Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. Show ISO 8601, UTC, local time, and relative time.
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Current Unix Timestamp
1772142486
Timestamp to Date
Date to Timestamp
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Frequently Asked Questions
What is a Unix timestamp?▾
A Unix timestamp (epoch time) is the number of seconds since January 1, 1970, 00:00:00 UTC. It is used widely in programming to represent dates in a simple integer format.
What is the difference between seconds and milliseconds?▾
Unix timestamps in seconds have 10 digits (e.g., 1700000000), while milliseconds have 13 digits (e.g., 1700000000000). JavaScript uses milliseconds, while most Unix systems use seconds.
What is the Y2K38 problem?▾
On January 19, 2038, 32-bit Unix timestamps will overflow. Systems using 32-bit integers to store timestamps will wrap around to negative values. Most modern systems now use 64-bit integers.
What timezone does this tool use?▾
The tool shows both UTC and your local timezone. Unix timestamps are always in UTC. The local time display uses your browser timezone setting.