A Unix timestamp is the number of seconds, or sometimes milliseconds, since 1970-01-01T00:00:00Z. That origin is the Unix epoch. The integer is UTC, not a local wall clock. If the number has about 10 digits, it is usually seconds. If it has about 13 digits, it is usually milliseconds. Mixing those units by a factor of 1000 is how a date lands in 1970 or in the year 50,000.
The Timestamp Generator snapshots the current instant as seconds, milliseconds, and ISO 8601 UTC. From Unix seconds accepts a whole number of seconds and writes the UTC ISO form. It does not accept milliseconds in that field. This guide is unix timestamps explained so you pick the unit before you paste.
The epoch is midnight UTC on 1 January 1970. Unix seconds 0 is 1970-01-01T00:00:00.000Z. Negative whole seconds name instants before 1970. Some databases reject those. The YallaSolve page will still show the ISO form when the integer is in range. Whether you should store a negative value is a schema question, not a generator question.
Unix time ignores leap seconds as civil clocks treat them. The page does not apply a leap-second table. For ordinary application timestamps that is the usual POSIX count. If you needed a time scale that includes leap seconds, this guide is the wrong document.
2023-11-14T22:13:20.000Z.JavaScript’s Date.now() returns milliseconds. Many databases and APIs store seconds. Write the unit next to the number. “1700000000 seconds” and “1700000000000 milliseconds” are the same instant. “1700000000 milliseconds” is 20 January 1970.
Extremely large integers whose absolute value is above 1×1011 are refused so the Date object stays usable. That bound is documented on the tool. The ISO row always includes milliseconds and a Z. Some APIs want seconds only as an integer; use Copy seconds. Some APIs want milliseconds; read the milliseconds row instead of multiplying in your head and dropping a zero.
A local time of 2024-01-15 12:00 in a UTC+4 browser is 2024-01-15T08:00:00.000Z. The same civil clock in another zone is a different instant. The page will not apply “America/New_York” or any other zone name you type. There is no zone list on purpose. Time-zone conversion is a different product.
This is not a duration calculator and not an age calculator. Those pages count spans. This page names an instant. If the job was “how many nights between two dates,” use the Date Difference Calculator. If the job was “22:15 to 06:45,” use the Time Duration Calculator. Do not glue those jobs onto a Unix integer and call it a timestamp.
Write a labeled sentence: “1700000000 Unix seconds,” “1700000000000 milliseconds,” or “2023-11-14T22:13:20.000Z.” Unix timestamps explained is finished when the unit and the calendar date can be checked against each other. A bare 13-digit integer in a ticket is not finished. If a teammate later multiplies seconds by 1000 and stores that as seconds, the next reader will land in the wrong century. Keep the unit in the column name or the comment, not only in the integer.
Yes. Unix time is seconds since the UTC epoch, not a local wall clock.
No. That field expects whole seconds. Now still shows a milliseconds row for the snapshot.
No. Local means this browser’s zone only. There is no IANA picker.
1970-01-01T00:00:00.000Z, the Unix epoch.