Skip to main content
Tool ReignTool Reign
DeveloperFinanceTextPDFImageAll categories
Tool ReignTool Reign

342 free online tools for developers, finance, and businesses. No signup required.

100% privateFree tools
Tool Reign - 280+ free browser tools. No signup. Your data stays private. | Product HuntTool Reign - 280+ free browser tools. No signup. Your data stays private. | Product HuntToolReign on PeerlistToolReign on Peerlist
Popular
JSON FormatterText EditorGST CalculatorEMI CalculatorWord CounterMerge PDFImage ResizerSIP CalculatorJWT Decoder
All Tools·Guides·Privacy Policy·Terms of Use·About·Contact

© 2026 ToolReign. All rights reserved.
· Made for 🌍 Everyone

HomeDeveloperUnix Timestamp Converter — Epoch to Date & Back Online Free
Developer

Unix Timestamp Converter — Epoch to Date & Back Online Free

Browser-Only

Convert Unix epoch timestamps to UTC, local, ISO 8601, and multiple timezones — or pick a datetime to get seconds, milliseconds, microseconds, and nanoseconds. Live clock, batch mode, and shareable links.

Also searched as: unix timestamp converter · timestamp converter · epoch converter · epoch to date · timestamp to date online

Live ClockBatch Modeµs & nsFree

Current time

Unix (seconds)
—
Unix (milliseconds)
—
Unix (microseconds)
—
Unix (nanoseconds)
—
UTC
—
Local
—

Quick reference

EventEpoch (seconds)Note
Unix epoch origin01 Jan 1970 00:00:00 UTC
Y2K9466848001 Jan 2000 00:00:00 UTC
Today at midnight (local)178638660000:00:00 in your timezone

How to Use

Step-by-step guide to get the most from this tool

  1. 1

    Check current time

    See live Unix seconds, milliseconds, UTC, and local time at the top.

  2. 2

    Unix to human

    Paste an epoch value to get UTC, local, ISO 8601, and relative time.

  3. 3

    Human to Unix

    Pick a date and time to get Unix seconds and milliseconds.

  4. 4

    Copy results

    Use the copy button on any output line, or share a link with teammates.

Features

What makes this tool stand out

⏱️

Live clock

Current epoch updates every second.

🔄

Bidirectional

Convert epoch to dates or dates to epoch.

🌐

UTC & local

See both timezone views instantly.

📋

One-click copy

Copy any output value to clipboard.

🔗

Shareable links

Encode inputs in the URL for easy sharing.

🔒

Private

100% client-side — nothing leaves your browser.

Related Tools

More free utilities you might find useful

📅
Cron Generator
Schedule expressions
🗝️
JWT Decoder
Decode exp/iat claims
🔑
UUID Generator
Generate unique IDs
🌐
Timezone Converter
Convert timezones

Frequently Asked Questions

Quick answers to common questions

What is a Unix timestamp?+

A Unix timestamp counts seconds (or milliseconds, microseconds, or nanoseconds) since 00:00:00 UTC on 1 January 1970 — the Unix epoch. It is timezone-independent and widely used in APIs, logs, and databases.

Seconds, milliseconds, microseconds, or nanoseconds?+

Unix timestamps are usually in seconds (10 digits). JavaScript uses milliseconds (13 digits). High-precision systems may use microseconds or nanoseconds — pick the input unit or use auto-detect.

What will the year 2038 problem cause?+

Systems storing Unix time as a 32-bit signed integer will overflow on January 19, 2038 at 03:14:07 UTC. Modern 64-bit systems are not affected, but legacy embedded systems may be.

Does this work offline?+

Yes. All conversion runs in your browser with the native Date object. No network requests are made.

What is ISO 8601?+

ISO 8601 is a standard datetime format like 2024-05-20T14:30:00.000Z. It is common in JSON APIs and configuration files.

Can I share my inputs?+

Click Share to copy a link with your current inputs encoded in the URL hash.

Your data is processed entirely in your browser. Nothing is sent to any server.