Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds with auto-detection. Enter a timestamp or a date string. Runs in your browser.
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About This Tool
How to Use
- 1Select a mode: Timestamp to Date, Date to Timestamp, or Current Timestamp.
- 2For timestamp to date: enter a Unix timestamp (seconds or milliseconds).
- 3For date to timestamp: enter a date string in ISO 8601 format (e.g. 2024-01-15T10:30:00Z).
- 4Or upload a .txt file with one value per line for batch conversion.
- 5Click "Process" to convert.
When to Use
- •When debugging API responses that contain Unix timestamps.
- •When converting human-readable dates to timestamps for database queries.
- •When working with log files that use epoch time.
- •When you need the current Unix timestamp for testing or development.
Tips & Tricks
- ✨The tool auto-detects seconds vs milliseconds: values under 1 trillion are treated as seconds.
- ✨Use ISO 8601 format (YYYY-MM-DDTHH:MM:SSZ) for the most reliable date-to-timestamp conversion.
- ✨The "Current Timestamp" mode gives you the exact current time in all formats.
- ✨Upload a file with one timestamp per line to batch-convert log entries or data records.
Frequently Asked Questions
A Unix timestamp (also called epoch time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. It is widely used in programming, databases, and APIs to represent points in time as simple numbers.
If the numeric value is less than 1 trillion (1,000,000,000,000), it is treated as seconds. Values of 1 trillion or greater are treated as milliseconds. This covers dates well into the future for both formats.
No. All conversions use the browser built-in Date object and run entirely on your device.
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