Unix タイムスタンプ変換
秒 / ms / µs / ns ⇄ ISO 8601 / RFC 2822 / ローカル
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Unix タイムスタンプ変換
A quick-fire timestamp converter. Paste seconds, milliseconds, microseconds, nanoseconds or any ISO / RFC 3339 string — we detect the unit and show all common formats simultaneously, plus a human-readable relative time. Useful for debugging logs, JWT exp claims and database datetime columns.
- Auto-detects s / ms / µs / ns
- ISO 8601 and RFC 2822 outputs
- Local time with timezone
- Human-readable relative time
- Now button to grab current epoch
- Runs locally
FAQ
How does unit detection work?
We compare the magnitude of the number to typical Unix epoch ranges: < 1e11 = seconds, < 1e14 = milliseconds, < 1e17 = microseconds, larger = nanoseconds.
Which timezone is the local time shown in?
The browser's reported timezone via Intl.DateTimeFormat. Use the ISO output for a stable, timezone-free representation.