> For the complete documentation index, see [llms.txt](https://v5docs.keyfax.biz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://v5docs.keyfax.biz/reference/expression-reference/numeric-expressions/number.md).

# Number

Treats the databox value as a number. Where the value is not numeric, the expression fails rather than guessing at a value.

| Expression            | Databox value | Result  |
| --------------------- | ------------- | ------- |
| `Number > 12`         | `12.34`       | `True`  |
| `Number Format("F2")` | `12.3456`     | `12.35` |

This is the function to put in front of any arithmetic or numeric comparison on a value that arrived as text — from a question, a database column or a web service.

See also [AsNum](/reference/expression-reference/numeric-expressions/asnum.md), and [Number formatting](/reference/expression-reference/number-formatting.md) for the format specifiers.