle: Radius = 5 β Result β 78.54
- Trapezoid: a = 6, b = 10, h = 4 β Result = 32
β‘ Why Use This Tool?
- π§βπ Great for students learning geometry
- π· Useful for surveyors/engineers in quick field calculations
- π¨ Attractive UI with spark animations and responsive cards
- π Works offline, no internet needed



