Convert Unix timestamps (seconds/milliseconds) ↔ Date & Time with millisecond precision.
We auto-clean input (spaces/commas removed) and detect seconds (10 digits) vs milliseconds (13 digits).
Tip: 13 digits is usually milliseconds.
Local uses your device timezone.
Result (DateTime)
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ISO 8601 (UTC)
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Unix (seconds)
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Unix (milliseconds)
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This input is based on your browser's local time. Milliseconds are supported.
UTC means the entered value is treated as a UTC time.
