A LITTLE HELP FOR YOUR NEXT TASK
ISO Week Calendar Converter
Resolve an ISO week into Monday–Sunday dates and convert a date back to its week.
Private by design
Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.
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How to use ISO Week Calendar Converter
- Choose the planning range and settings, or try the working sample.
- Add or edit your entries, then generate the calendar.
- Review the dates, warnings and summary before exporting.
What are the limits of ISO Week Calendar Converter?
ISO weeks start Monday; week 1 contains January 4. ISO week-year can differ from the calendar year. Invalid week 53 is rejected. This does not change the locale’s preferred week numbering. Data stays in browser memory. No account connection, automatic storage, live holiday feed or background reminders. ICS exports must be imported into your own calendar app.