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UTC Calendar Event ICS Builder

Generate an RFC-style calendar event using explicit UTC times and an identifier.

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A useful toolkit for text, data, images and calculations.

  1. 01

    Add your input

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  2. 02

    Make it yours

    Adjust the options and run the action.

  3. 03

    Take the result

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UTC Calendar Event ICS Generator online

Generate an RFC-style calendar event using explicit UTC times and an identifier. Use this when inspecting structured input or preparing a data or code artifact. Generated commands and configurations remain text until you review and use them yourself.

How to use it

Paste JSON matching the structure in the example. Choose Run tool. Review the output, then copy or download it.

Worked examples

Use this when inspecting structured input or preparing a data or code artifact. Generated commands and configurations remain text until you review and use them yourself.

Reproducible worked example

Settings: No additional settings.

Input:

{"title":"Project review","start":"2026-10-20T10:00:00Z","end":"2026-10-20T11:00:00Z","location":"Online","uid":"[email protected]"}

With the input and settings above, the tool produces:

Output:

BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Kirikuba//Event Builder//EN
BEGIN:VEVENT
UID:[email protected]
DTSTAMP:20261020T100000Z
DTSTART:20261020T100000Z
DTEND:20261020T110000Z
SUMMARY:Project review
LOCATION:Online
END:VEVENT
END:VCALENDAR

The example output has 12 lines. Compare its order, separators and whitespace with the input before copying the result.

Limitations and common mistakes

  • Creates one UTC event. Recurrence, alarms and local timezone definitions are not included.
  • Combined input is bounded to 150,000 characters; output text is bounded to 1.2 million characters. Some algorithms impose smaller limits, stated in their error messages.

Frequently asked questions

What format should I enter?

Paste JSON matching the structure in the example. The worked example shows the supported structure and actual output.

How can I create an RFC-style calendar event online?

Paste JSON matching the structure in the example. Choose Run tool. Review the output, then copy or download it.

Technical references

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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