Developer

Unix Timestamp Converter

Debug timestamps with UTC, local, and ISO conversions. Processing stays on your device — no upload, no account.

How to use Unix Timestamp Converter

  1. Paste a Unix timestamp or pick a date.
  2. Toggle seconds vs milliseconds.
  3. Copy ISO or localized readouts; use Now for the current epoch.

Why use this free unix timestamp converter tool?

  • All processing happens locally in your browser. Your files are never uploaded to a server.
  • Seconds/ms toggle.
  • UTC and local views.
  • Live Now button.

Technical details

Unix time counts seconds (or ms) since 1970-01-01T00:00:00Z. JavaScript Date uses milliseconds internally; we normalize inputs carefully to avoid off-by-1000 mistakes common in logs.

Unix Timestamp Converter FAQ

Seconds or milliseconds?

Use the toggle. 13-digit values are usually ms; 10-digit are seconds.

Is anything uploaded?

No. All processing happens locally in your browser. Your files are never uploaded to a server.

Timezones?

UTC and your browser’s local timezone are both shown.

ISO 8601?

Yes - copy a standard ISO string for APIs.

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