Convert matrix to 3-column table (‘reverse pivot’, ‘unpivot’, ‘flatten’, ‘normalize’)

To “reverse pivot”, “unpivot” or “flatten”:

  1. For Excel 2003: Activate any cell in your summary table and choose Data – PivotTable and PivotChart Report:

    SO20541905 first example

For later versions access the Wizard with Alt+D, P.

For Excel for Mac 2011, it’s +Alt+P (See here).

  1. Select Multiple consolidation ranges and click Next.

    SO20541905 second example

  2. In “Step 2a of 3”, choose I will create the page fields and click Next.

    SO20541905 third example

  3. In “Step 2b of 3” specify your summary table range in the Range field (A1:E5 for the sample data) and click Add, then Next.

    SO20541905 fourth example

  4. In “Step 3 of 3”, select a location for the pivot table (the existing sheet should serve, as the PT is only required temporarily):

    SO20541905 fifth example

  5. Click Finish to create the pivot table:

    SO20541905 sixth example

  6. Drill down (ie double-click) on the intersect of the Grand Totals (here Cell V7 or 7):

    SO20541905 seventh example

  7. The PT may now be deleted.

  8. The resulting Table may be converted to a conventional array of cells by selecting Table in the Quick Menu (right-click in the Table) and Convert to Range.

There is a video on the same subject at Launch Excel which I consider excellent quality.

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