Google Sheets Apps Scripts: Custom Function Convert Unix Timestamp to Date

At Google Sheets, click Tools -> Script Editor.

Edit the script and click Save.

function TIMESTAMP_TO_DATE(value) {  return new Date(value * 1000);}

Now you can use this custom function / formula in Google Sheets.

=TIMESTAMP_TO_LOCAL(1563247671)

References:

• https://developers.google.com/apps-script/guides/sheets/functions