Area Calculator
Calculate the area of 7 common 2D shapes: rectangle, triangle, trapezoid, circle, sector, ellipse, and parallelogram.
Area Calculator
Calculate the area of 7 common 2D shapes
Description
A quadrilateral with four right angles
units
units
Formula
Area = length × width
What is Area?
Area is a quantity that describes the size or extent of a two-dimensional figure or shape in a plane. It can be visualized as the amount of paint necessary to cover a surface.
When to Use?
Area calculators are essential for understanding land measurements, construction planning, interior design, landscaping, and any application requiring surface calculations.
Applications
- • Estimating land area for real estate and property assessment
- • Planning construction materials (paint, flooring, roofing)
- • Landscaping and garden planning
- • Interior design and space planning
- • Agricultural land measurement
- • Urban planning and city development
- • Calculating shipping and storage space
Key Points
- • Rectangle: Simple multiplication of length and width
- • Triangle: Heron's formula works for any triangle given three sides
- • Circle: Always involves π and the square of the radius
- • Sector: A proportional slice of a circle based on angle
- • Ellipse: Extension of circle formula using two different radii
- • Trapezoid: Average of two bases multiplied by height
- • Parallelogram: Base times perpendicular height
Units
Common area units include square meters (m²), square feet (ft²), square kilometers (km²), acres, and hectares. 1 meter = 3.28084 feet
History
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