Free Calendar Event QR Code Generator
Before you print
How big should it be?
Rule of thumb: printed width ≥ scanning distance ÷ 10. Pick the surface above and the studio sizes the code for you, then checks the printed module size against what a press can actually hold.
Questions people actually ask
Their phone reads a standard iCalendar event and offers to save it. On iPhone it opens in Apple Calendar; on Android it opens in Google Calendar or whichever calendar app is set as default.
Times are stored in universal time (UTC), converted from the time you type, so the event lands at the right moment wherever it is scanned. All-day events are date-only and have no time zone at all.
Yes: pick anything from 5 minutes to a day before, and the saved event carries a built-in alert. The person scanning can still change it in their calendar app afterwards.
No. A static code contains the event itself, so reprints are needed for changes. The upside: it never expires and needs no server: the whole event lives inside the squares.
Completely: free forever, no signup, no watermark, any resolution. Print it on wedding invites, gig posters, or meetup flyers as much as you like.
Want the detail? How calendar event QR codes work The payload format, what scanners do with it, and where it breaks.