The fastest way to see someone else's calendar

To add someone's calendar in Outlook, you need their email address and their permission. Open Outlook, go to the Calendar view, and select "Add Calendar" from the left sidebar — then choose "From Directory" if they work in your organization, or "From Email" if they're outside it. Type their email address and Outlook will send them a sharing request. Once they accept, their calendar appears in your sidebar and you can see their availability without switching between windows.

The exact steps depend on whether you're using Outlook on the web, Outlook desktop, or Outlook on your phone. The web and desktop versions work nearly the same way. Mobile is simpler but shows fewer details.

Key Takeaways

  • You need the other person's email address and their permission to see their calendar — Outlook sends them a request when you add them.
  • In Outlook desktop or web, go to Calendar view, select "Add Calendar," then choose "From Directory" for coworkers or "From Email" for anyone else.
  • The person you're adding must accept the sharing request before their calendar becomes visible to you.
  • Once added, you can see their free and busy times, and in some cases their event titles, depending on what permissions they grant.
  • You can remove someone's calendar from your view at any time by right-clicking their name in the sidebar and selecting "Remove."

Adding a calendar in Outlook desktop

Open Outlook and switch to the Calendar view by clicking the Calendar icon in the left navigation pane. In the left sidebar under "My Calendars," you'll see a plus sign or an "Add Calendar" option. Click it and select "From Directory" if the person works in your organization, or "From Email" if they don't.

Type their email address into the search box. If you choose "From Directory," Outlook will search your company's directory and show you matching names. If you choose "From Email," you can paste or type any email address. Once you find the right person, click their name and Outlook sends them a sharing request. They'll receive a notification asking whether to let you see their calendar.

While you wait for them to accept, their name appears in your sidebar but shows as "pending." Once they accept, you'll see their calendar events and availability. If they decline or don't respond within a few days, you can send the request again or ask them directly to share their calendar with you.

Adding a calendar in Outlook on the web

Log into Outlook.com or your organization's Outlook web portal and click Calendar in the left navigation. Look for "Add Calendar" in the left sidebar — it's usually near the top, sometimes shown as a plus sign next to "My Calendars."

Click "Add Calendar" and choose "Subscribe from Directory" for coworkers or "Subscribe from Email" for external contacts. Type the person's email address and click Search or Add. Outlook sends them a sharing request, and their calendar will appear in your sidebar once they accept.

The web version works identically to desktop Outlook, so the steps are the same whether you're at your computer or on a tablet. The main difference is that some advanced sharing settings are easier to find in the desktop version.

Adding a calendar in Outlook mobile

Open the Outlook app on your phone and tap the Calendar tab at the bottom. Tap the plus sign or "Add Calendar" button — the exact location varies by phone model and app version, but it's usually at the top right or in a menu.

Tap "Add Other's Calendar" or "Subscribe to Calendar," then type the person's email address. Tap Search and select their name from the results. Outlook sends them a request, and once they accept, their calendar appears in your calendar list.

Mobile Outlook shows you whether someone is free or busy, but usually doesn't display event titles unless they've given you full access. If you need to see details, open the desktop or web version instead.

What happens when you share your own calendar

When someone sends you a calendar sharing request, you'll see a notification in Outlook. You can accept, decline, or ignore it. If you accept, they can see your calendar according to the permissions you set — usually "Can view when I'm busy" (the default) or "Can view all details."

"Can view when I'm busy" means they see your free and busy times but not event titles or descriptions. "Can view all details" shows them everything on your calendar. You can change these permissions later by going to your calendar's sharing settings.

If you want to share your calendar with someone without waiting for them to request it, you can initiate the share yourself. Right-click your calendar name in the sidebar, select "Sharing Permissions" or "Share," and type their email address. Choose what level of access to give them, and Outlook sends them an invitation.

Troubleshooting when a calendar won't add

If you type someone's email address and Outlook says it can't find them, the most common reason is a typo. Double-check the spelling and try again. If the address is correct but still doesn't appear, they may not have a calendar set up yet, or their organization may not allow calendar sharing.

If you've sent a request and it's been more than a few days with no response, the person may not have seen the notification. Send them a message directly asking them to accept the sharing request, or ask them to share their calendar with you instead — sometimes initiating the share from their end works faster.

If you can see someone's calendar but it's not updating, try removing it and adding it again. Right-click their name in your sidebar and select "Remove," then add them again using the same method. This usually fixes sync problems on desktop Outlook.

Managing multiple calendars in your view

Once you've added several people's calendars, your sidebar can get crowded. You can hide or show any calendar by clicking the checkbox next to their name — unchecking it hides their events from your main calendar view without removing them.

You can also color-code calendars to make them easier to spot. Right-click a calendar name and select "Change Color," then pick a shade. This is especially useful if you're tracking availability for a team or a project group.

If you want to stop seeing someone's calendar entirely, right-click their name and select "Remove." This doesn't affect their ability to see your calendar — you're only removing them from your view. If you change your mind later, you can add them again.

Frequently Asked Questions

Can I see someone's calendar if they don't accept my request?

No. Until they accept the sharing request, their calendar won't appear in your view. You can send the request again after a few days, or ask them directly to share their calendar with you instead.

What's the difference between "can view when I'm busy" and "can view all details"?

"Can view when I'm busy" shows only free and busy blocks — they see that you have an event at 2 p.m., but not what it is. "Can view all details" shows event titles, descriptions, and locations. Choose based on how much privacy you need.

Can I add a calendar from someone who uses Gmail or Apple Calendar?

Yes, if they use Outlook on the web or have an Outlook.com email address. If they use Gmail or Apple Calendar exclusively, you'll need to ask them to share their calendar link with you, then subscribe to it manually in Outlook — the process varies by platform.

What if I accidentally remove someone's calendar and want it back?

Add them again using the same method you used the first time. They don't need to re-accept the sharing request — Outlook remembers that they already granted permission, so their calendar reappears when ready.

Can I see someone's calendar if they work for a different company?

Yes, as long as they have an email address and accept your sharing request. Use "From Email" instead of "From Directory," type their email address, and send the request. The process is the same whether they're in your organization or not.