> For the complete documentation index, see [llms.txt](https://docs.keyfax.biz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.keyfax.biz/product-suite/admin/databox-expressions/text-expressions/len.md).

# Len

Returns the number of characters held within the Databox value.

<table><thead><tr><th width="167">Expression</th><th>Databox Value</th><th width="111">Result</th></tr></thead><tbody><tr><td><code>Len</code></td><td>The quick brown fox</td><td>19</td></tr><tr><td><code>Len</code></td><td>1.775</td><td>5</td></tr><tr><td><code>Len</code></td><td></td><td>0</td></tr></tbody></table>