Google Calendar Delete Duplicate Events. Thankfully, google calendar offers a simple and efficient way to delete multiple events at once. Remove all the duplicates in google calendar with gcaltoolkit (click below to download the correct version for your computer).
Here’s how to clean up any duplicate events in your calendars: Event merge for google calendar (chrome.google.com/webstore link) is a chrome extension that visually merges the same event on multiple google calendars into one event.