Unix Timestamp Converter Online

Convert between Unix timestamps and human-readable dates. Handles seconds, milliseconds, and ISO 8601 formats.

Seconds: 1784830847

Milliseconds: 1784830847000

ISO 8601: 2026-07-23T18:20:47Z

How to Use

  1. 1

    Enter timestamp or date

    Input a Unix timestamp (seconds or ms) or pick a date/time.

  2. 2

    Convert

    See the result in both timestamp and human-readable formats.

  3. 3

    Copy

    Copy the converted value.

FAQ

What is a Unix timestamp?

A Unix timestamp (epoch time) is the number of seconds elapsed since January 1, 1970 00:00:00 UTC. It provides a universal, timezone-independent way to represent a moment in time.

Seconds vs milliseconds — how do I tell the difference?

If the number is ~10 digits (e.g., 1719849600), it is in seconds. If ~13 digits (e.g., 1719849600000), it is in milliseconds. JavaScript Date.now() returns milliseconds; most APIs use seconds.