# Add a Milestone

Source: [https://docs.virtosoftware.com/docs/virto-gantt-chart-web-part/using-virto-gantt-chart-web-part/working-with-tasks-in-virto-gantt-chart-web-part/add-a-milestone/](https://docs.virtosoftware.com/docs/virto-gantt-chart-web-part/using-virto-gantt-chart-web-part/working-with-tasks-in-virto-gantt-chart-web-part/add-a-milestone/)
Product: Virto Gantt Chart Web Part
Updated: 2026-08-12


When task start date equals task end date the task is displayed as **milestone**. If you create new task as described in previous section and define equal start and end date and time, it will be shown as milestone – a task with zero duration.

![Zero-duration task shown as a milestone when start and end dates are equal in the Virto Gantt Chart](https://img-docs.virtosoftware.com/wp-content/uploads/2024/10/add_a_milestone_1.png)

Or click “**+Milestone**” to add a milestone to the chart.

![+Milestone button used to add a milestone to the Virto Gantt Chart](https://img-docs.virtosoftware.com/wp-content/uploads/2024/10/add_a_milestone_2.png)