AI Excel Formula Generator 2026: 7 Free Tools That Write Formulas for You
Describe what you want in plain English, get the Excel formula. These free generators save spreadsheet hours.
💡 What You Will Learn
Describe what you want in plain English, get the Excel formula. These free generators save spreadsheet hours.
📜 Table of Contents
AI Excel Formula Generator 2026: 7 Free Tools That Write Formulas for You
The most common Excel task is also the most painful: writing complex formulas from scratch. AI formula generators translate plain English into working Excel/Google Sheets formulas. Here are the seven that are actually free and actually good in 2026.
The 7 Tools
1. ChatGPT free tier. The most flexible: "give me a formula that counts unique values in column A if column B is over 100" returns a working formula plus explanation. Best for complex multi-condition logic.
2. Claude free tier. Equally strong at formulas, often better at explaining the logic step by step and catching edge cases.
3. Excel Formula Bot (excelformulabot.com). Purpose-built: type "extract first name from full name", get =LEFT(A1,FIND(" ",A1)-1). Free tier covers basic use.
4. SheetsGPT / Google Sheets AI. Google's built-in AI (Gemini) in Sheets: describe the formula in a cell, press enter, get the formula. Free with your Google account.
5. Formula Generator (formulagenerator.app). Simple English-to-formula with category filters; free tier for standard functions.
6. Microsoft Copilot in Excel. If you have Microsoft 365, Copilot writes formulas, suggests pivot tables, and explains existing formulas. Included in the subscription.
7. Ajelix AI Excel Tools. Free tier generates formulas and explains existing ones; good for VLOOKUP/XLOOKUP heavy work.
Prompt Patterns That Work
Be specific about: - Cell ranges: "column A rows 2-100" - The condition: "only if value is greater than 100" - The output: "return text, not number"
Example prompts: - "Formula to sum column C where column A = 'Yes' and column B is a date in 2026" - "Find the second-largest value in D2:D50 and return the name in column A on the same row"
Always Verify
AI formula generators occasionally hallucinate function names or argument order. Before relying on a formula:
- Test on a copy of your data
- Check for #N/A, #VALUE errors on edge cases
- For critical spreadsheets, have someone review the logic
FAQ
Are these tools safe for sensitive data? Do not paste customer lists or financial data into free tiers. Use Microsoft/Google built-ins or enterprise versions for sensitive work.
Can they write VBA/macros? ChatGPT and Claude can write basic VBA; purpose-built formula bots usually only handle worksheet functions.
Which is best for a beginner? ChatGPT or Claude - they explain what the formula does, which is how you actually learn.
❓ FAQ
Are these tools safe for sensitive data?
Do not paste customer lists or financial data into free tiers. Use Microsoft/Google built-ins or enterprise versions for sensitive work.
Can they write VBA/macros?
ChatGPT and Claude can write basic VBA; purpose-built formula bots usually only handle worksheet functions.
Which is best for a beginner?
ChatGPT or Claude - they explain what the formula does, which is how you actually learn.
Written by our editorial team; tools listed here are tested or verified against public sources. Links point to official sites or GitHub repos for reference only โ no paid placements.
