Area Calculator

Area Calculator — Rectangle, Triangle, Circle

Calculate the area of common geometric shapes instantly. Select a shape, enter dimensions, and get results with formulas displayed.

Supported Shapes and Formulas

• Rectangle: Area = Length × Width. Used for rooms, floors, walls, and land plots.
• Triangle: Area = 1/2 × Base × Height. Used for roof pitches, triangular lots, and structural elements.
• Circle: Area = π × Radius². Used for round tables, pools, pipes, and circular gardens.

How to Use

1. Select a shape from the dropdown
2. Enter the required dimensions in any unit
3. Click Calculate to see the result

Practical Applications

• Home renovation: Calculate flooring or paint needed
• Landscaping: Determine sod or gravel quantities
• Construction: Estimate material requirements
• Education: Verify homework geometry problems

Results display in square units — use consistent units for accurate measurements.