A perfect square is a number that is the result of multiplying an integer by itself.

In other words, it is the square of an integer. For example:

• 9 is a perfect square because 3 × 3 = 9.
• 16 is a perfect square because 4 × 4 = 16.
• -25 is not a perfect square because no integer multiplied by itself results in a negative number.

The number 10 is not a perfect square because there is no integer that can be multiplied by itself to equal 10.

Disclaimer: This calculator is for educational purposes only. Please verify all results for critical applications.