Area Calculator

Area

Formula Used

About Area Calculator

Calculating Area

Area measures the amount of two-dimensional space enclosed within a shape's boundaries, expressed in square units (square meters, square feet, square centimeters, etc.). Calculating area is essential in construction (flooring, painting, roofing), landscaping (lawns, gardens), real estate (property size), manufacturing (material usage), and countless other practical applications. Each geometric shape has its own specific formula derived from fundamental mathematical principles.

Common Area Formulas

Rectangle: A = length x width. Triangle: A = 0.5 x base x height. Circle: A = pi x radius^2. Trapezoid: A = 0.5 x (base1 + base2) x height. Parallelogram: A = base x height. Ellipse: A = pi x semi-major x semi-minor. These formulas work regardless of the unit system as long as all measurements use the same unit.

How to Use This Calculator

Select the shape you want to calculate the area of. Enter the required dimensions (different shapes need different measurements). Click Calculate and the result displays the area in your chosen unit along with the formula used. You can switch between metric and imperial units as needed.

Frequently Asked Questions

What units are area measured in?

Area uses square units: square meters (m2), square feet (ft2), square centimeters (cm2), acres, hectares. The unit depends on the scale: cm2 for small objects, m2 for rooms, acres for land.

How do I find area of an irregular shape?

Break it into regular shapes (rectangles, triangles), calculate each area separately, and add them together. Alternatively, use the grid method: overlay a grid and count the squares covered.

What is the difference between area and perimeter?

Area measures the space inside a shape (measured in square units). Perimeter measures the distance around the outside (measured in linear units). They are independent: shapes with the same perimeter can have different areas.