Date to Unix Timestamp Converter
Convert any date, time, and time zone (JST/UTC) into a Unix timestamp (epoch seconds) starting from January 1, 1970. Milliseconds, ISO 8601, and the UTC equivalent are shown at the same time.
Last updated:
Input
2026/06/25
Time zone of the entered date and time
Result
Unix time (epoch seconds)
1,782,313,200sec
Milliseconds (×1000)
1,782,313,200,000 ms
UTC date and time
2026/06/24 15:00:00
Input time zone
JST
| Unix seconds (epoch seconds) | 1782313200 |
|---|---|
| Unix milliseconds | 1782313200000 |
| ISO 8601 (UTC) | 2026-06-24T15:00:00.000Z |
| UTC date and time | 2026/06/24 15:00:00 |
How it works
- Unix time expresses a moment as the number of seconds elapsed since 00:00:00 on January 1, 1970, in Coordinated Universal Time (UTC). It is a standard format widely used for handling dates and times in programs and databases.
- Enter a date and time, then choose whether that moment is Japan time (JST, UTC+9) or UTC, and the matching Unix seconds are calculated. When Japan time is selected, nine hours are subtracted internally to convert it to a UTC baseline.
- Alongside the main Unix seconds result, the tool shows the value multiplied by 1000 in milliseconds, the ISO 8601 format (with the trailing Z), and the date and time converted to UTC, so you can use whichever fits your needs.
- Time can be specified down to the second, not just hours and minutes. If you omit the seconds, they are treated as zero. This is useful for API testing and matching log timestamps.
- Japan time (JST) is calculated as a fixed UTC+9 with no daylight saving time. Note that historical times and time zones for other regions are not supported.
Frequently asked questions
- How does it convert a date into a Unix timestamp?
- It counts the seconds elapsed since 00:00:00 UTC on January 1, 1970. If you select JST as the input time zone, it first subtracts 9 hours to convert your time to UTC, then computes the seconds.
- Which tool do I use to turn a Unix timestamp back into a date?
- This tool only converts from a date to Unix time. To turn a Unix timestamp back into a readable date and time, use the inverse tool, the Unix-time-to-date converter.
- Can I specify seconds, and does it show milliseconds?
- You can set hours, minutes, and seconds; if seconds are omitted they are treated as 0. Besides Unix seconds, the result also shows milliseconds (times 1000), ISO 8601 format, and the equivalent UTC date and time.
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