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Version: 3.1.0

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Date & Time Tools

Unix Timestamp Converter

Free Unix timestamp converter — convert epoch seconds or milliseconds to human-readable dates and back.

Unix timestamp converter

Auto-detects seconds, milliseconds & microseconds.

Scale:
ISO 8601 (UTC)

2026-06-10T12:22:00.000Z

UTC

Wed, 10 Jun 2026 12:22:00 GMT

Local

Wed Jun 10 2026 14:22:00 GMT+0200 (Central European Summer Time)

Relative

just now

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Overview

About Unix Timestamp Converter


The QuickToolz Unix Timestamp Converter translates Unix epoch timestamps (seconds or milliseconds) into human-readable dates in your local time and UTC — and vice versa. Auto-detects seconds vs milliseconds and supports any year from 1970 onward.

What is a Unix timestamp

A Unix (or POSIX) timestamp is the number of seconds elapsed since 1 January 1970 00:00:00 UTC. It’s the universal time representation in Linux, databases, log files, JSON APIs, and many languages. Milliseconds are common in JavaScript (Date.now()).

Features

What makes Unix Timestamp Converter great

Everything you need, nothing you don’t. Built for speed and simplicity.


  • Seconds & milliseconds

    Auto-detect or toggle the unit.

  • Local + UTC display

    Both time zones shown side-by-side.

  • Bidirectional

    Timestamp → date or date → timestamp.

How to use

Get started with the Unix Timestamp Converter in just seconds.

Everything you need, nothing you don’t. Built for speed and simplicity.


  1. 01

    Paste a timestamp

    Drop in epoch seconds or milliseconds — we auto-detect.

  2. 02

FAQ

Frequently asked questions about Unix Timestamp Converter.

Got questions? We’ve got answers. Common questions about Unix Timestamp Converter.


You probably pasted seconds when the system expects milliseconds (or vice versa). Toggle the unit or rely on auto-detect.

Signed 32-bit Unix timestamps overflow on 19 January 2038. Modern systems use 64-bit timestamps and are unaffected.

Yes — negative timestamps represent dates before 1 January 1970 UTC.

Or pick a date

Use the date picker to convert in the other direction.

  • 03

    See local + UTC

    Both your local time and UTC update live.