Unix timestamp converter
Convert a Unix timestamp to a date and time, or convert a local date back to Unix time. Choose seconds or milliseconds and an IANA time zone. Conversion runs in your browser and the default result uses UTC.
| UTC (ISO 8601) | |
|---|---|
| Local date and time | |
| Unix seconds | |
| Unix milliseconds |
Frequently asked questions
What is a Unix timestamp?
It counts seconds since 1970-01-01 00:00:00 UTC. A timestamp identifies the same instant in every time zone; leap seconds are not counted separately.
How do seconds and milliseconds differ?
One second equals 1,000 milliseconds. Choose the unit explicitly; modern timestamps commonly have 10 digits in seconds or 13 in milliseconds.
What happens during daylight saving changes?
A local time skipped by a clock change is rejected. When a local time occurs twice, the earlier instant is selected and a notice is shown.
Is the original Unix clock still available?
Yes. The Unix timestamp page shows the running clock, while this converter works with a specific instant you enter.