Unix Timestamp Converter
Convert between Unix timestamps and dates. Supports auto-detection of seconds/milliseconds and UTC/KST display.
Current Unix Timestamp
Seconds
Milliseconds
Copied
Timestamp → Date
UTC
KST (UTC+9)
ISO 8601
RFC 2822
Relative Time
Day of Week
Date → Timestamp
Seconds
Milliseconds
Notable Timestamp References
| Event | Timestamp | Date (UTC) |
|---|---|---|
| Unix Epoch | 0 | 1970-01-01 00:00:00 |
| Y2K | 946684800 | 2000-01-01 00:00:00 |
| 1 Billion | 1000000000 | 2001-09-09 01:46:40 |
| 2 Billion | 2000000000 | 2033-05-18 03:33:20 |
| Y2K38 Problem | 2147483647 | 2038-01-19 03:14:07 |
What is Unix Timestamp?
A Unix Timestamp (Epoch Time) represents the number of seconds elapsed since January 1, 1970 00:00:00 UTC.
Used in most programming languages and databases to handle time.
• 10-digit number (e.g. 1700000000)
• 13-digit number (e.g. 1700000000000), the value returned by JavaScript's
This tool runs entirely in your browser — no data is sent to the server.