Virto Calendar Overlay App

Easily handle multiple Exchange Online and Microsoft 365 calendars within SharePoint Online and Microsoft Teams using the Virto Calendar Overlay App. This powerful tool allows you to conveniently access all your calendars from a single centralized location.

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Overlay Exchange Calendars
Combine Outlook calendars and meetings in SharePoint to create a single calendar view.
Color-Code Microsoft 365 Calendar Events
Designate a specific color for each calendar and event category to get a well-structured and clear SharePoint calendars overlay.
Customize and Share Calendars
Customize your SharePoint calendar with convenient tools based on your exact business needs.
Combine Multiple Microsoft 365 Calendars and Create Recurring Events

So much to do, so little time? Virto Calendar Overlay Pro displays all relevant events on a single calendar view.
With Virto Calendar, you can overlay SharePoint calendars with shared Exchange Online calendars. You can combine both Exchange shared calendars (including meetings and events) and private Microsoft 365 calendars. Overlay as many calendars as you like! You can also use a wide range of conditions for recurring events and use them to automate the creation of new events.

Color-Code Microsoft 365 Calendar Events and Categories

After combining events from several data sources, you’ll want to make your overlaid SharePoint calendar clear and easy to understand.
Virto Calendar makes it easy to distinguish what category or calendar each event belongs to.
Customize colors for each data source and event category in just two clicks – no coding or time-intensive adjustment required.

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Add Events from Microsoft Planner and iCal Calendars to Your Virto Calendar View

Enable Microsoft Planner as a data source and add events into your Virto Calendar. You can also display external iCal data sources with view-only mode.

Integrate Virto Calendar in Microsoft Teams

Add Virto Calendar to your Teams channel as a separate tab and use it within the Microsoft Teams App with the same functionalities. You can also add events from Outlook or SharePoint calendar data sources to your Teams calendar.

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Set Up Various Calendar Views

With Virto Calendar, you can display calendar events by day, week, month, and year. You can also view tasks and events by a particular calendar or view multiple calendars at once.
Enable a Gantt chart calendar view by applying the text filter option to find data across an event list.
Virto Calendar Overlay Pro also has a custom form tool for event creation, which is an absolute must-have for project management.

Display a Compact View of Events Using the Mini Calendar

Add the Mini Calendar View to a SharePoint site page along with your Virto Calendar and get a compact and informative calendar with events from any data source in a single view. Overlay lists and calendars from SharePoint, Outlook, and others supported by the Virto Calendar into a compact mini calendar in your SharePoint.

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Keep Your Business Running Smoothly; add a Virto SharePoint Calendar to Microsoft 365


  • View all your Exchange Online and Microsoft 365 calendars in a single view
  • Overlay other Microsoft 365 calendars with private and shared Outlook calendars
  • Display SharePoint events by day, week, month, year, and task days or hours or by multi-source and Gantt Chart views
  • Display external iCal data sources
  • Color-code each calendar and event category for a well-structured calendar overlay
  • Use the Mini Calendar feature for a compact view of all calendar events
  • Adjoin your calendar as a separate tab in Microsoft Teams

The app also supports working on SharePoint Modern sites and supports events from Microsoft Planner.

Jump in and explore Virto’s feature-rich Calendar Overlay Pro app! Try it out for a month for free to see how it elevates your scheduling needs. After your trial period ends, you can continue to use it for up to five users without any payments.

Need more solutions? Check out our Virto ONE Cloud bundle.

For SharePoint On-Premises, check our Calendar Overlay web part and Mini Calendar web part.

Virto Calendar Overlay App Customers

Implementing Virto Calendar for SharePoint Online was a no brainer for my team. After a free trial, we quickly saw what an amazing solution it is. We have been able to extend SharePoint's out of the box calendars with this app to create beautiful, interactive calendars. We even developed a conference room booking system for one of the premier sporting facilities in the US, based on the features available with Virto Calendar. The Virto team is also very quick to add new features to the application. I have seen it evolve over the past 2 years into an app we just can't live without. It seems they listen to their customers and implement the features that are needed most and lacking in the default SharePoint calendaring experience. I could not recommend a better app for SharePoint online calendaring.

Robert Woods, Microsoft Office 365 Administrator
Multiple Microsoft 365 Calendar Aggregation The Virto Calendar Overlay Pro app allows you to combine any number of SharePoint cross-site collection calendars and Exchange Online shared and personal calendars, including meeting rooms.
Microsoft Planner as a data source Easily add events from Microsoft Planner to the Virto Calendar.
SharePoint Calendar Views Virto Calendar Overlay Pro can display SharePoint calendar events in multiple views: day, year, month, week, work week, task (days), task (hours), and multi-source.
Microsoft Teams Support You can add your Virto Calendar to Microsoft Teams as a separate tab, or add events from Outlook or SharePoint calendar data sources to your Teams calendar.
SharePoint Calendar Color-Coding Distinguish events in an overlaid SharePoint Online calendar by source, assigning a specific color to each source calendar.
SharePoint Event Color-Coding Assign a specific color to each Office 365 Calendar event category in an overlaid SharePoint Online calendar.
Microsoft 365 Calendar Customization Adjust SharePoint calendar “New” and “Edit” event forms, select certain fields to show in the tooltips, customize calendar grids, and change a cell size.
Automatic Assignment of Microsoft 365 Licenses The Virto Calendar Overlay Pro app can automatically assign licenses to SharePoint site users - especially useful when managing large SharePoint teams.
Mini Calendar Compact View Add a color-coded mini calendar to your SharePoint site page for a compact view of all the events from your Virto SharePoint Calendar.
App for SharePoint Modern Sites You can use the Calendar Modern web part for SharePoint Online.
Free Use of the Complete App for up to Five Users Once you’ve completed your 30-day trial period, if you have not made a purchase yet, you can continue using your Virto Calendar for free with full functionality for up to five users.
Supports Location Field Virto Calendar Overlay Pro supports adding locations to calendar entries from the list in the calendar settings. This saves the location field for Outlook entries as well.
Busy Status Filter Filter events by free or busy status.
Supports Recurring Events Use the recurrence option for events if they belong to a SharePoint Calendar or Outlook data source.
Supports the use of iCal Feeds Add iCalendar links to show external calendars in your Virto Calendar.
Enables Creation of Teams Meetings from Calendar Events Create a Teams meeting from a Virto Calendar event (for Outlook Calendar data source).
The Virto Calendar Online App for Microsoft365 and Microsoft Teams has one more new feature. Read about it in our latest article....
The Virto Calendar Online App for Microsoft 365 and Microsoft Teams offers more features. See in our blog post what we have prepared....
Virto Calendar App for Microsoft Teams and Office 365 supports adding iCalendar feeds to your Virto Calendar view. Read in our article how you can do this....
This article describes how you can add any Virto modern web part to your SharePoint site. Follow the steps we offer and enjoy the SharePoint modern experience with Virto Modern web parts....
We have updated the Virto Calendar app. See how you can use the Status field for tooltip and event view....
See the new how-to video for the Virto Calendar App. We will show you how you can add a new data source to the Virto Calendar....
We have added the updated overview of the Virto Calendar App to our YouTube channel. Watch and see the basic features of Virto Calendar Overlay for Office 65 and Microsoft Teams....
The latest update of the Virto Calendar app provides new options for the location field. Also, now you can use the Virto Mini Calendar web part on modern SharePoint sites. See the post to get more details....
Read our article and learn how to achieve a higher level of planning and management with VirtoSoftware's Microsoft 365 tools....
Virto Calendar Online for Microsoft 365 now supports adding items from MS Planner to your shared Calendar for efficient collaboration and planning a team’s work....
How to use a SharePoint Calendar in Teams? We made it simpler with a new update of Virto Calendar!...
We would like to show you how to install the Virto Calendar directly from your Microsoft Teams and start using it as a separate tab in any Teams channel. You will see how simple the installation process is. Just follow the steps described below in the article or watch the video and start using Virto SharePoint Calendar right now!...
Have you thought about adding a public folder calendar to your Teams? We have good news for you! Now you can add your shared calendar created from a public folder in Office 365 to the Virto Calendar. And even use it in a separate tab of your MS Teams as well....
We have updated the Virto Calendar Online app for Office 365 and added some new features which you might find very useful. Please look at the list of them below in the post.

One more update of the Virto Calendar Online provides a new pack of tools. We have added them for the comfort use of our product at your request....
Virto Calendar Online app for Office 365 supports adding SharePoint events of the Calendar to your Outlook. We have prepared this use case to let you see how easy the process is. Follow the steps described below and export SharePoint events from your Virto Calendar to the Outlook....
We have updated the Virto Calendar Online. Just look at how you can unify categories of your Virto Calendar events for multiple data sources and filter them....
Virto SharePoint Mini Calendar App for Office 365 now allows you to switch to the Virto Calendar App with a single click. How it looks like and what are the benefits, please read, in our post....
VirtoSoftware is ready to introduce the new updated Mini Calendar app for Office 365 and SharePoint online. Find the improved interface, view options, additional color-coding, print settings, and many other improvements in this article....
Virto SharePoint Calendar for Office 365 displays multiple categories from Outlook, has an option to select data storage location, get attachment support, and option to copy a data source....
SharePoint Calendar app by Virtosoftware was extended with new features for multiday view: event types color coding, ability to select font size and weight, option to select left column width.
We have added ability to set colors for SharePoint color coded events in Office 365 Calendar.
You can change left column width containing day schedule (hours).
We have also added the ability to specify font size and weight for MultiDay views....
Virto Office 365 Calendar app can display Internet calendars and has option to show additional fields on events in day, week, workweek, and multisource views.
Show Internet calendars
We’ve added a new feature to display color-coded iCalendars (Outlook, google, apple, etc) in Virto Office 365 Calendar. The events from these calendars are ReadOnly.
Additional fields on events in day, week, workweek, and multisource views
You have a new option to show selected fields on event body in day, week, workweek, and multisource views. This feature is available in both Calendar and DataSource settings....
Virto Office 365 Calendar was updated. We’ve added calendars’ sorting and an option to display events in client’s time zone.
Virto Office 365 Calendar App has several new features.
You can choose the calendars and data sources availability: on all Site Collection sites or on the current site only.
2 new features were added to Calendar Customization. We added arrows to sort calendars in specified order.
Another option is ability to display events in client’s time zone.
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