Unix Timestamp Converter
Convert Unix epoch timestamps to readable dates and back. Live clock, timezone support, seconds and milliseconds auto-detection.
Current Unix Timestamp
2026-04-24T16:42:04.735Z (UTC)
Timestamp → Date
Date → Timestamp
Quick Reference
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Free Unix Timestamp Converter Online
This free Unix timestamp converter converts epoch time to human-readable dates and back. Paste any Unix timestamp in seconds or milliseconds and get ISO 8601, formatted date, and relative time instantly.
All conversions happen locally in your browser — no data leaves your machine.
What this tool does
- Live Unix clock updated every second
- Auto-detect seconds vs milliseconds timestamps
- Convert timestamp to formatted date in any timezone
- Convert a date/time picker back to Unix seconds and milliseconds
- Show relative time (e.g. “5h 12m ago”)
- One-click copy for every output field
FAQ
What is a Unix timestamp?
A Unix timestamp counts the number of seconds elapsed since January 1, 1970 00:00:00 UTC (the Unix Epoch). It is timezone-independent and universally used in APIs, databases, and logs.
How do I tell seconds from milliseconds?
A 10-digit number is in seconds; a 13-digit number is in milliseconds. This tool detects it automatically.
Does this send my data anywhere?
No. Everything runs in your browser using the built-in JavaScript Date API.