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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Create team and project calendars
Combine Outlook calendars and meetings in SharePoint to create a single calendar view.
Hit your deadlines everytime
Get a clear view of timeline shifts and updates. With Virto Calendar, everyone is on the same page.
Create events or Teams meetings
Effortlessly craft your events or launch Teams meetings, all in one seamless experience
Keep you data secure
We guarantee complete security for both your corporate and personal data at all times.

Stay Synchronized with a Shared Calendar

Virto Calendar brings all of your calendars together in one place, so you can manage work, personal life, and everything in between. Overlay multiple Exchange, SharePoint, and Google calendars and events on a single calendar view. Combine meetings, events, bookings, and task deadlines to get a clear view of your or your team’s schedule.




Focus on what matters with color-coding

Color-categorize your events and sources, and choose from five display views to create the look and feel you want. Customize colors for each calendar source and event category in just two clicks – no coding or time-intensive adjustment required.

Different sources, one view

Get rid of repetitive manual syncing, and minimize errors with the help of a customizable no-code centralized calendar. Add events from Microsoft Planner, task lists from SharePoint, and online calendars from different sources to your Virto Calendar view.



Create a Central Calendar in Microsoft Teams

Provide real-time updates to your teams and executives with a quick summary of your program. Add Virto Calendar to your Microsoft Teams channel as a separate tab and use it within Microsoft Teams with the same functionalities.

View your work your way

Sort calendar data into easily digestible views, daily, weekly, monthly, multi-monthly, quarterly, and Gantt views for easy project management.

Manage timelines on-the-go

Spend less time planning and more time doing with a shareable calendar that works across any device. You can use Virto Calendar on most smartphones and tablets by visiting in your mobile or tablet web browser.

Organize your team and time with the 1# Microsoft 365 calendar

  • 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 Virto Calendar Overlay! 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.

Simple pricing for all business sizes

Get Virto Calendar Overlay of all Virto Apps in one package

Virto Calendar Overlay

Starts at

$2/per user per month
billed annually

  • Virto Calendar Overlay
  • Single License for M365
  • Compatible with SharePoint and Teams

Virto One Bundle

Starts at


  • Virto Calendar Overlay
  • Virto Kanban Board
  • Virto Gantt Chart
  • Virto Alerts and Notifications
  • Other Productivity Apps
  • Single license for all M365 apps
  • Compatible with SharePoint and Teams

Need help or have a question?

Contact us: [email protected]

Purchase Info and Discounts

After you press the “add to cart” button, you will be forwarded to a secure zone of our processing partner Avangate, where you can select quantity, select additional services, and finish checkout.

📖 Educational and non-profit discounts

We are glad to offer a set of special 20% discounts for schools, colleges, universities, hospitals and charity organizations. Please contact our sales department for more information.

🌟Volume Discounts

We provide discounts for 2 years and 3-year subscriptions as follows:

2 years – 10%

3 years – 20%

December 2, 2023
I must mention the Virto support - they made every effort to ensure our satisfaction with both the app and the licensing structure across tenants. Now the solution aligns seamlessly with our business requirements, and its integration with Teams is flawless - especially the fact that you can schedule Teams meetings directly from calendar events and manage them without switching to sharepoint.
May 8, 2023
Perfect for showing all the calendars you have in a team's channel in MS Teams. Though I'd updated a design a bit as in some places (like mini calendar), some buttons seem to be misplaced.
April 25, 2023
This calendar is a game changer for my team. We have a host of calendars, including external, that we needed to gather in Teams. We managed to do it quickly and easily only with this app. Although it seems that Virto calendar has too much settings, we quickly adapted it to our needs.
August 23, 2022
In my opinion, that is the best calendar app for ms teams! It has nice layout work, intuitive design, and a wide range of customization features. I really love the “Mini-calendar” feature to have a compact view of all my events. And it's great that the app also supports recurring events for Outlook and SharePoint Calendar data sources.
August 20, 2022
I have worked with the VirtoSoftware team for some time to get this teams calendar app installed into our enterprise environment. And I cannot brag enough about the support team! They did their best to ensure our employees were happy with this application and the licensing structure around many tenants. And now the solution suits our business needs most effectively. It also has a perfect MS Teams integration! It’s really convenient to create Teams meetings right from Calendar Events and manage all events without switching between the applications.
April 8, 2022
Great office 365 calendar tool. Always works reliably. I’ve searched for a long time for a solution to combine multiple calendars in a single view. This feature was critical for our company, making this tool the best calendar app for Microsoft Teams & Office 365 & SharePoint. The performance and price could hardly be better.
November 6, 2021
The interface and functions from the first sign may seem not so obvious to the novice user, but I love the feature of this Office 365 calendar tool to "overlay Exchange Online shared calendars," which saves an unbelievable amount of time. The ability to view all of the existing calendars or re-input your data into all of them – is vital for my work. My rate is 5/5.
October 7, 2020
Great scheduling solution! I could overlay my SharePoint and shared Exchange calendars in one centralized view and check the meetings room availability within a couple of minutes! Very easy-to-use and fast-working office 365 calendar tool.