Timestamp Converter
Convert between Unix timestamps and dates, showing seconds, milliseconds, ISO 8601, and UTC at once. Everything runs in your browser.
FAQ
Is my input sent to a server?
No. All conversion happens entirely in your browser and no data leaves your device.
How are seconds and milliseconds distinguished?
By digit count: 11 digits or fewer are treated as seconds, longer values as milliseconds.
Can I input a date string?
Yes. Enter an ISO string like 2023-11-14T22:13:20Z or any date your browser recognizes to convert it to a timestamp.
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