Timestamp
Converter

A Unix timestamp is the number of seconds elapsed since January 1, 1970, 00:00:00 UTC (the Unix epoch). It is a universal, timezone-independent way to represent a moment in time.

Yes. The tool automatically detects whether the input is in seconds (10 digits) or milliseconds (13 digits) and converts accordingly.

Yes. Switch to date-to-timestamp mode, enter a date and time, and the tool outputs the corresponding Unix timestamp in both seconds and milliseconds.

Yes. Select any IANA timezone from the dropdown to see the timestamp displayed in that local time.

Unix timestamps in 32-bit signed integer form overflow on January 19, 2038 (the Year 2038 problem). JavaScript uses 64-bit floats so this tool supports dates well beyond 2038.