Area Calculator
Calculate the area of a rectangle, circle, triangle or trapezoid.
From flooring estimates to garden planning, calculating area for basic shapes — rectangles, circles, triangles, and trapezoids — covers the vast majority of everyday area questions.
Choosing the right shape for irregular spaces
For an irregular room, break it down into simpler shapes, calculate each area separately, then add them together — this calculator handles one shape at a time, so combine multiple calculations for complex layouts.
Frequently asked questions
How do I calculate area for an L-shaped room?
Split it into two rectangles, calculate each separately, then add the results together.
What unit will my answer be in?
Area is always in square units matching whatever unit you entered your dimensions in.