Does this support seconds and milliseconds?

Yes. The tool detects whether your value is in seconds or milliseconds automatically.

What date formats can I enter?

You can paste Unix numbers or human-readable date strings supported by the browser Date parser.

Output includes localized formatting based on your browser timezone settings.

Convert Unix timestamps to human-readable dates and parse readable dates back to Unix values.

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Convert Unix epoch timestamps to readable dates and back—useful for JWT exp claims, logs, and API debugging.

1Enter either a Unix value or a human-readable date and the tool resolves both formats.
2Seconds and milliseconds are detected automatically to reduce formatting mistakes.
3The result includes ISO output and localized date formatting for quick debugging.

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