Area Calculator
Calculate the area of common geometric shapes instantly. Select a shape, enter the dimensions, and see the result with the formula used.
Formula: Area = length × width
Formula: Area = side²
Formula: Area = ½ × base × height
Formula: Area = π × radius²
Formula: Area = ½ × (base1 + base2) × height
Area
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Why use this tool?
Calculating the area of geometric shapes is a common task in math, engineering, and design. This tool provides instant area calculations for the most common shapes with clear formulas displayed.
- Multiple shapes — support for rectangle, square, triangle, circle, and trapezoid.
- Formula display — see the exact formula used for each calculation.
- Real-time results — area updates as you type.
- Privacy — all calculations happen in your browser. No data is sent to any server.
How to use
- Select the shape you want to calculate from the dropdown.
- Enter the required dimensions in the input fields.
- The area will be calculated automatically and displayed below.
- Review the formula shown to understand the calculation.
Frequently Asked Questions
Yes, the MushTools Area Calculator is completely free with no sign-up required. All calculations happen in your browser.
This tool supports rectangles, squares, triangles, circles, and trapezoids.
No. Everything runs client-side in your browser. Your inputs never leave your device.