Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
Timestamp → Date
Date → Timestamp
About Unix Timestamps
A Unix timestamp (also known as Epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970 (midnight UTC), not counting leap seconds.
Seconds vs Milliseconds
- Seconds: Standard Unix timestamp (10 digits as of 2001)
- Milliseconds: Used by JavaScript, Java (13 digits)
This tool auto-detects whether your input is in seconds or milliseconds.
Common Use Cases
- Database timestamps
- API responses
- Log files
- JWT tokens (exp, iat claims)
- Caching and TTL