---
url: /process-functions/dimension-size.md
description: This function is used to retrieve the size of a dimension, returns an integer.
---

# dimension.size

This function is used to retrieve the size of a dimension, returns an integer. Returns 0 in case of invalid dimension name.

```js
dimension.size(dimension_name)
```

#### Parameters

* `dimension_name` - Name of a dimension.

#### Example

```js
let dimension_size = dimension.size("time");
```