Squares show up when all four sides match—a 8-foot tile patch, a chessboard diagram, a square meter on a site plan. One side length drives both dimensions, so area is side squared. Faster than pretending it is a rectangle and typing the same number twice unless you prefer that habit.
Perimeter is four times the side; area is side times side. Circles and rectangles have their own pages.
Area of a square with side 8 is 64 square units on the defaults—still rechecked because 8+8 is not 64.
Same number twice
If the sketch is really a rectangle with different length and width, use the rectangle page. If you only know the distance around the square, perimeter page first, then side if needed.
Perimeter with side 8 is 32 around the edge. Mixed-unit sites sometimes need 64 square feet in square meters after the area is found.
- Side is one edge, not diagonal across the square.
- Units square with the side unit.
- One field—do not enter area expecting side back.
Quick layout math for puzzles, flooring, and sketches—not irregular polygons.