How to Use the LEN Function
Last updated: 2026-09-06
⚡ Quick Answer
The LEN function returns the number of characters in a text string, including whitespace.
=LEN(A2)📊 Visual Demo
HOME · INSERT · FORMULAS · DATA
fx =LEN(A2)
| A | B | C | D | E | |
|---|---|---|---|---|---|
| 1 | 1 | ABC-12345 | Max 10 Chars | =LEN(A2) | 9 Characters |
| 2 | 2 | Zip Code 90210 | Exact 5 Chars | — | 5 Characters |
| 3 | 3 | Audit | Compliance | Verified | Passed |
🧠 Deep Dive
The LEN function returns the number of characters in a text string, including whitespace.
Key Insights
- Text functions are position-based (LEFT, RIGHT, MID).
- FIND is case-sensitive, SEARCH is not.
Common Mistakes
- Hard-coding character positions on variable data.
Pro Tips
- Parse once into helper columns.
- Test on longest/shortest strings.
FAQ
What does this formula do in plain English?
The LEN function returns the number of characters in a text string, including whitespace.
Why is my formula not working?
Hard-coding character positions on variable data.
Does this work in Google Sheets?
Yes, this syntax is fully compatible with Google Sheets.
What is the most common mistake?
Hard-coding character positions on variable data.
Related Guides
How to Use TEXTJOIN in ExcelHow to Use LEFT, RIGHT, and MIDHow to Format Text Case in ExcelHow to Use the EXACT FunctionExcel Error Hub
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