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.

Live readers, last 5 h 0Total visitors 4,128

Open this tool in a new tab

πŸ“€ DOWNLOAD THE TOOL


🟦 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 πŸŽ‰.
Runs completely offline and works on any device with a browser.


✨ Features

  • βž• Supports 6 Known Shapes:
  • 🟦 Square β†’ A = xΒ²
  • ⬛ Rectangle β†’ A = b Γ— h
  • πŸ”Ί Triangle β†’ A = Β½ Γ— b Γ— h
  • βšͺ Circle β†’ A = Ο€rΒ²
  • ⬑ Trapezoid β†’ A = Β½(a + b) Γ— h
  • β–­ Parallelogram β†’ A = b Γ— h
  • 🎨 Dark/Light Theme Toggle
  • 🌟 Animated Sparkle Effect when results appear
  • πŸ“± Responsive Design – Works smoothly on mobile, tablet, or desktop
  • ⚑ Instant Calculation as you type your values
  • πŸ“¦ No installation required – just open the HTML file

πŸ–ΌοΈ Preview

Screenshot 2025-08-26 113800

πŸš€ How to Use

  1. Open Area Calculator of Known Shapes.html in your browser.
  2. Select the shape you want to calculate (e.g., Square, Circle, etc.).
  3. Enter the required dimensions (side, base, height, radius, etc.).
  4. The tool will:
  • Instantly compute the area
  • Display it with a highlight + sparkle animation ✨

πŸ“„ Example Input

  • Square: Side = 10 β†’ Result = 100
  • Circle: Radius = 5 β†’ Result β‰ˆ 78.54
  • Trapezoid: a = 6, b = 10, h = 4 β†’ Result = 32

⚑ Why Use This Tool?

  • πŸ§‘β€πŸŽ“ Great for students learning geometry
  • πŸ‘· Useful for surveyors/engineers in quick field calculations
  • 🎨 Attractive UI with spark animations and responsive cards
  • 🌐 Works offline, no internet needed

More to read

Tools & Calculators Β· 28 Aug 2025

Number to Words (India)

Type any number and get it written in words the Indian way (lakh, crore). A free browser tool for estimates, bills and…

5,483 visitors

Tools & Calculators Β· 28 Aug 2025

Triangle Sides Calculator

Enter any two sides of a right-angled triangle and get the third. A free offline field calculator for 3-4-5 and custom…

5,336 visitors