Area Calculator
Calculate the area of rectangles, squares, triangles, circles, parallelograms, trapezoids, ellipses, and regular polygons.
Select shape
Visualization
Area of Rectangle
50.00
square units
Perimeter
0,00
Formula
A = l × w
All formulas
RectangleA = l × w
SquareA = s²
TriangleA = ½bh
CircleA = πr²
TrapezoidA = ½(b₁+b₂)h
EllipseA = πab
What is area?
Area is the measure of the surface contained within the boundaries of a two-dimensional figure. It is expressed in square units (m², cm², etc.).
Units of area
Common conversions: 1 m² = 10,000 cm², 1 km² = 1,000,000 m², 1 hectare = 10,000 m², 1 acre ≈ 4,047 m².
Applications
Area calculation is essential in construction, surveying, design, painting, gardening, and any field requiring surface measurement.