Unix Timestamp Converter
✓ Link copiedConvert Unix timestamps to human-readable dates and back, right in your browser. Paste an epoch value in seconds or milliseconds — the unit is detected automatically, or you can set it explicitly — and instantly see the matching local time, UTC, ISO 8601, and a relative "time ago" description. Go the other way too: pick any date and time to get its Unix timestamp in both seconds and milliseconds. A live clock shows the current Unix time, updating every second, and every value is one click to copy. Free, fast, and completely private — every conversion happens on your device and nothing is ever uploaded.
Current Unix time
Reading the clock…
Timestamp → Date
Date → Timestamp
Interpreted in your local time zone.
How to use
To turn a timestamp into a date, paste it into the Unix timestamp box. Leave the unit on Auto-detect or choose Seconds or Milliseconds explicitly, then read off the local, UTC, ISO 8601, and relative forms — click any value to copy it. To turn a date into a timestamp, pick a date and time in the Date → Timestamp section (interpreted in your local time zone) and copy the resulting seconds or milliseconds. The Current Unix time panel shows the live epoch, updating every second.
Frequently asked questions
- What's the difference between seconds and milliseconds?
- A classic Unix timestamp counts whole seconds since 1 January 1970 UTC and is 10 digits for current dates; many systems (including JavaScript) use milliseconds instead, which is 13 digits. This tool auto-detects which you pasted — values of about a trillion or more are treated as milliseconds — and you can always override the unit manually.
- Which time zone are the dates shown in?
- Timestamps are shown both in UTC and in your browser's local time zone, so you can read whichever you need. When you convert a date back to a timestamp, the date and time you pick are interpreted in your local time zone. A Unix timestamp itself has no time zone — it always refers to the same instant worldwide.
- Is my data sent anywhere?
- No. Every conversion runs locally in your browser using its built-in date APIs. Nothing you enter is transmitted, logged, or stored on any server.