Math

Magic Square Calculator

Find the magic constant of an n×n magic square.

Calculated Output

Magic constant 15

Sum of all cells 45

Formula: M = n(n² + 1) ÷ 2

Step-by-Step Breakdown

1. Values used:

2. Square size (n) = 3

4. Magic constant = 15

5. Sum of all cells = 45

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The math behind it

The magic constant is M = n(n² + 1)/2. The grand total of all cells is n² (n² + 1)/2.

A 3×3 magic square has constant 3(9 + 1)/2 = 15.

Do all sizes have magic squares?

Yes for every n ≥ 3 (and trivially n = 1); only n = 2 is impossible.