AddEvent's free AI-powered ICS File Generator turns event details into iCalendar (.ICS) files in seconds. No software needed, no account creation, no manual formatting required.
Trusted by over 400,000 companies worldwide, including Google, Microsoft, Salesforce, and HubSpot, AddEvent is the leading calendar marketing platform for event and appointment-driven businesses.
AddEvent’s ICS Generator offers three ways to create an ICS file:
When using our generator, review the event and schedule tiles for accuracy before clicking download. If any details need to be adjusted, make them in the editor and when ready, click “Download .ics File” to save. Open the file to import your events directly into your digital calendar of choice.
These .ics files are compatible with Google Calendar, Microsoft Outlook, Apple Calendar, Yahoo Calendar, and any other digital calendar application that supports the iCalendar format (which is the calendar standard for all digital calendars).
This tool is ideal for one-time event sharing. For teams managing recurring events and campaigns at scale, AddEvent's full platform offers Add to Calendar buttons and links, online RSVP collection, event and calendar landing pages, embeddable event and calendar widgets, and real-time calendar sync through Subscription Calendars.
| ICS Generator vs. AddEvent’s platform | ||
|---|---|---|
| Feature | Free ICS Tool | AddEvent Account |
| 1-click Add to Calendar | No | Yes |
| Add to Calendar Button or Link | No | Yes |
| Auto-Sync Calendar Updates | No | Yes |
| Event / Calendar Landing Pages | No | Yes |
| No-Code Calendar Widgets | No | Yes |
| Online RSVP Forms | No | Yes |
| Analytics | No | Yes |
Remove the ICS confusion and watch your attendance skyrocket
for events
Use Add to Calendar buttons and links to give your users a simple way to save your event to their calendars in seconds. Perfect for emails, websites, SMS, and social media.
for everywhere
Automatically created when you create events and calendars, landing pages include an Add to Calendar or Follow Calendar button, giving your attendees an easy way to add your events to their calendars.
About AddEvent: AddEvent is a calendar marketing platform created to make event sharing simple and reliable for businesses of any size, so no important moment is ever missed.
The platform powers Add to Calendar buttons, links, event landing pages, RSVP forms, Subscription Calendars, Embeddable Calendar widgets, and more - all SOC 2 Type II certified, GDPR-compliant, and CCPA-compliant. Our free ICS generator is a standalone tool built on the iCalendar standard (RFC 5545), the same open format used by Google Calendar, Microsoft Outlook, Apple Calendar, and Yahoo Calendar to exchange event data.
Unlike a static .ics file, AddEvent's Subscription Calendars keeps calendars in sync. When an event is updated, all attendees who followed the calendar will see the change automatically reflected in their calendar. Over 400,000+ organizations, including teams at Google, Microsoft, Salesforce, and HubSpot, rely on AddEvent to drive event attendance and reduce no-shows through friction-free calendar integration.
An ICS file, also known as an iCalendar or iCal file, is a universally supported calendar file format defined by the iCalendar standard (RFC 5545). It is used by Google Calendar, Microsoft Outlook, Apple Calendar, Yahoo Calendar, and virtually all modern calendar applications. An ICS file contains structured event data - including the event title, start and end date and time, location, description, and optional recurrence rules - in a plain-text format that any standards-compliant calendar program can read and import. ICS files are commonly used to share individual events, back up calendar data, or transfer events between different calendar platforms.
Yes. You can attach an ICS file to an email, share it via a direct download link, or distribute it through any file-sharing service. However, because many recipients are unfamiliar with how to import an ICS file into their calendar, we recommend using AddEvent's Add to Calendar button or link instead - these allow recipients to save your event with a single click, without needing to manually download or import a file.
ICS files are useful for sharing calendar events across different platforms, backing up event data, or transferring events between calendar applications. They work offline and require no account or external service. That said, for sharing events with a broad audience - such as in email campaigns or on a website - AddEvent's Add to Calendar buttons and links offer a significantly better user experience, since recipients do not need to know how to handle a file download.
An Add to Calendar button or link lets users save an event directly to their calendar of choice with a single click - no file download or manual import required. ICS files require the user to download the file and then know how to open or import it into their calendar application. Most people are unfamiliar with this process, which leads to significantly lower calendar adoption rates. Add to Calendar buttons and links remove this friction entirely and can be embedded in websites, emails, and anywhere else you share event information.
Yes. The ICS files generated by this tool are fully compatible with Google Calendar, Microsoft Outlook (both desktop and web versions), Apple Calendar, Yahoo Calendar, and any other calendar application that supports the iCalendar standard (RFC 5545). This includes virtually all modern calendar software across Windows, macOS, iOS, and Android.
No. The AddEvent ICS generator is entirely browser-based. You do not need to install any software, create an account, or download an app. Simply open the tool in your browser, enter your event details, and click the download button to receive your .ics file instantly.
You can enter event details manually - including title, start and end date, start and end time, location, and description - or upload a file or photo of a schedule to have the details filled in automatically using AI. Once the event looks correct, click "Download .ics File" to download the iCalendar file to your device. Open it to import the event directly into Google Calendar, Outlook, Apple Calendar, or any other compatible calendar application.
AddEvent does not store the event data you enter into the ICS generator. The tool processes your information in real time to generate the .ics file and does not retain it afterward. The generator is powered by the OpenAI API through a secure, AddEvent-owned account. For full details, see AddEvent's privacy policy.
