Live Clock
See the current time in Unix, ISO 8601, UTC, and local formats, updated every second.
Timestamp Converter Online
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Loading...What Is a Unix Timestamp?
A Unix timestamp (also called epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC. It is the most widely used time representation in programming, databases, APIs, and server logs. Our converter lets you translate between epoch numbers and human-readable dates instantly.
Key Features
Bidirectional Conversion
Convert timestamp to date and date to timestamp with a single click.
100% Private
All conversions run in your browser. No data leaves your device.
How to Use the Timestamp Converter
1
Read the Live ClockThe top panel shows the current time as Unix, ISO 8601, UTC, and local time, refreshed every second.
2
Timestamp to DatePaste a Unix timestamp (e.g.
1700000000) in the left box and click Convert.3
Date to TimestampPick a date and time in the right box and click Convert to get the epoch in seconds and milliseconds.
Common Timestamp Examples
Debugging API Responses
API returns 1700000000? Paste it in to see it means Nov 14, 2023 10:13:20 AM UTC.
Log Analysis
Server logs use epoch timestamps. Convert them to human dates for faster debugging and incident analysis.
Database Queries
Convert date ranges to Unix timestamps for WHERE clauses in SQL queries against timestamp columns.
Cron & Scheduling
Calculate exact epoch times for scheduling jobs, setting TTLs, or configuring cache expiration.
Timestamp Format Guide
Unix Seconds
Usually 10 digits, such as 1700000000. Common in Linux, PHP, Python, APIs, logs, and database fields that store epoch seconds.
Unix Milliseconds
Usually 13 digits, such as 1700000000000. Common in JavaScript, Java, analytics events, browser APIs, and frontend applications.
ISO 8601
A readable UTC date format like 2023-11-14T22:13:20.000Z. Useful for JSON APIs and systems that need unambiguous time values.
Local Time
Your browser displays local time using your device timezone. The timestamp itself stays UTC-based; only the display changes by timezone.
Frequently Asked Questions
What is the Unix epoch?
The Unix epoch is January 1, 1970 00:00:00 UTC (timestamp 0). All Unix timestamps are measured as the number of seconds since this reference point.
Seconds vs milliseconds - which should I use?
It depends on the language. JavaScript (Date.now()) and Java use milliseconds (13 digits). Python (time.time()), PHP, and most Unix tools use seconds (10 digits). Our converter handles both.
What happens in the year 2038?
The Year 2038 problem affects systems using 32-bit signed integers for timestamps, which overflow on January 19, 2038. Modern 64-bit systems are not affected. Our tool uses JavaScript's 64-bit numbers.
Does this tool handle timezones?
Yes. The converter shows results in both UTC and your local timezone. Unix timestamps are always UTC-based, and the tool converts to your browser's timezone automatically.
Why does JavaScript use milliseconds?
JavaScript dates are based on milliseconds since the Unix epoch. That is why Date.now()returns a 13-digit millisecond timestamp instead of a 10-digit seconds timestamp.