Unix Timestamp Converter
Convert Unix seconds to UTC dates and turn a date into a timestamp.
A Unix timestamp represents seconds since 1 January 1970 UTC.
What this tool does
Unix timestamps count elapsed seconds or milliseconds from 1 January 1970 in UTC. This converter helps identify the unit and read the corresponding date; the displayed local time may differ from UTC depending on your device time zone.
How to use it
Enter the values requested by the calculator and check the result together with the notes shown below it.
Practical example
Use a realistic example from your own setup to compare scenarios. The result is a reference, not a replacement for manufacturer specifications.
How to interpret the result
Treat the result as an estimate whenever real-world factors are not available to the browser. For hardware, network or safety decisions, verify the relevant technical specifications.
Frequently asked questions
What is a Unix timestamp?
It is the number of seconds elapsed since 1 January 1970 at 00:00 UTC.
Why do my local time and UTC differ?
Local time applies your time zone and daylight saving, while UTC is a common reference with no offsets.