How to convert between Unix timestamps and ISO dates

1. Paste a timestamp or date

   Type into the Value field: a 10-digit Unix seconds value, a 13-digit Unix milliseconds value, or any ISO date string (e.g. 2026-05-20T14:00:00Z). Leading/trailing whitespace is trimmed.

2. Pick a display timezone

   Localized display (IANA zone) accepts UTC, Europe/London, Europe/Paris, America/New_York, America/Los_Angeles, Asia/Dubai, Asia/Tokyo, or Australia/Sydney. Only the localized rendering changes — the underlying instant does not.

3. Press Run

   The tool detects whether your input is interpretedAs unix_seconds / unix_milliseconds / date_string and reports it back so you can confirm parsing.

4. Read all output forms

   Result returns iso (UTC), unixSeconds, unixMs, displayTimeZone, and localizedInZone (full date + long time in your chosen zone). Copy whichever form your downstream system expects.