To Hide all birthdays, follow the below process;
- Open Google Calendar.
- Under “My calendars,” uncheck Contacts. Calendars with an empty box next to them are hidden.
Hide birthdays from your calendar list
You can hide the Contacts calendar so that it doesn’t appear under “My calendars.”
- Open Google Calendar.
- On the left, find “My calendars.“ You may need to click to expand it.
- Point your mouse at “Contacts” and click Options
Hide from list.