A Unix timestamp converter translates between Unix epoch time (seconds since January 1, 1970 UTC) and human-readable dates. Timestamps appear constantly in API responses, database records, log files, and JWT tokens. This tool converts in both directions, supports seconds/milliseconds/nanoseconds, and shows the current live timestamp.
Current Unix Timestamp
LiveTimestamp to Human Date
Date to Timestamp
How to Use the Unix Timestamp Converter
Unix timestamps are the universal language of time in computing. Every API, database, and programming language works with them. Our free Unix timestamp converter makes it easy to decode what a timestamp means or generate one from any date and time.
Converting a Timestamp to a Human Date
Paste any Unix timestamp into the input field — the tool automatically detects whether it is in seconds (10 digits), milliseconds (13 digits), or nanoseconds (19 digits). Select the output timezone and the converter instantly shows the date in ISO 8601, RFC 2822, human-readable, and relative formats. You also see all precision equivalents (seconds, milliseconds, nanoseconds) for the same moment.
Converting a Date to a Timestamp
Use the date and time picker in the "Date to Timestamp" section to select any moment. Click Convert to see the corresponding Unix timestamp in all three precisions. The date input uses your browser's local time, so select UTC from the timezone dropdown above if you need UTC-based timestamps.
The Live Timestamp Ticker
The "Current Unix Timestamp" panel at the top shows the current time in real-time, updating every second. Click "Use current timestamp" to populate the converter with the current moment. This is useful for testing how many seconds remain until a future event or how long ago a past event occurred.
Common Use Cases
Developers use a Unix timestamp converter to decode exp and iat claims in JWT tokens, interpret database timestamps in logs, verify API response times, debug cache expiration values, and calculate time differences between events stored in different systems.
Frequently Asked Questions
Is the Unix timestamp converter free?
Yes, completely free with no account required. All conversions happen in your browser — no data is sent to any server.
What is a Unix timestamp?
A Unix timestamp (also called epoch time) is the number of seconds elapsed since January 1, 1970 at 00:00:00 UTC. It is a widely used format for representing moments in time in programming because it is a simple integer, timezone-independent, and easy to compare and calculate with.
What is the difference between seconds, milliseconds, and nanoseconds timestamps?
Unix timestamps in seconds (10 digits) are the classic format used by most systems. Milliseconds (13 digits) are used by JavaScript's Date.now() and many APIs. Nanoseconds (19 digits) appear in some high-precision systems and databases. This tool auto-detects the precision based on the number of digits.
What is the maximum Unix timestamp (year 2038 problem)?
On 32-bit systems using signed integers, Unix timestamps overflow on January 19, 2038 at 03:14:07 UTC — the 'year 2038 problem.' Modern 64-bit systems and programming languages can represent timestamps far beyond this date, handling billions of years into the future.
How do I get the current Unix timestamp in code?
In JavaScript: Math.floor(Date.now() / 1000). In Python: import time; int(time.time()). In PHP: time(). In SQL (MySQL): UNIX_TIMESTAMP(). In Linux shell: date +%s. The live ticker at the top of this tool also shows the current timestamp continuously.
Can I convert a timestamp from a specific timezone?
Unix timestamps are always UTC by definition — they represent an absolute moment in time with no timezone. The timezone selector in this tool affects how the human-readable output is displayed, not the underlying timestamp value.