Convert a Text Column to Number in Power Query M

Converts a text column containing numeric values into a proper Number type.

Data TypesBeginnertextnumberconverttypes

Power Query M code

let
    Source = YourTable,
    ChangedType = Table.TransformColumnTypes(Source, {{"ColumnName", type number}})
in
    ChangedType

Notes

If the text uses a different decimal separator, pass a locale as the third argument, e.g. Table.TransformColumnTypes(Source, {{"ColumnName", type number}}, "en-US").

Requirements

How to use this snippet

  1. In Power BI Desktop, choose Transform data to open Power Query, then open the Advanced Editor on a query (or start from a blank query).
  2. Paste the snippet and replace the placeholder names (tables, columns, file paths) with your own. Check the requirements above first.
  3. Run it through the Power Query M Formatter to tidy the layout.

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