By the end of this guide, you'll be using ChatGPT Plus as your personal Excel expert — describing what you need in plain English and getting working formulas, VBA macros, and model logic in seconds. You'll stop spending 20–45 minutes on Stack Overflow for formula help and eliminate the frustrating "why is my VLOOKUP returning N/A?" debugging spirals.

• A ChatGPT account (free works; Plus is better for sustained sessions)
• Microsoft Excel (any modern version — 2019, 2021, or Microsoft 365)
• A specific formula challenge or model to improve
• Time needed: 10 minutes to set up; saves 20–45 minutes per formula challenge
• Cost: Free (limited) / $20/month (ChatGPT Plus)