Free OnlineUnix TimestampConverttool - Time ↔Date | second/millisecond | physicalwhenshow

aboutUnix Timestamp

Definition

Unix Timestamp（Unix Epoch）isauto1970year1month1day 00:00:00 UTC withcome through secondnumber，doesn't contain second。 isCalculate systemintableshowTime standard 。

Common Programming Examples

• JavaScript: Date.now() → millisecondTime ；new Date(ts*1000) → Date
• Python: time.time() → second；datetime.fromtimestamp(ts)
• Shell: date +%s → second；date -d @1700000000

Important Timestamps

• 0 → 1970-01-01 00:00:00 UTC（Unix Epoch）
• 1000000000 → 2001-09-09 01:46:40 UTC
• 2000000000 → 2033-05-18 03:33:20 UTC
• 2147483647 → 2038-01-19 03:14:07 UTC（32-bit overflow）