How to use
- Paste a timestamp; the unit is detected from its length.
- Or pick a date, time and time zone to get the timestamp.
Worked example
1700000000 is 2023-11-14T22:13:20Z.
Supported formats and limits
| Input | Timestamp, Date and time |
|---|---|
| Output | ISO 8601, RFC 2822, relative time |
| Engine | Intl.DateTimeFormat with IANA time zones; unit auto-detection |
Limitations
- Leap seconds are not represented in Unix time.
- Unit detection goes by digit count, so a seconds value far in the future can be mistaken for milliseconds; choose the unit if in doubt.
Questions
How is the unit chosen?
By the number of digits: up to 11 is seconds, 12 to 14 milliseconds, 15 to 17 microseconds and 18 to 20 nanoseconds. You can also choose the unit yourself. 1700000000 is 2023-11-14T22:13:20Z.
How are time zones and daylight saving handled?
A timestamp is a single instant, shown in UTC and in any IANA time zone. When converting a local time, a time skipped by clocks moving forward uses the next valid time, and a time that happens twice uses the earlier one, with a warning in both cases.
Guides
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