Enter a Unix timestamp or ISO date. The page detects seconds versus milliseconds and shows UTC plus your browser local time.
Epoch Converter
Enter a timestamp or ISO date to convert it.
Result
- UTC time
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- Local time
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- Epoch seconds
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- Epoch milliseconds
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Timezone and DST notes
UTC is stable for logs and APIs. Local time depends on your browser timezone, including daylight saving transitions.
FAQ
How do I know if a timestamp is seconds or milliseconds?
Most 10-digit values are seconds and 13-digit values are milliseconds. Auto detect follows that rule and shows both outputs.
Can I paste ISO 8601 dates?
Yes. Dates such as 2026-05-02T12:00:00Z are parsed by the browser and converted to Unix seconds and milliseconds.
Why does local time differ from UTC?
Local time applies your device timezone and daylight saving rules. Use UTC when you need portable logs or API values.