Guide: Unix time & date converter
↑ Back to toolWhat is this tool?
Convert between Unix timestamps (seconds or milliseconds) and human-readable dates. View ISO 8601, RFC 2822, local strings, and per-timezone renditions across common regions. Buttons jump to “now” in seconds or ms; save and history help you reuse frequent conversions. Everything runs client-side with Intl and native Date—no server clock beyond your device.
Formats & timezones
Pick a zone (UTC, US/Eastern, Europe/London, Asia/Tokyo, etc.) to see how the same instant prints in that region. Remember: DST shifts are reflected via IANA names, but legislative changes can lag browser updates—double-check critical legal timestamps at the source authority.
How to use
- Paste epoch seconds or ms, or type an ISO-ish datetime string.
- Inspect derived formats; switch timezone rows as needed.
- Use Now (s) / Now (ms) for quick baselines.
FAQ
Seconds vs milliseconds?
10-digit Unix times are usually seconds; 13-digit values are milliseconds. The tool accepts both—watch the label in the UI.
Does it handle leap seconds?
JavaScript Date maps POSIX-style instants; leap-second edge cases follow your engine’s behavior—verify with an authoritative time source if required.
Related terms
Core: unix timestamp converter, epoch to date online, milliseconds since 1970, iso 8601 converter, timezone compare tool, utc to local time converter.
Ops: log line timestamp decode, jwt iat exp human read (pair with JWT decode).
Schedules: combine with Cron parser when correlating wall time with cron fields.
Similar tools
Conclusion
The time converter is your quick bridge between epoch numbers and localized strings—keep it next to cron and JWT tools for full incident triage.