Area Calculator
Quickly find the area and perimeter of the most common 2D shapes. Choose a shape, enter the required dimensions, and get instant results — useful for geometry homework, construction estimates, or everyday measurements.
Frequently Asked Questions
How do I calculate the area of a rectangle?+
Area of a rectangle = Length × Width. For example, a room that is 5 m long and 4 m wide has an area of 20 square metres. The perimeter (total boundary length) is 2 × (Length + Width) = 18 m.
How do I calculate the area of a circle?+
Area of a circle = π × r², where r is the radius (half the diameter). For example, a circle with radius 7 cm has area = 3.14159 × 49 ≈ 153.94 sq cm. The circumference (perimeter) = 2 × π × r.
How do I calculate the area of a triangle?+
Area of a triangle = ½ × base × height, where height is the perpendicular distance from the base to the opposite vertex. For example, a triangle with base 10 m and height 6 m has area = ½ × 10 × 6 = 30 sq m.
How do I convert square metres to square feet?+
1 square metre = 10.764 square feet. Multiply your sq m value by 10.764 to convert. For property measurements in India, 1 square yard = 9 sq ft, and 1 gaj = 1 sq yard = 9 sq ft.