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Convert Unix epoch seconds and milliseconds to ISO 8601, UTC, and Pakistan Standard Time (`Asia/Karachi`), or convert any date back to Unix seconds.
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Here’s how to get the most out of timestamp converter.
The Unix epoch measures time as the number of seconds elapsed since January 1, 1970 at 00:00:00 UTC (ignoring leap seconds). JavaScript’s Date.now() returns milliseconds (13 digits), whereas PHP’s time(), MySQL UNIX_TIMESTAMP(), and JWT exp claims use seconds (10 digits).
A few things you might want to know before you start.
Current timestamps in seconds have 10 digits (e.g., 1760700000), while timestamps in milliseconds have 13 digits (e.g., 1760700000000).
Pakistan Standard Time (Asia/Karachi) is UTC+05:00 year-round with no daylight saving time shifts.
Signed 32-bit integers overflow on January 19, 2038. Modern 64-bit systems (including PHP 8+ and modern databases) store 64-bit timestamps and are unaffected.
Yes, paste the exp integer from your JWT or use our dedicated JWT Decoder tool.
