Unix Timestamp Converter

How to Use

1. The live display at the top shows the current Unix timestamp updated every second.
2. To convert a timestamp to a date: enter a Unix timestamp (seconds or milliseconds) in the left panel and click Convert.
3. To convert a date to a timestamp: pick a date/time in the right panel and click Convert.
4. Select your timezone in either panel for timezone-aware conversion.

Features

• Live current timestamp updated every second.
• Auto-detects seconds vs milliseconds timestamps.
• Outputs UTC, local time, and ISO 8601 format simultaneously.
• Timezone selector covering major world timezones.
• Copy any result value with one click.
• No server required — all calculations run in your browser.

Use Cases

• Debugging API responses that return Unix timestamps.
• Converting database DATETIME values to timestamps for queries.
• Checking when a JWT token was issued or expires (iat/exp claims).
• Log file analysis — converting log timestamps to readable dates.
• Scheduling cron jobs or events across different timezones.

FAQ

What is a Unix timestamp?

A Unix timestamp is the number of seconds elapsed since January 1, 1970, 00:00:00 UTC (the Unix epoch). It is language- and timezone-independent, making it ideal for storing time in databases and APIs.

Seconds vs milliseconds — how do I tell them apart?

Timestamps in seconds are typically 10 digits (e.g. 1704067200). Millisecond timestamps are 13 digits (e.g. 1704067200000). This tool auto-detects by checking if the value is greater than 1e10.

How do I get the current timestamp in code?

JavaScript: Math.floor(Date.now()/1000)
Python: import time; int(time.time())
PHP: time()
SQL: UNIX_TIMESTAMP() (MySQL) / strftime('%s','now') (SQLite)

What is the Year 2038 problem?

32-bit systems store Unix timestamps as signed integers, which overflow on January 19, 2038 at 03:14:07 UTC. Modern 64-bit systems and languages (including JavaScript) are not affected.