# Array length

Returns the length of an input array as a number.

## Input type

Number array, string array, time array, boolean array

## Output type

Number

## Usage information

| Functionality | Availability |
| --- | --- |
| [Standard Quiver card](../core-concepts/index.md#cards) | Supported |
| [Transform table transform](../cards-transform-table/index.md) | Supported |