# Date difference

Returns the difference between two dates in the specified unit.

The available units are:

* Week
* Day
* Hour
* Minute
* Second
* Millisecond

## Input type

Time

## 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 |