Unix Timestamp to Date Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds, milliseconds, and microseconds. Handle UTC and local timezones instantly.
Current Timestamp
Unix Timestamp to Date
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Date to Unix Timestamp
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How to Use Unix Timestamp Converter
Step 1
Select whether you want to convert a Unix timestamp to a human-readable date, or convert a date to a Unix timestamp. Both directions are supported with instant conversion.
Step 2
For timestamp-to-date: Enter the Unix timestamp in seconds (10 digits) or milliseconds (13 digits). For date-to-timestamp: Use the date picker or type the date in your preferred format.
Step 3
Choose between UTC (Coordinated Universal Time) or your local timezone. UTC is the standard for servers and databases, while local time is useful for user-facing displays.
Step 4
Click the copy button to copy the converted value to your clipboard. Use it in your code, database queries, or API requests instantly.
Unix Timestamp Formats: Seconds vs Milliseconds
Different programming languages and systems use different timestamp formats. Understanding the difference helps you avoid common bugs.
| Format | Example | Common Usage |
|---|---|---|
| Seconds (10 digits) | 1703088000 | Unix/Linux systems, PHP, Python time.time() |
| Milliseconds (13 digits) | 1703088000000 | JavaScript Date.now(), Java System.currentTimeMillis() |
| Microseconds (16 digits) | 1703088000000000 | High-precision timing, Python time.time() * 1000000 |
Best Practices for Timestamps
- Always store timestamps in UTC: Never store local time in databases. Convert to UTC for storage, then convert to local time for display.
- Use seconds for most cases: Unix timestamps in seconds (10 digits) are the standard. Use milliseconds only when you need sub-second precision.
- Beware of the Year 2038 Problem: 32-bit systems will overflow on January 19, 2038. Use 64-bit integers or upgrade your systems before then.
- Handle timezone conversions carefully: Always specify the timezone when converting. Ambiguous times during DST transitions can cause bugs.
- Use ISO 8601 for APIs: When sending dates in JSON APIs, use ISO 8601 format (2024-01-01T00:00:00Z) instead of Unix timestamps for better readability.
- Test with edge cases: Test your timestamp handling with dates before 1970, after 2038, during DST transitions, and across different timezones.
Frequently Asked Questions
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