Convert Unix Timestamps Online
Convert between Unix time and human-readable dates instantly, with a live ticking clock and both directions covered.
Current Unix Time
Timestamp → Date
Date → Timestamp
About the Timestamp Converter
Convert Unix timestamps to human-readable dates and back, right in your browser. Watch the current epoch time tick live, auto-detect seconds vs. milliseconds, and get local time, UTC, and relative time for any timestamp.
Features:
- Live-ticking current Unix timestamp in seconds and milliseconds
- Auto-detects seconds vs. milliseconds, with a manual override
- Local time, UTC (ISO 8601), and relative time for any timestamp
- Date-to-timestamp conversion with a one-click 'now' button
How to Convert a Timestamp
- Paste a Unix timestamp to see its local time, UTC time, and relative time
- Toggle the unit if auto-detection picks the wrong one
- Or pick a date and time to get its Unix timestamp in seconds and milliseconds
- Click any result to copy it to your clipboard
Frequently Asked Questions
Is this timestamp converter free to use?
Yes. Converting timestamps is completely free with no limits or sign-up required.
What is a Unix timestamp?
A Unix timestamp is the number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC, known as the Unix epoch.
Is my data sent to a server?
No. All conversions happen locally in your browser using JavaScript's Date object — nothing is uploaded or stored.
Should I store timestamps in seconds or milliseconds?
Unix time is traditionally measured in seconds, and most databases and APIs (like PostgreSQL's epoch or Python's time.time()) use seconds. JavaScript's Date.now() uses milliseconds instead. Pick whichever your stack already uses consistently, and this tool auto-detects which one you've pasted based on its length.
Why does my timestamp show a slightly different time after conversion?
Timestamps have no timezone of their own — they're just a count of seconds since the epoch. The local time shown reflects your device's timezone setting, while the UTC value is timezone-independent. If the local time looks off, check your system clock and timezone.
Why does the same timestamp show a different date for my colleague?
A Unix timestamp represents one exact moment in time, but 'local time' depends on the viewer's timezone. If you're in New York and your colleague is in Tokyo, the same timestamp can fall on different calendar dates for each of you. Always compare the UTC value if you need a timezone-independent reference.
Privacy
All conversions happen locally in your browser using JavaScript's built-in Date object. No timestamp or date is ever uploaded or stored.