Timestamp Converter
Convert between Unix timestamps and human-readable dates
Current Time
Unix Timestamp (seconds)
0
Human Readable
7/11/2026, 3:22:55 AM
Timestamp → Date
Date → Timestamp
About Unix Timestamps
- • Unix timestamp is the number of seconds since January 1, 1970 (UTC)
- • JavaScript uses milliseconds, so divide by 1000 for Unix timestamp
- • This tool automatically detects seconds vs milliseconds based on length
- • ISO 8601 format (YYYY-MM-DDTHH:mm:ssZ) is recommended for date strings
Understanding Unix Timestamps
A Unix timestamp (also called Epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970 at 00:00:00 UTC, known as the Unix Epoch. This simple integer representation of time is used extensively in computing because it is timezone-independent and easy to perform arithmetic on.
Why Use Timestamps?
- Database Storage: Timestamps are compact and efficient for storing date/time values in databases, avoiding timezone ambiguity.
- API Communication: REST APIs commonly use Unix timestamps for consistency across different systems and timezones.
- Log Analysis: Server logs use timestamps for precise event ordering and duration calculations.
- Caching: Cache expiration times are often expressed as Unix timestamps for simple comparison.
Milliseconds vs Seconds
Some systems (notably JavaScript and Java) use millisecond timestamps (13 digits), while others (Unix/Linux, Python) use second timestamps (10 digits). This tool supports both formats. The Year 2038 problem affects 32-bit systems that store timestamps as signed 32-bit integers, which will overflow on January 19, 2038.