A progress circle is an indicator for providing feedback about an ongoing, user-initiated process using a circular visual.
Use a progress circle to set an expectation of the loading time. Progress circles are compact and can indicate progress in areas that cannot accommodate a progress bar.
The track is a complete circle that contains the indicator.
The indicator travels along the track to show progress.
There are five sizes for progress circle.
Use when the process has a known duration. It shows process completion towards a specific maximum term.
Use when the process has no estimated end time. It indicates that work is occurring without indicating an estimated time until completion. It is also known as the spinner.