Timestamp Converter
Convert Unix timestamps to readable dates and vice versa. Essential for developers and anyone working with time-based data.
Timestamp to Date
Date to Timestamp
Common Timestamps
094668480015778368001893456000Our timestamp converter bridges the gap between human-readable dates and machine-friendly Unix timestamps. Unix timestamps are integers representing seconds since January 1, 1970 (the Unix epoch). They're the standard way servers, databases, and programming languages store and transmit time information.
When to Use This Tool
- Converting database timestamps for display in user interfaces
- Debugging API responses that return Unix timestamps
- Setting cache expiration times in web development
- Converting server log timestamps to human-readable dates
- Working with blockchain and cryptocurrency transaction times
- Scheduling cron jobs and understanding their next execution time
- Converting between different timezone representations
How to Use
Convert Timestamp to Date
- Enter a Unix timestamp in the input field (seconds or milliseconds)
- Select the target timezone from the dropdown
- View the converted date and time instantly
- Copy the result or convert to other formats
Convert Date to Timestamp
- Select the date and time using the picker
- Choose the source timezone
- View the corresponding Unix timestamp
- Use the timestamp in your code, database, or API
Understanding Unix Timestamps
- Unix timestamp is seconds since January 1, 1970 00:00:00 UTC
- JavaScript uses milliseconds (Unix × 1000)
- Python's time.time() returns seconds
- Many APIs (Twitter, Facebook) use seconds
- Always verify the unit (seconds vs milliseconds) when debugging
Examples
Current Moment
A common timestamp format returned by many APIs and databases
Input
1709856000 (seconds)
Result
2024-03-08 00:00:00 UTC | 2024-03-08 08:00:00 CST
JavaScript Timestamp
JavaScript Date.now() returns milliseconds, remember to divide by 1000
Input
1709856000000 (milliseconds)
Result
2024-03-08 00:00:00 UTC | 2024-03-08 08:00:00 CST
Future Date Calculation
Useful for setting expiration times or scheduled tasks
Input
Current timestamp + 86400 (seconds in a day)
Result
Exactly 24 hours from now
Frequently Asked Questions
What's the difference between Unix timestamp and UTC?
Unix timestamp is a count of seconds since January 1, 1970 00:00:00 UTC. It's timezone-independent - the same everywhere. UTC is a time standard, while timestamps are integers that represent moments in time regardless of location.
Why do some systems use milliseconds instead of seconds?
JavaScript, Java, and some databases use milliseconds for better precision in date calculations. When working with APIs, always check the documentation to know which unit is used. Common rule: if the number is larger than 10 billion, it's likely milliseconds.
How do I handle timezones in timestamp conversions?
Unix timestamps are always UTC-based. To display in a local timezone, you need to apply the timezone offset. For example, China (CST) is UTC+8, so you add 8 hours to the UTC time to get local time.
What happens with timestamps before 1970?
Unix timestamps can be negative for dates before January 1, 1970. For example, -86400 represents 1969-12-31 00:00:00 UTC. However, many programming languages and databases handle pre-1970 dates differently.
Can timestamps handle leap years and daylight saving time?
Unix timestamps are absolute moment-in-time values, so they automatically account for leap seconds, leap years, and daylight saving time transitions. When you convert a timestamp to a date, the system handles all these calendar complexities for you.
Pro Tips
- •Always store timestamps in UTC and convert to local time only for display
- •When debugging APIs, check if they use seconds or milliseconds (common source of bugs)
- •Use Date.now() in JavaScript for current timestamp, not new Date()
- •Python: int(time.time()) gives Unix seconds, time.time() gives float with microseconds
- •For date arithmetic, it's often easier to convert to timestamp, calculate, then convert back
- •ISO 8601 format (2024-03-08T00:00:00Z) is the international standard for date representation
- •Be careful with timezone conversions during DST transitions - times may be ambiguous