Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. Live current time in seconds and milliseconds, local and UTC at a glance, with ISO 8601 and relative time output.
The top panel ticks the current Unix time once per second in both seconds and milliseconds — copy either with a click. Below, two converters work in opposite directions: feed it a Unix timestamp (auto-detect seconds or milliseconds) to see the same instant in your local time zone, in UTC, in ISO 8601, the weekday, and a human-readable relative phrase. Or type a date in YYYY-MM-DD HH:MM:SS form to get the timestamp in both seconds and milliseconds.
Everything is computed locally in your browser using Intl.DateTimeFormat and Intl.RelativeTimeFormat for native locale formatting.
Current time
— — Timestamp → Date
- Local
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- UTC
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- ISO 8601
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- Weekday
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- Relative
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Date → Timestamp
- Seconds
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- Milliseconds
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- ISO 8601
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