Timestamp Converter
Convert Unix timestamps to dates and back — with seconds/milliseconds auto-detection, UTC, local time and Japan time.
Timestamps and dates you enter are converted in your browser and never sent to a server.
Detected: converting as Seconds.
Current time
- Unix seconds
0- Unix milliseconds
0- ISO
1970-01-01T00:00:00.000Z
Result
2023-11-14T22:13:20.000Z
3 years ago
- Unix seconds
1700000000- Unix milliseconds
1700000000000- UTC
2023-11-14 22:13:20 UTC- Local
11/14/2023, 22:13:20 UTC- Japan time
11/15/2023, 07:13:20 GMT+9- RFC 2822
Tue, 14 Nov 2023 22:13:20 GMT
What is this tool?
A free Unix timestamp converter. Paste a timestamp to see the corresponding date, or enter a date to get its Unix time in seconds and milliseconds. A live clock shows the current time in Unix, ISO 8601 and more.
How to use
- Choose a direction: Unix → Date or Date → Unix.
- Enter a timestamp (unit is auto-detected) or a date/time (local or ISO 8601).
- Copy any result row with its Copy button.
Use cases
- Checking timestamps from server logs or API responses.
- Converting Date.now() values for debugging.
- Getting the current Unix time for scripts and CLI tools.
Notes
- Dates are limited to the range JavaScript Date can represent.
- All processing happens locally in your browser.
FAQ
How are seconds and milliseconds detected?
In auto-detect mode, values with 13 or more digits (or absolute values of 100 billion or more) are treated as milliseconds; smaller values are treated as seconds.
Which time zones are shown?
Results are shown in UTC, your browser's local time zone and Japan time (JST), plus ISO 8601 and RFC 2822 formats.
Is my input sent to a server?
No. All conversions run locally in your browser.
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