Area Calculator
Calculate the area of common 2D shapes.
Rectangle
Circle
Triangle
Trapezoid
Area
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Select shape and enter dimensions
Area Formulas
| Shape | Formula | Example |
|---|---|---|
| Rectangle | A = l x w | l=10, w=5: A=50 |
| Circle | A = pi r^2 | r=7: A=153.94 |
| Triangle | A = (1/2) b h | b=10, h=8: A=40 |
| Square | A = s^2 | s=6: A=36 |
| Trapezoid | A = (1/2)(a+b)h | a=8, b=12, h=5: A=50 |
What is Area?
Area is the amount of two-dimensional space inside a shape. It's measured in square units like square meters (m2), square feet (ft2), or square centimeters (cm2).