Timestamp Converter
Free online Unix timestamp converter. Convert between Unix timestamps and human-readable dates. View current UTC and local time. All processing is local and private.
How to Use Timestamp Converter
View Current Time
The top panel shows the current Unix timestamp, UTC time, and your local time. These values update in real-time every second.
Convert Timestamp to Date
Enter a Unix timestamp (in seconds) to convert it to a human-readable date in both UTC and local time.
Convert Date to Timestamp
Use the date/time picker to select any date and time. The corresponding Unix timestamp is calculated automatically.
Common Timestamp Values
| Timestamp | Date (UTC) | Description |
|---|---|---|
| 0 | Jan 1, 1970 | Unix epoch |
| 1000000000 | Sep 9, 2001 | 1 billion seconds |
| 2000000000 | May 18, 2033 | 2 billion seconds |
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds that have elapsed since January 1, 1970 (UTC), not counting leap seconds. It's a simple, unambiguous way to represent time that is widely used in programming, databases, and APIs.
Why do developers use Unix timestamps?
Unix timestamps are timezone-independent, making them ideal for storing and transmitting time data. They avoid the complexity of date string parsing and timezone conversions. Most programming languages and databases have built-in support for Unix timestamps.
What is the Year 2038 problem?
On January 19, 2038, 32-bit Unix timestamps will overflow and wrap around to negative values, potentially causing date-related bugs in systems that still use 32-bit integers. Most modern systems now use 64-bit timestamps, which won't overflow for billions of years.
Is the timestamp in seconds or milliseconds?
This tool uses seconds (10-digit timestamps). However, many systems (including JavaScript) use milliseconds (13-digit timestamps). If you have a millisecond timestamp, divide by 1000 before entering it here.
About Unix Timestamps
The Unix epoch is January 1, 1970, 00:00:00 UTC. This date was chosen as a convenient reference point for early Unix systems. Every timestamp represents the number of seconds since this moment.
Common Uses
- Database record timestamps (created_at, updated_at)
- API authentication (JWT iat, exp claims)
- Event logging and analytics
- Cache expiration and TTL calculations