Area of a Rectangle Calculator

Free online Area of a Rectangle calculator — convert units, see steps, download results and view a live pie chart. No signup, no API, 100% client-side.

Select length unit
Select width unit
Choose result unit
Result accuracy

📊 Rectangle Visualization

ℹ️ About the Rectangle Area Calculator

Area = Length × Width

The area of a rectangle is calculated by multiplying its length by its width. Enter your measurements in any supported units, and the calculator will automatically convert and compute the area with your chosen precision.

❓ Frequently Asked Questions

How do I enter measurements correctly?
Enter the numerical value in the input field and select the appropriate unit from the dropdown. You can use different units for length and width – the calculator handles conversions automatically.
What units are supported?
We support meters, centimeters, millimeters, kilometers, inches, feet, and yards for both input and output. Area results are shown in square units.
Can I use decimal values?
Yes! You can enter decimal values like 2.5 or 3.75. Use the precision selector to control how many decimal places are shown in the results.