Area Calculator
Calculate the area of various geometric shapes including rectangles, circles, triangles, and more.
Published by:
isCalculator Editorial Team
Reviewed by:
Review Board
Last Updated:
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How to use this tool?
How to Use the Area Calculator
- Select a shape from the dropdown (Rectangle, Circle, Triangle, or Square).
- Enter the required dimensions in the input fields that appear:
- Rectangle: Length and Width
- Circle: Radius
- Triangle: Base and Height
- Square: Side length
- All values must be positive numbers (decimals allowed). No specific unit (metric/imperial) is required—just use consistent units.
- Click "Calculate Area" to see the result and the formula used.
- The area is displayed in square units (e.g., if you enter meters, the result is in square meters).
Previous Results
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Frequently Asked Questions
It supports rectangles, circles, triangles, and squares.
Yes, you can enter decimal numbers as inputs.
The calculator uses generic units; the result is in square units matching the input units.
