Unix Timestamp Converter
Convert Timestamp to Date
Convert Date to Timestamp
What is a Unix Timestamp?
A Unix timestamp (also called Epoch time or POSIX time) is the number of seconds that have elapsed since 00:00:00 UTC on January 1, 1970 (the Unix epoch). It's the universal standard for representing moments in time in computing — used in databases, APIs, log files, JWT tokens (exp and iat fields), HTTP headers (Last-Modified, Expires), file system metadata, and most programming languages' datetime libraries. Timestamps are timezone-independent: the same number represents the same moment everywhere in the world, with timezone conversion handled at display time. Current Unix timestamps are 10-digit numbers around 1,700,000,000.
How to Use the Timestamp Converter
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Enter a Unix timestamp (e.g. 1700000000) to see the equivalent human-readable date and time.
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Or enter a date and time to get the corresponding Unix timestamp.
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The current Unix timestamp is shown and updates in real time.
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Times are displayed in both UTC and your local timezone.
This timestamp converter supports both directions: Unix timestamp to date/time and date/time to Unix timestamp. Shows UTC and local timezone equivalents. Displays millisecond precision. Runs entirely in your browser — no data is sent to any server.
Frequently Asked Questions
What is the difference between seconds and milliseconds timestamps? Standard Unix timestamps count seconds since the epoch (10 digits currently, e.g. 1700000000). JavaScript's Date.now() and many modern APIs return milliseconds (13 digits, e.g. 1700000000000). To convert: multiply seconds by 1000 to get milliseconds; divide milliseconds by 1000 to get seconds.
What is the 'Year 2038 Problem'? 32-bit signed integers can hold a maximum value of 2,147,483,647, which corresponds to January 19, 2038 at 03:14:07 UTC. Systems that store timestamps as 32-bit integers will overflow on that date. Modern systems use 64-bit timestamps which won't overflow for billions of years.
Why do timestamps sometimes appear wrong in my timezone? Unix timestamps are UTC-based. When displayed, they need to be converted to the local timezone. If a timestamp appears wrong, the issue is usually timezone offset miscalculation. Timestamps stored in databases should always be in UTC and converted to local time in the application layer.
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