Use our free online rectangle calculator to instantly determine the area, perimeter, and diagonal of a rectangle by entering its length and width. Whether you're working on a math problem or a real-life project like home improvement or construction, this tool makes calculations fast and accurate.
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FAQs
How does the Rectangle Calculator work?
This calculator uses standard geometric formulas:
- Area: Length × Width
- Perimeter: 2 × (Length + Width)
- Diagonal: √(Length² + Width²)
Just enter the length and width of the rectangle, and the tool will compute all three values in real time.
Why use a Rectangle Calculator?
Calculating manually can lead to errors, especially when dealing with decimals or large numbers. This tool ensures accuracy and saves time, making it ideal for students, architects, designers, and professionals who frequently work with rectangular shapes.
What units can I use?
You can input measurements in inches, feet, meters, centimeters, or any other unit of length. The result will be displayed in the corresponding squared unit (for area) or linear unit (for perimeter/diagonal).
ust enter the length and width of the rectangle, and the tool will compute all three values in real time.
Why use a Rectangle Calculator?
Calculating manually can lead to errors, especially when dealing with decimals or large numbers. This tool ensures accuracy and saves time, making it ideal for students, architects, designers, and professionals who frequently work with rectangular shapes.
What units can I use?
You can input measurements in inches, feet, meters, centimeters, or any other unit of length. The result will be displayed in the corresponding squared unit (for area) or linear unit (for perimeter/diagonal).