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Unix time
Seconds and milliseconds are told apart by the size of the number. The clock is this device’s time zone.
Why this exists
1700000000 in a log is seconds, and 1700000000000 is milliseconds. Reading the wrong width shifts the year by decades.
A date alone, such as 2024-01-02, is the start of that day.
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01How to use it
Paste a number under number to date. The size decides seconds or milliseconds.
Under date to number, pick a date and a time, or press now, start of today, or end of today.
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02What you get
1700000000 is read as seconds, with the same instant in ISO 8601 and UTC.
The card for right now refreshes its seconds and milliseconds every second.
Entered1700000000
Read as seconds Milliseconds of the same instant 1700000000000 -
03Worth knowing
An absolute value up to 9,999,999,999 is seconds. A longer integer of at most 13 digits is milliseconds, 16 digits is microseconds, and the rest is nanoseconds.
A day that does not exist, such as 2024-02-31, is not converted.
Questions
- QHow are seconds and milliseconds split?
- AIf the absolute value is at most 9,999,999,999, it is seconds. Longer values of at most 13 digits are milliseconds, 16 digits are microseconds, and the rest are nanoseconds.
- QIs the zone fixed to Korea?
- ANo. It is the zone set on this device. UTC and ISO 8601 stay the same everywhere.
- QWhat if I type only a date?
- A2024-01-02, 2024/1/2, and 2024.1.2 are midnight at the start of that day.