Unix Timestamp Converter
Convert Unix timestamps to readable dates and vice versa with timezone support.
Current Unix Timestamp
Current Timestamp:
1765207753
Current Date/Time:
2025-12-08 15:29:13 UTC
Convert Date to Unix Timestamp
Convert Unix Timestamp to Date
What is Unix Timestamp?
Unix timestamp (also known as Epoch time) is a system for describing a point in time. It's defined as the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC, minus leap seconds.
Key Features of Unix Timestamp
- Universal: Same timestamp represents the same moment worldwide
- Simple: Just a single integer number
- Precise: Accurate to the second
- Compact: Efficient storage and transmission
- Sortable: Chronological order matches numerical order
Common Use Cases
- Databases: Storing creation and modification times
- APIs: Timestamp parameters in REST APIs
- Logging: System and application log timestamps
- Caching: Cache expiration times
- Authentication: Token expiration times
- Analytics: Event tracking and analysis
Important Milestones
- Epoch Start: 0 = January 1, 1970, 00:00:00 UTC
- Y2K: 946684800 = January 1, 2000, 00:00:00 UTC
- Billion Seconds: 1000000000 = September 9, 2001
- Year 2038 Problem: 2147483647 = January 19, 2038 (32-bit limit)
Programming Examples
- JavaScript: Math.floor(Date.now() / 1000)
- PHP: time() or strtotime('date string')
- Python: import time; time.time()
- Java: System.currentTimeMillis() / 1000
- C++: std::time(nullptr)
Timestamp Formats
- Unix Timestamp: Seconds since epoch (e.g., 1640995200)
- Milliseconds: JavaScript timestamp (e.g., 1640995200000)
- Microseconds: High precision timestamp
- ISO 8601: Human-readable format (e.g., 2022-01-01T00:00:00Z)
Timezone Considerations
- Unix timestamps are always in UTC
- Convert to local time zones for display
- Be aware of daylight saving time changes
- Store timestamps in UTC, display in local time
- Use timezone-aware libraries for calculations