Show week number
It’s possible to display the week number on the Gantt schedule. Follow these steps to show the week number:
Open the configuration panel
Check the Show Week Number setting
Close the configuration panel by clicking the Update button
Save the Gantt chart
Week numbers are displayed on the timeline header at respective zoom levels:


Week numbers are determined based on the configured week settings. You can choose the week start day and week numbering style (US, European / ISO 8601, or Islamic), and week numbers will follow the selected standard.

Calendar Style | Week Starts On | How Week 1 is Determined |
|---|---|---|
US | Sunday | Week 1 is the week that contains January 1. |
European (ISO 8601) | Monday | Week 1 is the week that contains the first Thursday of the year (equivalently, the week containing January 4). |
Islamic | Saturday | Week 1 is the week that contains January 1, with weeks starting on Saturday. |