Perfect Square Checker

Welcome to the Perfect Square Checker, where you can easily verify if a number is a perfect square.

A square number, also called a perfect square, is an integer represented as a product of two identical integers. Square numbers can also be called a type of figurative number because the square of n can be represented as a square figure formed by arranging n points on each side. Square numbers of a negative integer are also positive. Expressed by the formula:

S = n * n = n²

where n is an integer.

For example, 16 = 4 * 4, so 16 is a perfect square.

To check whether a number is a perfect square, just judge whether its square root is an integer. If the square root is an integer, then it is a perfect square, otherwise it is not a perfect square.

First 100 perfect squares

• 0 = 0 * 0
• 1 = 1 * 1
• 4 = 2 * 2
• 9 = 3 * 3
• 16 = 4 * 4
• 25 = 5 * 5
• 36 = 6 * 6
• 49 = 7 * 7
• 64 = 8 * 8
• 81 = 9 * 9
• 100 = 10 * 10
• 121 = 11 * 11
• 144 = 12 * 12
• 169 = 13 * 13
• 196 = 14 * 14
• 225 = 15 * 15
• 256 = 16 * 16
• 289 = 17 * 17
• 324 = 18 * 18
• 361 = 19 * 19
• 400 = 20 * 20
• 441 = 21 * 21
• 484 = 22 * 22
• 529 = 23 * 23
• 576 = 24 * 24
• 625 = 25 * 25
• 676 = 26 * 26
• 729 = 27 * 27
• 784 = 28 * 28
• 841 = 29 * 29
• 900 = 30 * 30
• 961 = 31 * 31
• 1024 = 32 * 32
• 1089 = 33 * 33
• 1156 = 34 * 34
• 1225 = 35 * 35
• 1296 = 36 * 36
• 1369 = 37 * 37
• 1444 = 38 * 38
• 1521 = 39 * 39
• 1600 = 40 * 40
• 1681 = 41 * 41
• 1764 = 42 * 42
• 1849 = 43 * 43
• 1936 = 44 * 44
• 2025 = 45 * 45
• 2116 = 46 * 46
• 2209 = 47 * 47
• 2304 = 48 * 48
• 2401 = 49 * 49
• 2500 = 50 * 50
• 2601 = 51 * 51
• 2704 = 52 * 52
• 2809 = 53 * 53
• 2916 = 54 * 54
• 3025 = 55 * 55
• 3136 = 56 * 56
• 3249 = 57 * 57
• 3364 = 58 * 58
• 3481 = 59 * 59
• 3600 = 60 * 60
• 3721 = 61 * 61
• 3844 = 62 * 62
• 3969 = 63 * 63
• 4096 = 64 * 64
• 4225 = 65 * 65
• 4356 = 66 * 66
• 4489 = 67 * 67
• 4624 = 68 * 68
• 4761 = 69 * 69
• 4900 = 70 * 70
• 5041 = 71 * 71
• 5184 = 72 * 72
• 5329 = 73 * 73
• 5476 = 74 * 74
• 5625 = 75 * 75
• 5776 = 76 * 76
• 5929 = 77 * 77
• 6084 = 78 * 78
• 6241 = 79 * 79
• 6400 = 80 * 80
• 6561 = 81 * 81
• 6724 = 82 * 82
• 6889 = 83 * 83
• 7056 = 84 * 84
• 7225 = 85 * 85
• 7396 = 86 * 86
• 7569 = 87 * 87
• 7744 = 88 * 88
• 7921 = 89 * 89
• 8100 = 90 * 90
• 8281 = 91 * 91
• 8464 = 92 * 92
• 8649 = 93 * 93
• 8836 = 94 * 94
• 9025 = 95 * 95
• 9216 = 96 * 96
• 9409 = 97 * 97
• 9604 = 98 * 98
• 9801 = 99 * 99

The procedure to use the perfect square checker is as follows: