Your schedule is worth protecting
Your calendar is a record of your life. Proton Calendar helps keep it private.
Choose the world’s largest encrypted calendar service
Free calendar
Everyone has the right to privacy, which is why Proton Calendar is available for free. Protect your schedule at no cost, and unlock features like sharing with a paid plan.
Your data, your rules
Proton Calendar is a calendar that respects privacy and puts people (not advertisers) first. Your data belongs to you, and our encryption ensures that.
Swiss privacy
Proton is incorporated and headquartered in Switzerland. This means all user data is protected by strict Swiss privacy laws and Swiss neutrality.
Make every day safer with end-to-end encryption
Proton Calendar automatically secures all your events with end-to-end encryption. Events received from people who use other calendars are secured with zero-knowledge encryption.
In both cases, event details, including the title, description, location, and people invited, are encrypted so not even we can see them.
Proton Calendar helps you make the most of your day
Get more from Proton Calendar when you use Proton Mail
Get more from Proton Calendar when you use Proton MailProton Mail email address that you can use to securely send event invites. You can also add events to Proton Calendar directly from your Proton Mail inbox.
Proton Calendar helps you make the most of your day
All the features you expect, plus privacy
Keep your plans private with Proton Calendar
Like all Proton products, our calendar puts you in control of your privacy. Your schedule, meetings, plans, and events stay private — all secured by end-to-end encryption.
Trusted by over 50,000 business users and 100 million users around the world.
One account for private internet
We provide easy-to-use alternatives to Big Tech services and their surveillance business models. With Proton, your data is protected, not exploited.