Sync your calendars,avoid scheduling conflicts

OneCal syncs Outlook and Google Calendars in real-time, helps avoid double bookings, saves time, and keeps your personal life private.

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Supported Calendar Providers

Google Calendar

Google Calendar

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Microsoft Outlook

Microsoft Outlook

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Apple Calendar

Apple Calendar

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Coming soon

Sync Multiple Calendars & Simplify Bookings

Easily sync multiple calendars and reduce double bookings. Set up individual or team booking links to facilitate easy appointments and meetings.

Calendar Syncing

Privacy-focused Calendar sync

OneCal provides a privacy-centric Outlook and Google Calendar sync setup that allows customizing how events are replicated across your calendars. Whether you prefer excluding the event titles or displaying specific information, OneCal gives you complete control over the level of detail shown.

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Multi-way Calendar Sync Direction

Sync multiple calendars in real-time, effortlessly

With OneCal, you can sync multiple Outlook and Google Calendars in one go. Just select the calendars you want to keep in sync, and OneCal will keep them in sync in real-time.

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Booking Links

Share Individual or Collective Booking Links

Effortlessly share booking links for others to schedule time with you or your team. Say goodbye to tedious back-and-forth communication and confusion.

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Michael Scott

Improv Class

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America/New York

June 2024

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Calendar View

Consolidate Your Calendars: All Events in One View

No more calendar juggling: with Calendar View you can view Outlook and Google Calendars in one view, hide clones created by OneCal Calendar Sync, quickly join meetings, and much more.

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OneCal Calendar View Feature

Privacy Focused

We value your privacy

Our mission is to help you reflect your real availability across multiple calendars, not sneaking into your personal data.

Secure Access to your Calendars

OneCal connects to Google using secure OAuth connections such that we never see or store users Google passwords. You can revoke the access at any time.

Minimum Permissions Required

OneCal only requests read and write access to your calendars for the purpose of synchronising your calendars. We won't jeopardize your calendars.

No data stored

We don't store any calendar event data. We don't analyze any event data. We don't sell or monetize any data.

users love onecal

Trusted by thousands of professionals

OneCal - Synchronize your calendars in real-time | Product Hunt
Phillip Lanos Testimonial Image
Phillip Lanos
Business Development Specialist
Tommy Rowe Testimonial Image
Tommy Rowe
Head of Product Management, Feather
"Having multiple calendars has always been a pain. Missed invitations and unclear availability made managing schedules a nightmare. Thanks to OneCal, my team and I are always on the same page, and scheduling meetings is a breeze. "
Jeff Gibbard Testimonial Image
Jeff Gibbard
Author, Speaker
"Managing multiple calendars is frustrating. I've tried other calendar syncing solutions and many of them cause massive duplicates, have a horrible UX, or are way too expensive.
OneCal is a perfect blend of everything making managing multiple calendars easy and cost-effective. I highly recommend it.
"
Jacob H. Testimonial ImageG2 Logo
Jacob H.
Administrator de Sistem Mid-Market(51-1000 emp.)
"By natively syncing bookings through the Google/Microsoft APIs, versus adding other calendars in "view only" mode, OneCal effectively prevents conflicts within each calendar. Also, syncing all of these work calendars to a personal calendar (or their web UI) gives you a single pane of glass to work from (e.g. if you're manually scheduling an event over the phone or trying to find some free time in your day).It was easy to setup & has a good number of options to maintain the privacy & security across calendars. I am not worried that Client X will see that I am meeting with Client Y - if they look at my calendar, they'll just see "Busy.""
Zoe AshbridgeHubspot logo
Zoe Ashbridge
Co-Founder & Senior SEO Strategist
"While OneCal isn't managing projects, it is keeping my workload manageable and the monotony of checking multiple calendars at bay. This means I can go to any calendar for an accurate display of what's happening in all of my calendars.Ultimately, it saves me a lot of time and rids me of calendar anxiety."
"You have such a beautiful and well-designed UI for an app I plan on setting and forgetting! lol"
Jimbo M.G2 Logo
Jimbo M.
Small-Business(50 or fewer emp.)
"OneCal solved ALL calendar issues!
I have 5 different gmail calendars and OneCal is like, "Not a problem!"

I need multiple booking links - OneCal - "Not a problem."

I had an issue (user issue for sure) and A REAL PERSON from OneCal is emailing me with a solution before the end of day.

You simply cannot beat this tool or their amazing support.
"
Lindsey H. Testimonial ImageG2 Logo
Lindsey H.
Small-Business(50 or fewer emp.)
"This has been a true life-saver to have updates syncing in real-time and eliminates the need for a third-party calendar sharing view for me. Was a breeze to set up as well. Thank you for inventing this!"
Johnny Josefsson Testimonial Image
Johnny Josefsson
Small-Business(50 or fewer emp.)
"Onecal is a great tool for our change management and interim C-level consultants who work with multiple clients on a long-term basis.It helps to manage multiple calendars, as we have accounts within those clients environment, and prevents double bookings of those calendars. It is a great calendar hero! It makes us look and be professional!"
Egor Danilov Testimonial Image
Egor Danilov
Chief Product Officer
"I just tried OneCal and it's fantastic!I was paying for Calendly's booking links $11/mpnth and you do the same plus calendars sync for $48/year. You guys are awesome!"
"I love the tool so far and will happily be an evangelist for you all!"
Max Wenneker Testimonial Image
Max Wenneker
Founder
"OneCal is a great tool that's getting greater every day thanks to an exceptionally responsive and capable development team. The UX of this tool and its actual abilities are fantastic. As a consultant, I have multiple clients with calendars I need to sync. This tool does it better than any other I've seen!"
Marek S. Testimonial ImageG2 Logo
Marek S.
Small-Business(50 or fewer emp.)
"During my search for a meeting scheduling solution, I discovered OneCal. I realized that it could effortlessly address all my calendar-related issues. The setup process was incredibly intuitive, and I can't think of a single drawback to this solution. I had it up and running in just three minutes. "
Jeff B. Testimonial ImageG2 Logo
Jeff B.
Small-Business(50 or fewer emp.)
"It's a once-and-done setup, a few minutes to add and sync the calendars and then you never need to touch it again. And reasonable permissions manifest as well.OneCal has been head and shoulders above any other interaction I've seen, with responsive devs eager to explain their design and even implement new features. During my search for a meeting scheduling solution, I discovered OneCal. I realized that it could effortlessly address all my calendar-related issues."
"Far too often I've had to send the message: 'Sorry, I know my calendar looks open at that time but I actually have a conflict.'! This is going to take a lot of manual scheduling effort off my hands so I can stay focused on the real work!"
"I've just signed up and it's been what I've been looking for a while."
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Simeon Lakuc
Public Relations Exectuive
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Verified User in Consulting
Small-Business(50 or fewer emp.)
"OneCal is the best service I have found for calendar synchronization and management. I synchronize seven calendars using a combination of Google Workspace and Office 365 calendars, and OneCal keeps everything in sync. It offers me an easy way to manage my busy schedule across seven engagements. The game changer is OneCal's customized booking links, each customized with a unique logo. In every email account, I have a personalized link that directs the booker to the specific domain calendar, ensuring that each client and customer feels they are receiving a highly individualized service, even though I'm managing seven different calendars.I have tried other services, and while they work well, none work as quickly and cleanly as OneCal."
Anonymous Testimonial Image 4
Rosario Kornder Consulting
"As a contracting firm, we need to maintain independent calendars for all our clients with a unified Master Calendar to book our consultant's schedule in real-time. Maintaining these manually was an impossible task. We tried several solutions from different sync products but no one got is right until we found OneCal. Great product, easy to set up but what really brought it home was the technical support. Support staff helped us understand the best way to set things up to get exactly the end result we needed."
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Jose P.
Mid-Market(51-1000 emp.)
"Yes, there are similar services (more or less) that get near what OneCal does but... the costumer service is beyond anything I've experienced in my entire life. "
"Your UI is just so much better than the other platforms I've tried!"

Seemlesly Manage Multiple Calendars

OneCal is the go-to tool to manage multiple calendars. We've got you covered from Outlook and Google Calendar synchronization to scheduling links!

Real-Time Updates

Your calendars are automatically updated in real-time as the original events change or new events are added.

Multi-Way Syncs

Choose from one-way or multi-way syncs between 2 or more calendars. Set up once and forget.

Team Plans

We offer team plans for your whole organisation to start using OneCal and sync their calendars.

Scheduling Links

You can easily create and share individual or collective scheduling links in minutes.

Fully Configurable

OneCal provides all the necessary tools to easily configure exactly what you want to sync over. No more, no less.

Privacy Focused

We only store the data we absolutely need to perform the sync. No data about your events is stored in our systems.

Frequently asked questions

Ready to sync your Calendars?

Reflecting your availability across multiple calendars is tedious and time-consuming. OneCal was created with a mission to give peace of mind to calendar users.