Area Calculator

Calculate the area of various geometric shapes with step-by-step solutions

Shape Selection

Select Shape

Select a shape and enter dimensions to calculate area

Square: A = s²
s = side length

Rectangle: A = l × w
l = length, w = width

Triangle: A = ½ × b × h
b = base, h = height

Circle: A = πr²
r = radius

Ellipse: A = πab
a = major axis, b = minor axis

Sector: A = (θ/360°) × πr²
θ = central angle

Parallelogram: A = b × h
b = base, h = height

Trapezoid: A = ½(b₁ + b₂)h
b₁, b₂ = bases, h = height

Rhombus: A = ½(d₁ × d₂)
d₁, d₂ = diagonals