Unix Timestamp Converter
Convert between Unix timestamps and readable dates, with support for both seconds and milliseconds.
Current Timestamp
Seconds:
1751521765Milliseconds:
1751521765000Common Timestamps:
How to use:
Timestamp to Date:
- Enter a Unix timestamp (e.g., 1620000000)
- Select whether the timestamp is in seconds or milliseconds
- The date will update automatically as you type
- View both UTC and local time zone representations
Date to Timestamp:
- Select a date using the date picker
- Optionally select a specific time
- Choose whether to interpret the date as local time or UTC
- Select the output format (seconds or milliseconds)
- The timestamp will update automatically as you change any option
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About Unix Timestamp Converter
What is Unix Timestamp?
A Unix timestamp (or Epoch timestamp) is the number of seconds that have elapsed since January 1, 1970 (midnight UTC/GMT). It's a way to track time as a running total of seconds, which makes it easier for computer systems to process and compare dates.
Features
- Convert Unix timestamps to human-readable dates
- Convert dates to Unix timestamps
- Support for millisecond and second formats
- UTC and local timezone conversions
- Current timestamp display
- Common timestamp presets
Common Use Cases
- Programming and debugging timestamps in code
- Working with API responses that include timestamps
- Converting log file timestamps
- Working with database timestamp fields
- Calculating time differences between events
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp (also called epoch time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. It's a standard way to represent dates and times in computer systems and is widely used in programming and databases.
What's the difference between seconds and milliseconds timestamps?
Unix timestamps are traditionally in seconds since epoch, but many modern systems (like JavaScript) use milliseconds. A milliseconds timestamp is 1000 times larger than a seconds timestamp. Our tool automatically detects the format based on the number length.
How do I convert a date to a timestamp?
Enter your date and time in the date input field, and the tool will automatically generate the corresponding Unix timestamp. You can choose between seconds and milliseconds format, and select your timezone for accurate conversion.
Can I use this tool for different timezones?
Yes, the tool supports timezone conversion. When converting dates to timestamps, you can select your local timezone or UTC. When converting timestamps to dates, the tool shows both UTC and local time for reference.
Why do I need to convert timestamps?
Timestamp conversion is useful for debugging applications, analyzing log files, scheduling tasks, working with APIs that use Unix time, database operations, and understanding when events occurred in different systems.
What's the maximum date range for timestamps?
Standard 32-bit Unix timestamps can represent dates from 1970 to 2038. However, modern 64-bit systems support much larger ranges. Our tool can handle dates well beyond 2038 and before 1970 (represented as negative timestamps).
How accurate are the conversions?
The conversions are mathematically precise. The tool uses JavaScript's built-in Date functions which handle leap years, daylight saving time, and timezone changes automatically for maximum accuracy.
Can I convert negative timestamps?
Yes, negative timestamps represent dates before January 1, 1970. The tool handles negative timestamps correctly and will show you the corresponding date in the past.
What format should I use for date input?
The tool accepts various date formats including YYYY-MM-DD, MM/DD/YYYY, and others. For best results, use the date picker interface or ensure your date format is unambiguous. Time can be included in 24-hour or 12-hour format.
Is my data secure when using this tool?
Yes, all timestamp conversions happen entirely in your browser using client-side JavaScript. No dates or timestamps are sent to servers or stored anywhere. Your data remains completely private.
Can I use this for batch conversions?
The current tool processes one timestamp or date at a time for accuracy and clarity. For bulk conversions, you can use the tool repeatedly or consider using programming scripts for automated batch processing.
What's the Y2K38 problem?
The Y2K38 problem occurs when 32-bit systems can no longer represent timestamps after January 19, 2038. Modern 64-bit systems don't have this limitation. Our tool supports dates well beyond 2038 and will work correctly regardless of this limitation.