---
url: /process-functions/dimension-getid.md
description: This function is used to retrieve the id of a dimension.
---

# dimension.getId

This function is used to retrieve the id of a dimension.

```js
dimension.getId(dimension_name)
```

#### Parameters

* `dimension_name` - The name of a dimension.

#### Example

```js
let dimension_id = dimension.getId("time");
```