Event QR Code Generator

Add an Event to Someone's Calendar with a Single Scan

An event QR code encodes a calendar entry in iCalendar format — the open standard used by Google Calendar, Apple Calendar, Outlook, and virtually every other calendar application. When someone scans the code, their phone offers to add the event to their calendar. Title, date, end time, and location all transfer automatically. The person confirms, and the event is saved without any manual typing.

This removes the friction between telling someone about an event and actually getting it into their schedule. Invitations get lost, verbal details are forgotten, and handwritten notes disappear. A scannable calendar event creates a direct path from physical material to a saved calendar entry.

What iCalendar Format Is

iCalendar (RFC 5545) is the universal standard for event data exchange between calendar apps. The .ics file you receive when you accept a Google Calendar invite, the event file attached to a conference registration email, the calendar appointment created when you click "Add to Calendar" on a website — all of these are iCalendar format.

The data inside an event QR code looks like this:

BEGIN:VCALENDAR
VERSION:2.0
BEGIN:VEVENT
SUMMARY:Team Meeting
DTSTART:20250915T090000
DTEND:20250915T100000
LOCATION:Conference Room B
END:VEVENT
END:VCALENDAR

When scanned, the phone's camera recognizes the BEGIN:VCALENDAR structure and offers to add the event to the default calendar app. This works natively on iOS and Android with no app installation required.

Where Event QR Codes Are Actually Used

Printed invitations and event stationery. Wedding invitations, birthday party cards, and corporate event invitations can include a QR code that lets guests add the event to their calendar directly from the card. This is significantly more reliable than asking guests to write down the date or trusting they will remember to enter it later.

Conference programs and schedules. Printed conference booklets and session guides can carry QR codes for individual sessions or workshops. Attendees scan the sessions they want to attend and have them saved in their calendar with the time and room number, without copying anything by hand.

Trade show and exhibition materials. Exhibitor booths and banners can display a QR code for their scheduled presentations, product demos, or speaking sessions. Visitors scan and save, reducing the chance that an interested person forgets to show up.

Venue and hospitality signage. Hotels, event spaces, and corporate campuses use event QR codes on lobby displays, room signage, and welcome materials to help guests add recurring events, scheduled activities, or check-out reminders to their calendars.

Classroom and academic settings. Teachers and professors can include QR codes on printed course materials for exam dates, assignment deadlines, and important academic events. Students scan once and have the dates saved automatically, reducing the "I forgot when it was" problem.

Date and Time Formatting

iCalendar uses a specific date and time format: YYYYMMDDTHHMMSS. September 15, 2025 at 9:00 AM is written as 20250915T090000. This tool handles the formatting automatically from the date pickers, so you do not need to write raw iCalendar syntax.

Times in iCalendar are typically specified in local time or UTC. If your event spans multiple time zones — a virtual event with global participants, a conference call between offices — specifying UTC (appending Z to the time, like 20250915T140000Z) ensures everyone's calendar shows the correct local equivalent. For local in-person events, local time without timezone specification is standard practice.

All-Day Events vs. Timed Events

iCalendar distinguishes between all-day events and events with specific start and end times. An all-day event uses a date-only format (DTSTART;VALUE=DATE:20250915) rather than including a time component. Most calendar apps display these differently: timed events appear as blocks in the time grid, all-day events appear as banners at the top of the day.

For events with a specific time — a meeting, a presentation, a performance — always specify both start and end times. This gives calendar apps enough information to correctly block the time and send reminders. An event with no end time is valid iCalendar but may behave inconsistently across different calendar apps.

Event QR Codes vs. Calendar Sharing Links

Google Calendar and Outlook both offer shareable event links that open in the respective app or web interface. These work well for digital sharing but depend on the recipient using the same platform or having an account. An iCalendar event QR code works with any calendar app on any platform, with no account or platform lock-in.

For events you want to reach people across platforms — a printed invitation going to people who use Google Calendar, Apple Calendar, and Outlook — the iCalendar QR code is the most universally compatible option.

Your Event Data Stays in Your Browser

The event title, dates, and location you enter here are used to generate the iCalendar string and QR code entirely within your browser. Nothing is sent to any server. The QR code image exists only in your browser session until you download it. Close the tab and the data is gone.