Developer QR codes

Calendar event QR code generator

Event name

Location

Starts

Ends

Description

Version 5 · 45×45 · 71/84 bytes

Error correction

Higher levels survive more damage and make the code denser. M is the usual choice; use H only if the code will be printed small or partly covered.

Dark Light Margin

Local · UTC timestamps, no separators

What the code actually contains

BEGIN:VEVENT
SUMMARY:
LOCATION:
DTSTART:
DTEND:
DESCRIPTION:
END:VEVENT

Encodes a VEVENT block. Scanning offers to add the event to the phone’s calendar with the title, time and location filled in.

How to make a calendar event qr code

1 Fill in the fields. The code updates as you type.

2 Raise the error correction if it will be printed small or might get covered.

3 Download it as PNG for the web or SVG for print — SVG stays sharp at any size.

The date format is the awkward part and there is no way around it: iCalendar wants `YYYYMMDDTHHMMSSZ` with no separators, and the trailing Z means UTC. An event at 7pm Amsterdam time in September is 17:00 UTC, so the string is 20260901T170000Z. Omitting the Z means local time on the scanning device, which is occasionally what you want for an all-day event and usually not. Support is good on Android and more variable on iOS, where a VEVENT sometimes opens as a text preview rather than a calendar prompt — worth testing on both before printing anything.

Questions

What date format does it need? −

YYYYMMDDTHHMMSSZ with no separators. The trailing Z means UTC, so convert from local time first.

What if I leave off the Z? +

Does it work on iPhone? +

Will this QR code expire? +

Can I add a reminder or a repeat? +

Sources

ISO/IEC 18004 — QR code specification ZXing — barcode contents formats

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