Often space is limited on a dashboard so you need to save as much as possible. One place where Tableau wastes a lot of space is with displaying months. On a line chart showing with months on the X axis Tableau displays the full month name  – i.e. January, February…December. This takes up a lot of space. Unfortunately there’s no simple format command to format this into the short month – i.e. Jan, Feb, etc.

However it simple with a calculated field.

The formula is: LEFT(DATENAME('month',[MyDateToConvert]),3)

To save a lot of space use this calculated field pill in the place of your current month pill.

Note it is possible to use a custom date format. However this format doesn’t show on your graph unless the date field is Continuous (i.e. green). Often months are discrete (blue) hence we use the calculated field.