Online Unix Timestamp Converter
A Unix timestamp is the number of seconds (or milliseconds) elapsed since January 1, 1970 00:00:00 UTC. Widely used in databases, APIs, and logs. This tool converts timestamps to human-readable formats and back.
Frequently asked questions
What is a Unix timestamp?
A Unix timestamp (also known as Unix time or POSIX time) is an integer equal to the number of seconds elapsed since 00:00:00 UTC on January 1, 1970 (the epoch). Some systems use milliseconds instead, in which case the value is approximately 1000 times larger.
How do I convert a timestamp to a date in JavaScript?
new Date(timestamp * 1000).toISOString() — for seconds. new Date(timestamp).toISOString() — for milliseconds. In Python: datetime.fromtimestamp(ts) or datetime.utcfromtimestamp(ts) for UTC.
What is the "Year 2038 problem"?
A 32-bit signed integer can only store timestamps up to 03:14:07 UTC on January 19, 2038. After that point, integer overflow occurs. Modern systems use 64-bit values and are not affected by this issue.
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