---
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title: len()
collection: developer
version: current
locale: en-us
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canonical_url: https://developer.salesforce.com/docs/analytics/bi-dev-guide-saql/guide/bi-saql-functions-string-len.html
source_site: developer.salesforce.com
content_type: documentation
content_hash: bf2803a28d2bf17b670faed79fd7df605f883501533ccb556dd0c503d9fb1273
products:
  - Analytics SAQL Developer Guide
  - analytics
---

# len()

Returns the number of characters in the string.

## Syntax

`len`(_string_)

## Usage

Leading and trailing whitespace characters are included in the length returned. Returns `null` if _string_ is `null`.

## Example

```nolang
len("starfox") == 7
len(" rocket ") == 8
len("謝") == 1
len("") == 0
```