Convert between UTC, local time, and Unix timestamp
Enter any timestamp format or use current time
Select input format or let it auto-detect
Copy any converted format you need
Supports Unix, ISO 8601, RFC 2822, and natural language
Automatically detects input format for easy conversion
Shows time in popular timezones around the world
A: Unix timestamps (seconds/milliseconds), ISO 8601, RFC 2822, and natural language like 'yesterday', '2 hours ago', etc.
A: Very accurate! We use the browser's built-in timezone database which is regularly updated and follows IANA timezone standards.
A: Yes! You can convert any date/time, past or future. Just enter the timestamp in any supported format.
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Convert between UTC, local time, and Unix timestamp
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Convert between UTC, local time, and Unix timestamp
Enter any timestamp format or use current time
Select input format or let it auto-detect
Copy any converted format you need
Supports Unix, ISO 8601, RFC 2822, and natural language
Automatically detects input format for easy conversion
Shows time in popular timezones around the world
A: Unix timestamps (seconds/milliseconds), ISO 8601, RFC 2822, and natural language like 'yesterday', '2 hours ago', etc.
A: Very accurate! We use the browser's built-in timezone database which is regularly updated and follows IANA timezone standards.
A: Yes! You can convert any date/time, past or future. Just enter the timestamp in any supported format.
Convert Unix epoch timestamps to human-readable dates and times, or convert any date and time back to a Unix timestamp. Supports both seconds and milliseconds, and shows UTC alongside your local timezone.
What is a Unix timestamp?
A Unix timestamp is the number of seconds (or milliseconds) elapsed since January 1, 1970, 00:00:00 UTC (the Unix epoch). It is a standard way to represent points in time in software.
Does my timestamp use seconds or milliseconds?
Unix timestamps are typically in seconds (10 digits in 2025). JavaScript uses milliseconds (13 digits). The tool auto-detects based on value size.
What is the maximum date a Unix timestamp can represent?
32-bit signed Unix timestamps can represent dates up to January 19, 2038 (the Year 2038 problem). Modern systems use 64-bit which extends this to hundreds of billions of years.
Why does my timestamp show a different time than expected?
Unix timestamps are in UTC. If your local timezone is different, the displayed local time will be offset. The tool shows both UTC and local time to avoid confusion.