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Magic Square Calculator

Check or generate magic squares, calculate the magic constant, and verify row, column, diagonal, and sequence conditions.

Last Updated: May 2026

Magic constant

15

Status

Magic square

Distinct values

9 / 9

Sequence check

Matches expected sequence

Magic Square Inputs

Enter the order and grid values. Use the generator for odd orders or orders divisible by 4.

Constant and Sequence

StepCalculationResult
Magic constant3 / 2 x [2 x 1 + 1 x (3^2 - 1)]15
OrderRows and columns per side3
Expected values3 x 39
Value sequenceStart 1, step 1Complete

Generated Square

RowValuesStatus
Generated row 18 1 6Matches
Generated row 23 5 7Matches
Generated row 34 9 2Matches

Row, Column, and Diagonal Sums

LineValuesSum
Row 18 + 1 + 615
Row 23 + 5 + 715
Row 34 + 9 + 215
Column 18 + 3 + 415
Column 21 + 5 + 915
Column 36 + 7 + 215
Main diagonal8 + 5 + 215
Other diagonal6 + 5 + 415

Math Puzzle Notice

This calculator focuses on additive magic squares. Generation supports odd orders and doubly-even orders. Singly-even orders such as 6, 10, and 14 require a different construction method and are checked when pasted, but not generated here.

Reviewed For Methodology, Labels, And Sources

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Reviewed By

Jitendra Kumar, Founder & Editorial Standards Lead, oversees methodology standards and trust-sensitive publishing decisions.

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Topic Ownership

Sales tax and tax-sensitive estimate tools, Education and GPA planning calculators, Health, protein, and screening-formula pages, Platform-wide publishing standards and methodology

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Methodology & Updates

Page updated May 2026. Trust-critical pages are reviewed when official rates or rules change. Evergreen calculator guides are checked on a recurring quarterly or annual cycle depending on topic volatility.

How to Use the Magic Square Calculator

Enter the order of the square, such as 3 for a 3 x 3 grid. Then paste the grid values row by row, separated by spaces, commas, semicolons, or line breaks.

Use sequence start and step to calculate the expected magic constant for normal or arithmetic-sequence magic squares. Press Generate to fill supported odd or doubly-even orders automatically.

  1. Step 1: Set the order

    Enter the number of cells on each side of the square.

  2. Step 2: Enter the sequence

    Use start 1 and step 1 for normal magic squares, or adjust them for a custom arithmetic sequence.

  3. Step 3: Paste or generate the grid

    Enter n squared values manually, or use the generator for supported orders.

  4. Step 4: Review the sums

    Check the magic constant, row sums, column sums, diagonals, and sequence coverage.

How This Magic Square Calculator Works

A normal magic square of order n uses the numbers 1 through n squared exactly once. The expected sum of every row, column, and main diagonal is n(n squared + 1) divided by 2.

The calculator also supports arithmetic sequences. If the first value is a and the common difference is d, the magic constant is n / 2 x [2a + d(n squared - 1)].

After calculating the expected constant, the calculator sums every row, every column, and both main diagonals. If all of them match, the square is magic. If only rows and columns match, it is semimagic.

Magic Square Guide

Core Formulas

ConceptFormulaUse
Normal magic constantn(n^2 + 1) / 2Used when the square contains 1 through n^2.
Arithmetic sequence constantn / 2 x [2a + d(n^2 - 1)]Used when values start at a and increase by step d.
Magic square testRows = columns = both main diagonalsAll must equal the magic constant.
Semimagic testRows = columns onlyDiagonals do not both match.

Common Constants

SquareSetupResult
3 x 3 normaln = 3Magic constant 15
4 x 4 normaln = 4Magic constant 34
5 x 5 normaln = 5Magic constant 65
3 x 3 start 10, step 2n / 2 x [2a + d(n^2 - 1)]Magic constant 54

Magic Square Context

Magic squares are studied as recreational mathematics and number theory objects. The classic 3 x 3 Lo Shu square is the smallest nontrivial normal magic square.

A grid can have matching row and column sums without being fully magic. The diagonal checks are what separate a full magic square from a semimagic square.

Keep the research moving with Matrix Calculator, Modulo Calculator, Numbers Converter, and Mean Calculator.

Frequently Asked Questions

A magic square is a square grid of numbers where every row, every column, and both main diagonals add to the same sum, called the magic constant.

For a normal n by n magic square using 1 through n squared, the magic constant is n(n squared + 1) divided by 2.

A normal magic square uses each integer from 1 through n squared exactly once.

Yes. It can generate odd-order magic squares and doubly-even magic squares, where the order is divisible by 4.

A normal 2 by 2 magic square does not exist. The smallest nontrivial normal magic square is order 3.

A semimagic square has matching row and column sums, but one or both main diagonals do not match the magic constant.

Related Calculators

Sources & References

  1. 1.Wolfram MathWorld - Magic Square(Accessed May 2026)
  2. 2.Wolfram MathWorld - Magic Constant(Accessed May 2026)
  3. 3.Encyclopaedia Britannica - Magic Square(Accessed May 2026)