Excel Power Query: What It Is and When to Use It

What Power Query is

Power Query is a data transformation tool built into Excel (Data → Get & Transform Data). It lets you connect to data sources, clean and reshape the data, and load it into a table — all without writing formulas. Every step is recorded and can be replayed automatically when data refreshes.

When to use Power Query instead of formulas

You get a new data file every week and need to clean it the same way each time
You need to combine data from multiple files or sheets
Your dataset has hundreds of thousands of rows (formulas get slow, Power Query stays fast)
You need to unpivot data (turn columns into rows or vice versa)
You need to split one table into multiple outputs

Getting started

Data → Get Data → From File → From Excel Workbook

Or From Text/CSV, From Web, From SharePoint — Power Query connects to almost anything.

The Power Query Editor opens

You see a preview of your data. Every transformation you make appears in the "Applied Steps" panel on the right.

Clean the data using the ribbon

Remove columns, filter rows, change data types, split columns, merge tables — all from the ribbon, no code needed.

Home → Close & Load

Loads the cleaned data into a Table in Excel. Next time you get new data, click Data → Refresh All and every step runs again automatically.

💡 The biggest Power Query benefit

The transformation is recorded, not hardcoded. When your boss sends you next month's data file, you replace the source file and click Refresh — the same 20 cleaning steps run in seconds. No manual reformatting.

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Excel Power Querywhat it is and when to use it

What Power Query is

When to use Power Query instead of formulas

Getting started

Practice what you just learned

Excel Power Query
what it is and when to use it