Is Timestamp Converter free?

Yes, Timestamp Converter is completely free to use with no signup required.

Does Timestamp Converter send my data to a server?

No. Timestamp Converter runs entirely in your browser using client-side JavaScript. Your data never leaves your device.

Convert Unix timestamps in seconds or milliseconds to ISO, UTC, local, and relative time, entirely in your browser.

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Convert Unix timestamps (seconds/ms) to ISO, UTC, local, and relative time — and back.

Unix seconds

1792219082

Unix milliseconds

1792219082000

ISO 8601

2026-10-17T06:38:02.000Z

UTC

Sat, 17 Oct 2026 06:38:02 GMT

Local

10/17/2026, 6:38:02 AM

Relative

1 second ago