Calendar Event (.ics) Generator
Create downloadable .ics calendar invites with reminders that open in Apple Calendar, Outlook and Google Calendar, plus instant Google Calendar links.
Last reviewed by the Radiatus Cloud team
The .ics file opens in Apple Calendar, Outlook, Google Calendar and most other calendar apps. Times use your device's local time zone.
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Create a calendar invite file
An .ics file is a calendar event that opens in any calendar app, and creating one lets you share events reliably. This tool creates downloadable .ics calendar invites with reminders that open in Apple, Google and Outlook calendars.
Why .ics is the universal format
A calendar event shared as an .ics file works across every major calendar app, Apple, Google, Outlook, because .ics is the standard format they all understand. Generating one with the event details and a reminder means a recipient can add it to their calendar with one click, rather than manually creating the event from a description. This is ideal for event invitations, bookings, and reminders, since it removes the friction and the risk of the recipient entering the wrong date or time. The file encodes the event in the standard format so it imports correctly everywhere.
Add to any calendar
It runs entirely in your browser, so nothing you enter is uploaded and it works without an account, keeping your data on your own machine.
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Frequently Asked Questions
What is an .ics file?
The standard calendar event format that Apple, Google, Outlook and other calendar apps all understand, so an event shared as .ics works everywhere.
Why generate an .ics invite?
So a recipient can add the event to their calendar with one click, rather than manually creating it and risking the wrong date or time.
Can it include a reminder?
Yes. The event can include a reminder, so the recipient’s calendar alerts them ahead of time once the event is added.
Where is it useful?
Event invitations, bookings and reminders, wherever you want recipients to reliably add an event to their own calendar.
Is my data uploaded?
No. The generation runs entirely in your browser.
Privacy & Security
Runs entirely in your browser. No data is sent to any server.
How to Use
Enter the event title, times, location and an optional reminder, then download the .ics file or open it directly in Google Calendar.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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UtilityParse a User-Agent string into browser, engine, operating system and device. Explains why UA strings are unreliable and what to use instead.
QR Code Generator
UtilityGenerate QR codes for URLs, text, Wi-Fi and contact details. Adjustable error correction and size, produced entirely in your browser.
Credit Card Validator
UtilityValidate a card number with the Luhn algorithm and identify the issuing network from its prefix. Runs locally, nothing is transmitted.