Copilot in Excel

For someone already comfortable with Excel, the most useful starting point is giving Copilot a specific, slightly tedious task rather than asking it to “analyse this spreadsheet.”

A few examples worth trying:

• Drafting formulas: “Match each customer ID to the latest transaction date, and return blank if there’s no match.” Include how you want blanks, duplicates, and errors handled.
• Explaining unfamiliar formulas: Paste a long nested formula and ask it to explain each part or suggest a simpler equivalent. This is especially useful when inheriting someone else’s workbook.
• Exploring data: Ask it to summarise monthly sales by region and highlight the largest changes. That gives you a starting point for deciding what deserves a closer look.

For beginners, explaining why a formula works may be more useful than simply generating it. A prompt like “Explain this formula using one row from my table, and show how to check the answer” turns it into a learning aid.

The main habit to keep is checking the result against a few known examples. A formula can look convincing and still handle dates or duplicates incorrectly. Copilot is useful for getting to a first draft faster; your Excel knowledge helps you decide whether that draft is right.