Microsoft Copilot in Excel is one of the most transformative additions to spreadsheets since pivot tables. It lets you analyse data, generate formulas, create charts, and find insights — all by typing natural language prompts.
What Is Copilot in Excel?
Copilot is Microsoft's AI assistant built directly into Excel as part of Microsoft 365. It can:
- Analyse and summarise your data
- Suggest and write formulas
- Create charts and pivot tables
- Highlight trends and outliers
- Sort, filter, and format data
- Answer questions about your spreadsheet
Prerequisites
- Microsoft 365 subscription with the Copilot add-on
- AutoSave enabled — File must be saved to OneDrive or SharePoint
- Data in an Excel Table — Select your data and press
Ctrl+T - Updated Excel — Latest version from Microsoft 365
Step-by-Step: Your First Copilot Session
Step 1: Prepare Your Data
Ensure clear column headers. Select your range and press Ctrl+T to convert to an Excel Table.
Step 2: Launch Copilot
Click the Copilot button in the Home tab. A side panel opens with a text box for requests.
Step 3: Ask Your First Question
"Summarise this data"
"What are the top 5 products by revenue?"
"Show me the trend in monthly sales"
"Are there any outliers in the profit column?"
Practical Examples
Instant Data Summary
Prompt: "Give me a summary including totals, averages, and the best performing region." — Copilot generates a summary card with key metrics.
Formula Suggestions
Prompt: "Add a column that calculates the profit margin as a percentage." — Copilot creates the column with formula applied to all rows.
Chart Creation
Prompt: "Create a bar chart comparing revenue by quarter." — Generates the chart with preview before inserting.
Tips for Better Results
| Tip | Example |
|---|---|
| Use clear column names | "Revenue" not "Col3" |
| Be specific about output | "Show as a pie chart" not just "visualise" |
| Reference column names | "Sum the Revenue column" |
| Ask follow-ups | "Now break this down by region" |
Limitations
- Requires internet — cloud-based, won't work offline
- Table format required — raw cell data won't work
- No VBA support — use Claude AI for macros
- Privacy — data is sent to Microsoft's servers
Copilot vs Claude AI for Excel
- Copilot works inside Excel — sees your data, creates charts in real-time
- Claude works externally — generates formulas, VBA, and detailed explanations
- Use both: Copilot for real-time exploration, Claude for deep formula work and automation
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