UNIX Timestamp to Date Converter
Convert a UNIX timestamp (seconds or milliseconds) into a readable date and time in JST or UTC, with the weekday and ISO 8601 string included.
Input
Input unit
Display time zone
Result
Result (JST)
Wed, 11/15/2023 07:13:20
Japan Standard Time (JST)
Wed, 11/15/2023 07:13:20
Coordinated Universal Time (UTC)
Tue, 11/14/2023 22:13:20
Weekday (JST)
Wed
| Japan Standard Time (JST) | 2023-11-15 07:13:20 (+09:00) |
|---|---|
| Coordinated Universal Time (UTC) | 2023-11-14 22:13:20 (+00:00) |
| ISO 8601 (UTC / Z) | 2023-11-14T22:13:20.000Z |
| Epoch seconds | 1,700,000,000 s |
| Epoch milliseconds | 1,700,000,000,000 ms |
How it works
- UNIX time is the number of seconds elapsed since January 1, 1970, 00:00:00 UTC. This tool accepts both seconds (10 digits) and milliseconds (13 digits) as input.
- Mixing up the seconds and milliseconds units gives a date that is off by a factor of about 1000. As a rule of thumb, typical APIs and logs use roughly 10-digit seconds and 13-digit milliseconds.
- You can switch the display time zone between Japan Standard Time (JST, UTC+9) and Coordinated Universal Time (UTC). The same UNIX value shows a 9-hour difference between JST and UTC.
- The result also shows the weekday and the ISO 8601 string (with a trailing Z), so you can use it directly for log investigation and data reconciliation.
- Pressing the Now button automatically fills the input with the current UNIX time in the selected unit.
- This tool does not support daylight saving time. JST is always calculated as a fixed offset (UTC+9) throughout the year.
Reviews
Tell us what you think of this calculator.
Write a review
Found an incorrect result or a problem? Turn this on to report it.
- Home
UNIX Timestamp to Date Converter