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TOOL · 53 · Data & Utility

Unix Timestamp Converter

Convert Unix timestamps (seconds or ms) to and from ISO 8601 and human-readable dates.

In short
Unix Timestamp Converter converts between Unix timestamps (seconds or milliseconds) and ISO 8601 / human-readable dates — with a live current-time reference.

Processed 100% in your browser — your files never leave your device.

Live current time

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How it works

  1. Step · 01

    Type a Unix timestamp (seconds or milliseconds) or an ISO date — both sides stay in sync.

  2. Step · 02

    The current time updates live, so you can grab a fresh timestamp with one click.

  3. Step · 03

    Everything is computed locally in your browser.

Frequently asked questions

Seconds or milliseconds?
The tool auto-detects: values with 10 or fewer digits are treated as seconds, longer values as milliseconds.
Does it handle time zones?
The ISO output is UTC. The 'Local' line shows the same instant in your browser's time zone.
Are my files uploaded to a server?
No. Files are processed directly in your browser using JavaScript and WebAssembly. Nothing is uploaded to our servers, so your documents never leave your device.
Does it work on mobile?
Yes. The tools run in any modern browser on desktop, tablet, or mobile (Chrome, Edge, Safari, Firefox). Very large files may be slower on low-end phones.

Read the guide

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