What is a Unix timestamp (epoch time)?

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 (the Unix epoch). It's a standard way to represent time in computer systems and is timezone-independent, making it ideal for storing and transmitting dates across different systems.

Is my timestamp data safe when using this converter?

Yes, absolutely! All timestamp conversions happen entirely in your browser using JavaScript. Your timestamps and dates never leave your computer or get sent to any server. This ensures complete privacy and security for any time-related data you're working with.

What's the difference between seconds and milliseconds timestamps?

Unix timestamps can be in seconds (10 digits, like 1609459200) or milliseconds (13 digits, like 1609459200000). Seconds are the standard Unix format, while milliseconds are commonly used in JavaScript and some databases. Our tool automatically detects and converts both formats.

How do I convert a date to a Unix timestamp?

Simply enter a date and time in the date input field, and the tool will instantly convert it to a Unix timestamp in both seconds and milliseconds. You can also see the timestamp for the current moment by clicking the 'Now' button.

Why do I see different times in UTC and local timezone?

Unix timestamps are always in UTC (Coordinated Universal Time), but when displayed as human-readable dates, they can be shown in different timezones. Our tool shows both UTC and your local timezone so you can see the time in both contexts.

Does this work offline?

Yes! Once you've loaded the page, the timestamp converter works completely offline. You can bookmark this page and convert timestamps anytime without an internet connection, making it perfect for development work anywhere.

Time Tools

Unix Timestamp Converter

Convert between epoch seconds/milliseconds and readable date formats.

Unix → Date

Enter seconds or milliseconds since epoch.

Local

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UTC ISO

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Date → Unix

Pick a local date/time and convert.

Seconds

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Milliseconds

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How to Use Unix Timestamp Converter

Convert between timestamps and dates in three simple steps

1
Choose Conversion Direction
Decide whether you want to convert a Unix timestamp to a readable date, or convert a date to a Unix timestamp. The tool handles both directions seamlessly.
2
Enter Your Value
For timestamp-to-date: paste your Unix timestamp (in seconds or milliseconds). For date-to-timestamp: select or type a date and time. The tool automatically detects the format.
3
View Results
See the converted result instantly in both UTC and your local timezone. Copy the timestamp or formatted date for use in your application, database, or API.

Common Use Cases

Database Timestamps

Convert database timestamps to readable dates for debugging, reporting, or understanding when records were created or modified.

API Development

Work with timestamp fields in API requests and responses, converting between Unix time and human-readable formats.

Log Analysis

Convert timestamps in log files to readable dates to understand when events occurred and debug time-related issues.

Scheduling & Cron

Calculate Unix timestamps for scheduling tasks, setting up cron jobs, or working with time-based triggers.

Timezone Conversion

Understand how timestamps appear in different timezones by viewing both UTC and local time representations.

Date Calculations

Calculate time differences, expiration dates, or future timestamps by converting dates to Unix time for arithmetic operations.