Convert area measurements across metric and imperial systems. Select your units from the dropdowns, or use the Quick Conversion Shortcuts to jump directly to standard pairs.
Key Features of Area Calculator
- Shape Selection Pick square, circle, triangle, or rectangle for fast geometry calculation.
- Multiple Unit Readouts Output results in square meters, square feet, square yards, and more.
- Live Canvas Visualization Visual rendering of shapes updating in real-time as dimensions change.
Area Calculator Examples
Area of a Rectangle
Find the area of a room measuring 12 feet by 15 feet.
Input
Rectangle: Width = 12, Length = 15Output
Area: 180 sq ftArea of a Circle
Find the area of a circular patio with a radius of 5 meters.
Input
Circle: Radius = 5Output
Area: 78.54 sq m. Formula: pi * r^2How to Use Area Calculator
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1. Enter a Value
Type the area value you want to convert into the input field.
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2. Select Source and Target Units
Choose your source unit (e.g. sq ft, acres, sq meters) and the target unit from the dropdowns.
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3. View the Result
The converted area and the formula used are shown below the inputs.
Common Use Cases for Area Calculator
- Flooring Plans Calculate total square footage needed for tile, wood, or carpet installations.
- Garden Scaling Determine soil or turf coverage requirements for outdoor projects.
- Construction Layouts Verify spatial dimensions and blueprints against geometric formulas.
The Technical Details
Uses standard geometric area formulas compiled in standard browser double-precision floats.
Frequently Asked Questions
How many square feet are in an acre?
1 acre equals exactly 43,560 square feet.
What is the difference between a hectare and an acre?
1 hectare equals 2.471 acres, or approximately 10,000 square meters. Hectares are used in the metric system while acres are common in the US and UK.
Can I convert between metric and imperial area units?
Yes. The tool supports conversions between square meters, square feet, acres, hectares, square kilometers, and square miles in any direction.
Is my data sent to a server?
No. All conversions run in your browser using client-side JavaScript; nothing is ever uploaded or stored.