Unix Timestamp Converter — Epoch to Date & Back Online Free
Convert Unix epoch timestamps to UTC, local, and ISO 8601 dates — or pick a datetime to get seconds and milliseconds. Live clock, relative time, and shareable links.
Also searched as: unix timestamp converter · epoch converter · epoch to date · timestamp to date online
Current time
Quick reference
| Event | Epoch (seconds) | Note |
|---|---|---|
| Unix epoch origin | 0 | 1 Jan 1970 00:00:00 UTC |
| Y2K | 946684800 | 1 Jan 2000 00:00:00 UTC |
| Today at midnight (local) | 1782930600 | 00:00:00 in your timezone |
How to Use
Step-by-step guide to get the most from this tool
- 1
Check current time
See live Unix seconds, milliseconds, UTC, and local time at the top.
- 2
Unix to human
Paste an epoch value to get UTC, local, ISO 8601, and relative time.
- 3
Human to Unix
Pick a date and time to get Unix seconds and milliseconds.
- 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.
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Frequently Asked Questions
Quick answers to common questions
What is a Unix timestamp?+
A Unix timestamp counts seconds (or milliseconds) 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 or milliseconds?+
Unix timestamps are usually in seconds (10 digits). JavaScript and many APIs use milliseconds (13 digits). This tool auto-detects values above 10,000,000,000 as milliseconds.
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.