Area Calculator

Calculate the area of basic geometric shapes instantly. Choose a shape and enter the dimensions.

Instant result Runs in browser
Area
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Area
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Area
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Area
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Formulas

A = w × h
Rectangle
A = (b × h) / 2
Triangle
A = π × r²
Circle
A = (a + b) / 2 × h
Trapezoid

How to use?

  1. 1
    Select a shapeChoose the geometric shape you want to calculate.
  2. 2
    Enter dimensionsType the width, height, radius etc. into the fields.
  3. 3
    Read the resultThe area is displayed instantly. Use Copy to save to clipboard.

FAQ

What unit is the result in?
The unit depends on what you enter. If you enter centimetres, the result is in cm². If metres, then m².
How is the area of a circle calculated?
Area = π × r². Enter the radius and the tool calculates it using π ≈ 3.14159.
What is the difference between area and perimeter?
Area is the surface inside a shape (cm², m²). Perimeter is the total length of the edges (cm, m).

How to Calculate Area?

Area is the amount of two-dimensional space enclosed within a shape. It is measured in square units such as cm², m², or km².

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