Google Calendar is the default choice for Google Workspace users and personal Gmail accounts, offering the cleanest scheduling UI and the widest third-party app integrations. Outlook Calendar is the superior pick inside Microsoft 365 environments where Exchange, Teams, and shared mailboxes are central to daily work. The decision is almost always decided by which productivity suite your organization already uses.
Quick comparison
| Feature | Google Calendar | Outlook Calendar |
|---|---|---|
| Starting price | Free plan | Free plan |
| Free plan | Yes | Yes |
| Open source | No | No |
| Self-hostable | No | No |
| G2 rating | 4.6 / 5 | 4.5 / 5 |
| Best for | Google Workspace teams, freelancers, and anyone already living in Gmail | Enterprise organizations running Microsoft 365 with Exchange-based email |
| Free plan availability | Yes — free with any Google account | Yes — free with Microsoft account (limited features) |
| Exchange / Active Directory integration | No native Exchange support | Native Exchange integration on all paid plans |
| Room & resource booking | Available via Google Workspace Admin | Built-in, supports complex policies and approval workflows |
| Mobile apps | iOS and Android — standalone app | iOS and Android — bundled in Outlook mobile app |
| Third-party app integrations | 800+ via Google Workspace Marketplace | Hundreds via Microsoft AppSource, fewer consumer integrations |
| Scheduling links (like Calendly built-in) | Appointment Schedules on Workspace Business plans | Bookings integration requires Microsoft Bookings add-on |
| Offline access | Limited — requires Chrome extension | Full offline access via Outlook desktop app |
| Shared calendar permissions | Free/busy, view details, make changes — per calendar | Free/busy, editor, delegate rights — tighter enterprise controls |
Ease of setup and daily use
Google Calendar loads in a browser tab in seconds, has zero configuration for personal use, and its color-coded week view is intuitive enough that most users never open a help doc. Outlook Calendar, while powerful, lives inside the Outlook client — a multi-pane application where new users regularly struggle to locate calendar settings. For individuals and small teams who just want a clean scheduling interface, Google Calendar wins on pure simplicity.
Enterprise calendar management
Outlook Calendar's Exchange backbone enables features that Google Workspace simply cannot match at enterprise scale: room finder with capacity filters, delegate access with send-on-behalf rights, resource booking policies, and org-wide free/busy lookups across tens of thousands of users. IT admins get granular control over calendar permissions via Active Directory and Exchange admin center. For any company already running Microsoft 365, Outlook Calendar eliminates the integration friction that third-party calendar tools introduce.
Third-party integrations and ecosystem
Google Calendar's API is widely supported, and tools like Zapier, Make, Notion, Linear, and virtually every scheduling app treat it as the primary integration target. Zoom, Loom, Calendly, and Reclaim all offer deeper or faster Google Calendar integrations than Outlook equivalents. Consumer-facing SaaS vendors ship Google Calendar support first. Outlook Calendar integrates well within the Microsoft ecosystem but lags in the broader SaaS world.
Meeting scheduling and booking
The Scheduling Assistant in Outlook Calendar shows attendees' real free/busy data without leaving the compose window — critical when booking across departments. Google Calendar's Meet with guests view is functional but lacks the side-by-side availability matrix Outlook provides. Microsoft Bookings, though a separate product, plugs into Outlook Calendar for external appointment booking. Google's Appointment Schedules feature is improving but still limited to Business and Enterprise Workspace tiers.
Mobile experience
The standalone Google Calendar apps for iOS and Android are among the most downloaded productivity apps globally, with a focused design and fast event creation via natural-language input. Outlook Mobile combines email and calendar in one app — useful for some, cluttered for others. Users who want a calendar-only experience on mobile consistently rate Google Calendar higher in app store reviews. Outlook's unified inbox approach suits power users but adds friction for casual calendar checks.
Pricing deep-dive
Google Calendar
- Free — Google account (unlimited personal calendars)
- Google Workspace Business Starter — $7/user/month
- Google Workspace Business Standard — $14/user/month
- Google Workspace Business Plus — $22/user/month
- Google Workspace Enterprise — custom pricing
Outlook Calendar
- Free — Microsoft account (web only, limited)
- Microsoft 365 Personal — $6.99/month
- Microsoft 365 Family — $9.99/month (up to 6 users)
- Microsoft 365 Business Basic — $6/user/month
- Microsoft 365 Business Standard — $12.50/user/month
- Microsoft 365 Business Premium — $22/user/month
Pricing verdict: Both tools are effectively free for personal use. At the business tier, Google Workspace starts at $7/user/month versus Microsoft 365 Business Basic at $6/user/month — nearly identical. The real cost difference is the suite around them: Microsoft 365 bundles Teams, Office apps, and Exchange while Workspace bundles Meet and Docs. Choose based on the suite, not the calendar price.
How to migrate from Google Calendar to Outlook Calendar
What real users say
Google Calendar: Users consistently praise Google Calendar's speed and the natural-language event creation (typing 'Lunch with Sarah Friday 1pm' auto-fills everything). The most common complaint is that Appointment Schedules — the built-in Calendly equivalent — requires a paid Workspace plan and lacks advanced routing rules.
Outlook Calendar: Outlook Calendar users appreciate the tight Exchange integration and the Scheduling Assistant's org-wide free/busy view, calling it essential for coordinating large meetings. The recurring complaint is the mobile app's complexity — combining email and calendar in one pane frustrates users who simply want to check their schedule.
Sources: G2Reddit r/productivityApp Store reviews
Final verdict
Choose Google Calendar if...
- Choose Google Calendar if your team runs on Google Workspace and you rely on tools like Gmail, Google Meet, or Google Drive daily.
- Choose Google Calendar if you're a freelancer or small business owner who needs a clean scheduling UI and wide Calendly/Zapier integrations without paying for a full enterprise suite.
- Choose Google Calendar if mobile-first calendar access matters — the standalone Google Calendar app on iOS and Android is faster and more focused than Outlook Mobile.
Choose Outlook Calendar if...
- Choose Outlook Calendar if your organization is on Microsoft 365 with Exchange — the native free/busy lookups, room booking, and delegate access are not replicable without it.
- Choose Outlook Calendar if your role requires managing other people's calendars or acting as a delegate/assistant, where Outlook's permission model is far more granular.
- Choose Outlook Calendar if you need full offline desktop access to your calendar, since Outlook's desktop client works completely without an internet connection.
Consider neither if: Consider a dedicated tool like Fantastical or Vimcal if you need advanced natural-language parsing, multi-account calendar views across both Google and Microsoft accounts, or AI-driven scheduling that neither native calendar handles natively.