ISO 8601 converter
Parse an ISO 8601 timestamp to Unix time and local date-time in your browser. Nothing is uploaded.
Fill one field, then Convert. Values over 1e12 are treated as milliseconds.
How to use the ISO 8601 converter
- Paste an ISO 8601 value (…Z or an offset).
- Click Convert.
- Read Unix seconds, milliseconds, and the local row.
What parses
The browser Date parser accepts the usual ISO 8601 forms. Offsets other than Z are converted to UTC for the ISO output. This is the same engine as the Unix converter, with copy aimed at API timestamps instead of epoch logs.
Nothing is uploaded
Parsing is local.
ISO 8601 converter FAQ
Missing Z?
A value without a zone is treated as local in this browser.
Need Unix first?
Use the Unix timestamp converter.