How to Use Our Area Calculator

2 min read

How to Use Our Area Calculator

From flooring projects to garden beds, knowing the area of a space is a fundamental calculation. Our Area Calculator handles all common shapes.

Supported Shapes

Rectangle

Enter length and width. Area = length x width.

Circle

Enter the radius (half the diameter). Area = pi x radius squared. A circle with a 5-foot radius has an area of about 78.5 square feet.

Triangle

Enter the base and height. Area = (base x height) / 2. The height must be perpendicular to the base.

Trapezoid

Enter both parallel sides (top and bottom) and the height. Area = (top + bottom) / 2 x height.

Practical Applications

• Flooring and carpet: Calculate the area of each room to order the right amount of material (add 10% for waste).
• Landscaping: Determine how much sod, mulch, or gravel to order.
• Painting: Calculate wall areas to buy the right amount of paint.
• Garden planning: Size garden beds and estimate soil needs.

Working with Irregular Shapes

Break complex shapes into simpler ones. An L-shaped room is two rectangles. A room with a bay window is a rectangle plus a triangle or trapezoid. Calculate each part and add them together.

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