Perfect Square Calculator

Enter a whole number to test it exactly, see its integer square root, and compare the nearest lower and higher perfect squares.

Non-negative whole number

Quick examples

—Perfect-square check

—Integer square root

—Nearest lower square

—Nearest higher square

—Distance to nearest

How to use this Perfect Square Calculator

Enter a whole number to test it exactly, see its integer square root, and compare the nearest lower and higher perfect squares.

What it calculates

Check whether a non-negative whole number is a perfect square and find the nearest perfect squares.

Browser limits

Exact integer radical factorization is capped at 1 trillion for responsive local processing. The long-division page supports up to 60 integer digits and 12 generated decimal places.