How it works.
LEN counts the number of characters in a string, including letters, numbers, punctuation marks, special characters, and spaces.
💡 In simple terms.
Counts the total number of letters, numbers, spaces, and symbols inside a text cell.
"Think of this like counting letters in a word. If you count the letters in "Apple", you get 5."
Formula syntax.
Standard Excel Notation=LEN(text)[like_this] are optional; all other arguments are required.Formula arguments.
Every parameter accepted by the LEN function is detailed below.
The text whose length you want to find. Spaces are counted as characters.
Example value:A2Simple example.
Step-by-Step ScenarioValidate Character Length
Count the characters in product SKU strings in column A.
| Product SKU | Supplier | SKU Length | ||
|---|---|---|---|---|
| SKU-1029-A | Logitech | — | — | — |
| SKU-992 | Dell | — | — | — |
| SKU-9201-B2 | HP | — | — | — |
=LEN(A2)Evaluates LEN over the sample table cells, placing the verified output in cell C2:C6.
Formula generator.
Full Generator WizardCustomize the argument fields below to generate a tailored LEN formula ready to paste directly into your worksheet.
=LEN()Expected result behavior.
Returns "Calculated output" based on sample evaluation criteria and active cell references.
Best Practices
- Combine LEN with SUBSTITUTE to count occurrences of a specific character within a cell (e.g. `=LEN(A2) - LEN(SUBSTITUTE(A2, "e", ""))` counts the number of "e"s).
- Numbers are automatically converted to text strings and their digits counted.
Common Mistakes
- Leading or trailing spaces will inflate the count. Clean the text using TRIM first if necessary.
Platform & version compatibility.
Verified platform compatibility matrix based on actual spreadsheet calculation engine specifications.
Core standard function supported across all modern and legacy Microsoft Excel versions (365, 2021, 2019, 2016, 2013, 2010), as well as Excel for the Web and Mac.
100% compatible with Google Sheets. Uses identical argument order, data types, and standard calculation logic.
Frequently asked questions.
Technical Q&ACan I use LEN across different worksheets in Excel?↓
Yes. You can reference cells located on other sheets by including the sheet name followed by an exclamation mark, for example: =LEN(Sheet2!A2:A10). If the sheet name contains spaces, enclose it in single quotes: ='Q1 Report'!A2:A10.
What is the most common reason for errors in LEN?↓
Leading or trailing spaces will inflate the count. Clean the text using TRIM first if necessary.
Does LEN work identically in Google Sheets?↓
Yes, LEN is supported in both Microsoft Excel and Google Sheets with standard evaluation behavior.