Area Calculator
Calculate area for common shapes quickly.
How to Do It Manually
Area measures the space inside a 2D shape. Each shape has its own formula.
Square: s² | Rectangle: l × w | Triangle: ½ × b × h | Circle: π × r² | Trapezoid: ½ × (a + b) × h
Frequently Asked Questions
What units should I use?
Area is always in squared units. If your lengths are in cm, the area is in cm². Use consistent units throughout.
How do I find the area of an irregular shape?
Divide the irregular shape into known shapes (rectangles, triangles), calculate each area, then sum them.