ISO Week and Date Converter

Runs locally

Processing runs in your browser. Creating a result-sharing link is a separate, explicit action with its own storage notice.

Convert between calendar dates and ISO week dates.

Input and options

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Αποτέλεσμα

Usage and supported scope

ISO weeks start on Monday and week 1 contains the first Thursday. The ISO week-year can differ from the calendar year.

Tool input and output are processed in your browser. The tool does not upload or store input content. Closing the tab discards results. Required processing modules are downloaded on first use.

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