An online calendar is a great way to manage your life from home, work, and on the go. Not only do they let you keep track of events and special dates, but you can also set reminders, send invitations, share and organize events with others, and generally manage your whole life.

Many have lots of other features that make them unique, like having address books, letting you manage photos, allowing you to upload and share documents, and much more.

Below is a list of the best online calendars out there. Be sure to use the review links to learn about how they work, what you can with them, how to use them as online shared calendars, and more.

Most of the choices below have mobile apps you can use while on the go. See the best calendar apps for smarter scheduling or the best shared calendar apps for more.

Google Calendar

Google Calendar is an easy-to-use free online calendar that you can share with anyone.

  • Color-coding for calendars.

  • Easy to add new events.

  • Offline viewing in mobile app.

  • Share calendars with others.

  • Offline access only from a mobile device.

  • Possible security concerns.

Choose who’s allowed to make changes to your calendars and who can view them, or keep your Google calendars completely private. You can also invite people to single events from a completely private calendar without disclosing the other events in your calendar.

If you already have a Gmail account, using Google Calendar is as simple as opening the link. You’ll love how easy it is to access, share, update, and sync Google Calendar. Plus, making events from Gmail messages is really handy. You can even embed Google Calendar in your website or blog.

Calendar is also part of Google Workspace, which is available to anyone with a Gmail account and offers deeper integration with other Google apps, including Gmail, Drive, Docs, Sheets, and Slides.

Zoho Calendar

With a ton of options available, Zoho Calendar can be as simple or as detailed as you want it to be, definitely making it one of the best free online calendars out there. 

  • Highly customizable.

  • Embed calendar on a web page.

  • Video tutorials available.

  • Offline viewing PDF option doesn’t allow updates to calendar.

  • No copy and paste function.

This one can work for anyone because you can set your own workweek and work schedule to fit your specific lifestyle. There are multiple ways to view your calendars and add new events, and a Smart Add feature makes it a cinch to quickly create events. 

You can share your calendars with others via a web page or an ICS file, as well as save your calendar to a PDF for viewing offline. You can also subscribe to other calendars (e.g., friends or holidays) from inside Zoho Calendar so that you can see all those events next to your own.

Cozi Family Organizer

If you’re looking for a way to keep everyone in your family on the same page, check out the family organizer from Cozi.

  • Perfect for large, active families.

  • Intuitive user interface.

  • Different color assigned to each family member.

  • Severely limited compared to premium version.

  • Free version is ad supported.

  • Search and contacts aren’t available in the free calendar.

It offers a shared calendar and individual calendars for each family member, making it easy to sync activities and see what’s going on for the day, week, and month. It also works with other popular calendars like Google Calendar, Outlook, and Apple.

Besides the shareable calendars, you can also email or text to-do lists and grocery lists to certain family members with just a click. You can also store recipes on your calendar.

The free mobile apps give you access even when you’re out of the house.

30 Boxes

The 30 Boxes calendar has a simple design that lets anyone create and use an online calendar easily.

  • Supports plain language entries.

  • Schedule recurring events.

  • Colored tags for emphasis and organization.

  • Share all, part, or none of the calendar.

  • Doesn’t warn if two events are scheduled at the same time.

  • Bare-bones website doesn’t provide much information before you register.

Create events with a click and add notes, text, or email reminders, repeating events, and invites. There’s also a to-do list that’s not part of the calendar so that you can fill it with things you need to get done but don’t want to define a date for.

Events can be structured so you see them by week or in a list with an agenda view. There’s also a view that shows a map of all your events that have a location attached to them.

If you like to get daily email summaries of your online calendar events, 30 Boxes lets you do that, too.

Something else worth mentioning about this online calendar is that when you add events, you can add the same event to multiple days at once by picking dates on the calendar, something you can’t even do with some of the more popular online calendar websites.

You can share the calendar with others via RSS, iCal, a read-only web page, or even through your own website with embeddable HTML code. You can also print the calendar in the day, week, agenda, or month view.

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