Epoch converter — Unix time to human and back
Paste a Unix timestamp and read it as a date, or paste a date and get the timestamp. Seconds and milliseconds, UTC and your local time, all in your browser (0 uploads, works offline).
How to use it
- Enter your input in the field above.
- The result and its explanation appear instantly.
- Copy or Download the result.
FAQ
How do I convert a Unix timestamp to a date for free?
Paste the timestamp and the date appears instantly in ISO, UTC and your local time, computed in your browser with no upload. The tool auto-detects seconds vs milliseconds from the length, and you can paste an ISO date to get the timestamp back.
What is the difference between seconds and milliseconds?
Unix time is usually seconds since 1970, but JavaScript and many logs use milliseconds (1000× larger). This tool detects which you pasted from the number of digits, and shows both in the result.
Is my data uploaded?
No. The conversion runs locally and nothing is stored; it works offline.
Can I convert several timestamps at once?
Yes — tick "inspect one item per line" to convert a list of timestamps in one go.
Limits
Recognises 10-digit (seconds) and 13-digit (milliseconds) timestamps and ISO dates. Relative time is a snapshot at the moment you typed.
Related
The countdown maker counts down to a future date; the timezone planner compares a time across cities.
Bookmark this page (Ctrl+D, or ⌘D on Mac) or install the app — it works offline the next time you need it.