Sync your calendars,
avoid meeting conflicts

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

Start for freeNo credit card required
Jeff Gibbard Testimonial Avatar ImageMax Wenneker Testimonial Avatar ImageTommy Rowe Testimonial Avatar ImageSilvi Lila Testimonial Avatar ImageAsim Bilal Testimonial Avatar Image

loved by 1000+ customers

Supported Calendar Providers

Google Calendar

Google Calendar

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Outlook Calendar

Microsoft Outlook

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Seamless Outlook and Google Calendar sync

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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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 handles the rest effortlessly.

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Intuitive Booking links

Effortlessly manage your appointments, meetings, and events with our user-friendly booking links. Say goodbye to tedious back-and-forth communication and confusion.

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Michael Scott

Improv Class

Are you ready to unleash your inner comedian and master the art of improvisation? Look no further! Join me, Michael Scott, for an exciting journey into the world of spontaneous creativity.

Requires confirmation
Online conferencing
America/New York

December 2023


Calendar View

With Calendar View you can view Outlook and Google Calendars in one view, hide clones created by OneCal Calendar Sync, join meetings and much more.

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OneCal multi way syncs

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
Tommy Rowe testimonial image
Head of Product Management, Feather
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
Author, Speaker
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
Administrator de Sistem Mid-Market(51-1000 emp.)
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.""
"You have such a beautiful and well-designed UI for an app I plan on setting and forgetting! lol"
"I've just signed up and it's been what I've been looking for a while."
Asim Bilal testimonial image
Senior Software Engineer
Senior Software Engineer
"I have been using OneCal to manage my multiple calendars, and I must say I'm impressed. The UI is sleek and intuitive, making it easy to navigate and manage events across different calendars. The syncing is also very reliable, and I never had any issues with events missing or duplicated. When I did have questions, Onecal's customer support team was prompt and helpful. Overall, I highly recommend Onecal for anyone looking for a powerful yet user-friendly calendar management tool."
Lindsey H. testimonial imageG2 Logo
Small-Business(50 or fewer emp.)
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
Small-Business(50 or fewer emp.)
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!"
"Your UI is just so much better than the other platforms I've tried!"
Max Wenneker testimonial image
"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
Small-Business(50 or fewer emp.)
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
Small-Business(50 or fewer emp.)
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."
Silvi Lila testimonial imageProduct Hunt Logo
Senior Software Engineer
Senior Software Engineer
"I've been using OneCal for a couple of months now, very easy to use, the synchronization process is fast and very intuitive. I would say the best product for synchronizing calendars that I've used so far. Great work guys 🙌"
Anonymous testimonial image 3
"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."
Jose P.G2 Logo
Mid-Market(51-1000 emp.)
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. "
"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 love the tool so far and will happily be an evangelist for you all!"

Seemlesly manage multiple calendars

We don't ask that you change how you work. We only aim to make it simpler. OneCal provides all the tools to make working with multiple calendars a breeze.

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.

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.

Simple Interface

No need for extensive doc pages. Everything is clearly explained and good defaults are provided out of the box.

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.