Timestamp Converter
Paste a Unix timestamp (seconds or milliseconds) to see it in UTC, your local zone and world clocks — or turn a date back into a timestamp.
| UTC | — |
|---|---|
| ISO 8601 | — |
| Local | — |
| New York | — |
| London | — |
| Tokyo | — |
| Relative | — |
How to use
- Watch the live panel for the current time in seconds and milliseconds — Copy grabs either form, Pause freezes the ticking.
- Paste a timestamp below — seconds and milliseconds are detected automatically — and read ISO, local, UTC and world-clock rows.
- Use the date picker to convert a date back into seconds and milliseconds, each with its own Copy button.
Frequently asked questions
How does the tool tell seconds from milliseconds?
Purely by length: a number with 13 or more digits is treated as milliseconds, anything shorter as seconds. That rule is exact for every timestamp since September 2001; for older millisecond values, convert the other direction (date → timestamp) instead.
Which time zones are shown?
Your device’s local zone plus UTC, New York, London and Tokyo, along with the raw ISO 8601 form. The zones cover the biggest trading-hour offsets; the ISO line is unambiguous anywhere else.
What is the "just now"-style line?
A relative reading of the timestamp against the current time — for example "3 days ago" or "in 2 months". It updates whenever you edit the input.
Why does the live panel matter?
It shows the current Unix time in seconds (the classic 10-digit form) and in milliseconds, ticking every second. Copy seconds or Copy milliseconds grabs a fresh timestamp without leaving the page, and Pause freezes the display so a value does not change while you paste it elsewhere.
Are dates converted with daylight saving time?
Yes. Time-zone rendering uses the IANA database in your browser, so New York shifts between EST and EDT correctly for the date in question.