Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
About This Tool
Unix Timestamp Converter is a free online tool that converts between Unix epoch timestamps and human-readable dates and times — in both directions. Enter a timestamp in seconds or milliseconds (auto-detected) to see the corresponding date, or enter a date to get the Unix timestamp. The current Unix timestamp updates live every second as a reference.
The tool is built for developers and engineers who regularly work with timestamp values in API responses, database records, log files, and configuration files. Dates are displayed in your local timezone with UTC offset for clarity, making it easy to verify timestamps from different regions or servers.
Unix Timestamp Converter is most useful for debugging API responses that contain epoch timestamps, converting date ranges for database queries, verifying token expiry times (JWT exp claims), analyzing log files with timestamp-based entries, and understanding Unix time for educational purposes.
Current Time
2026-04-12T17:28:11.480Z
How to Use
- 1
Enter a Unix timestamp (seconds or milliseconds) to convert it to a human-readable date.
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Or enter a date and time to get the corresponding Unix timestamp.
- 3
The current Unix timestamp is shown and updates in real time.
- 4
Use the millisecond timestamp value for JavaScript Date objects or browser APIs.
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Copy the converted value to use in database queries, API calls, or configuration files.
Features
Bidirectional Conversion
Convert from Unix timestamp to human-readable date, or from date to Unix timestamp.
Auto-Detects Milliseconds
Automatically detects whether your input is in seconds or milliseconds — no manual switching needed.
Live Current Timestamp
Displays the current Unix timestamp in real time, updating every second.
Timezone Support
Dates are displayed in your local timezone with UTC offset shown for clarity.
Common use cases
- ›Convert API response timestamps to human-readable dates for debugging or logging.
- ›Check JWT token expiry by converting the 'exp' claim timestamp to a local date and time.
- ›Calculate Unix timestamps for date ranges in database queries (WHERE created_at > X).
- ›Verify server log timestamps or event times by converting epoch values to local timezone dates.
FAQ
What is a Unix timestamp?
The number of seconds elapsed since January 1, 1970 (UTC), also known as the Unix epoch.
Does it support milliseconds?
Yes, it auto-detects whether your input is in seconds or milliseconds.
What is the Unix epoch?
The Unix epoch is January 1, 1970, 00:00:00 UTC — the reference point from which all Unix timestamps are measured. It was chosen arbitrarily when Unix was developed in the late 1960s.
Why do JavaScript timestamps use milliseconds?
JavaScript's Date.now() and Date.getTime() return milliseconds since the epoch (1970-01-01T00:00:00Z), while Unix systems traditionally use seconds. This tool auto-detects which format your input is in.
What is the Y2K38 problem?
On January 19, 2038, 32-bit Unix timestamps will overflow (2^31 = 2,147,483,647 seconds). Systems using 32-bit signed integers for timestamps will experience issues. Modern 64-bit systems are not affected.