Area calculator
Calculate the area of common 2D shapes with step-by-step formulas.
This tool processes all data locally on your device.
Input
Output
Formula
A = width × height
Readme
Tool description
The Area Calculator helps you compute the surface of common 2D shapes using guided formulas and instant feedback on input validity.
Features
- Supports rectangle, square, circle, triangle, trapezoid, and ellipse calculations
- Dynamic input form that adjusts to the selected shape
- Automatic formula evaluation with numerical substitution preview
Supported Shapes
- Rectangle - width × height
- Square - side²
- Circle - π × radius²
- Triangle - ½ × base × height
- Trapezoid - ½ × (base a + base b) × height
- Ellipse - π × semi-major axis × semi-minor axis
Tool info
Created
Last updated
Tags
areageometrycalculatormathsurface
Similar Tools
Calculate the arithmetic mean of a list of numbers.
Find the median (middle value) from a list of numbers.
Calculate probabilities for single events.
Share
Embed
Embed this tool anywhere for free. Need help? Check out our guide.
337 characters
Disclaimer
The tools provided on this website are designed to assist users in solving various problems. While we strive to ensure that the tools are accurate and effective, we do not guarantee or warrant that the output of any tool will be 100% accurate or error-free. The results generated by these tools are provided as-is and should be used with caution. We recommend that users verify any important information or results with additional resources or professional advice, as we cannot be held responsible for any consequences arising from the use of these tools. By using this website, you agree to assume all risks associated with the accuracy and use of the results provided.