# Number to date

Convert a number into a date. For conversion, pick between using Unix milliseconds, or Unix seconds.  This card is useful, for example, to convert the returned value (number data type) of a numeric aggregation on an object set Date property back to a Time type, to be used as input for other transforms or cards.

## Input type

Number

## Output type

Time

## Usage information

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