A range of functions are available to process Placekeys in Studio expressions.

| Function                  | Arguments            | Return Type | Description                                                                                       |
|--------------------------|----------------------|-------------|---------------------------------------------------------------------------------------------------|
| `geoToPlacekey()`        | `real`, `real`       | `string`    | Returns only the Where Part of a Placekey corresponding to the latitude and longitude arguments. |
| `placekeyToLat()`       | `string`             | `real`      | Returns the latitude of the centroid of the H3 hexagon in the Where Part of a Placekey.        |
| `placekeyToLng()`       | `string`             | `real`      | Returns the longitude of the centroid of the H3 hexagon in the Where Part of a Placekey.       |
| `placekeyIsValid()`     | `string`             | `boolean`   | Returns `true` if the Placekey is valid.                                                         |
| `placekeyDistance()`    | `string`, `string`   | `integer`   | Returns the distance between the centroids of the H3 hexagons in the Where Parts of two Placekeys.|
| `placekeyToH3()`        | `string`             | `string`    | Returns the Where Part of a Placekey (in H3 hexagon ID encoding).                               |
| `h3ToPlacekey()`        | `string`             | `string`    | Returns a Placekey containing the Where Part corresponding to the given H3 aperture 10 hexagon. |