RRule Converter

Convert RRULE (iCalendar recurrence rules) into a list of human-readable dates with timezone support.

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< 15ms

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100%

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4.9 / 5.0

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About This Tool

The RRULE Converter is a powerful online tool that parses RRULE strings (as defined in the iCalendar RFC 5545 standard) and generates a list of occurrence dates. It supports complex recurrence patterns including frequency (daily, weekly, monthly, yearly), interval, count, until date, byday, bymonthday, and more. You can input an RRULE string, set a start date, and optionally limit by end date or count. The tool also includes a date picker for manual date selection and a timezone selector to convert dates to your local timezone. All processing is done client-side using the rrule.js library, ensuring fast and secure conversions without server calls.

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How to Use

Enter an RRULE string (e.g., 'FREQ=WEEKLY;INTERVAL=2;BYDAY=MO,WE,FR').
Set the start date using the date picker.
Optionally, set an end date or limit the number of occurrences.
Select a timezone for date conversion.
Click 'Convert RRULE' to generate the list of dates.
View the results in a formatted table below.

Frequently Asked Questions

Find Quick Answers

What is an RRULE?

RRULE (Recurrence Rule) is a standard format defined in iCalendar (RFC 5545) for specifying recurring events in calendars. It uses parameters like FREQ, INTERVAL, BYDAY, etc., to describe patterns such as 'every Monday and Wednesday'.

Does this tool support all RRULE parameters?

Yes, it supports all standard RRULE parameters including FREQ, INTERVAL, COUNT, UNTIL, BYDAY, BYMONTHDAY, BYMONTH, BYSETPOS, and WKST, using the rrule.js library for comprehensive parsing.

Can I convert dates to a different timezone?

Yes, the tool includes a timezone selector that converts all generated dates to the selected timezone, making it easy to view occurrences in your local time.

Is my data secure?

All processing is done client-side in your browser. No data is sent to any server, ensuring complete privacy and security for your recurrence rules and dates.

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