Square Area Calculator
Calculate area, perimeter, and diagonal of a square from its side length.
About this calculator
The Square Area Calculator on NumberCals is a free, mobile-friendly tool for anyone needing to calculate area, perimeter, and diagonal of a square from its side length. Enter your values in the form below and the result is computed instantly — no sign-up, no installation, no waiting.
Formula used
A = s²; P = 4s; d = s√2
What you'll need
- Side Length (e.g. 5)
What you'll get
- Area
- Perimeter
- Diagonal
Formula
A = s²; P = 4s; d = s√2
Result
Frequently Asked Questions
How is a square different from a rectangle? +
A square is a rectangle where all four sides are equal length. Every square is a rectangle, but not every rectangle is a square.
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