About

Timestamp Converter

Convert Unix timestamps to human-readable dates

Unix Timestamp

Enter timestamp or date to convert

About This Tool

A Unix timestamp (also known as epoch time or POSIX time) represents the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC (the Unix epoch). It is the standard way computers store and exchange date and time information. Timestamps are used extensively in databases, APIs, log files, and distributed systems because they are timezone-independent and easy to compare. Our free online timestamp converter lets you convert Unix timestamps to human-readable dates and times, and vice versa. It supports both seconds and milliseconds precision, displays results in your local timezone and UTC, and handles dates across a wide range from 1970 to 2099.

How to Use

  1. To convert a Unix timestamp to a readable date, paste the numeric timestamp into the input field. The tool auto-detects whether the value is in seconds or milliseconds based on its magnitude.
  2. The converted date and time will be displayed in multiple formats: full date string, ISO 8601 format, RFC 2822 format, and relative time (e.g., "3 hours ago"). Both your local timezone and UTC are shown.
  3. To convert a date to a Unix timestamp, enter the date and time using the date picker or type it manually. The corresponding Unix timestamp in both seconds and milliseconds will be displayed.
  4. Click the "Current Timestamp" button to instantly get the current Unix timestamp, which is useful when you need to record or compare the current time in your code or API requests.

Frequently Asked Questions

A seconds-based Unix timestamp is a 10-digit number representing seconds since the epoch (e.g., 1700000000). A milliseconds-based timestamp is a 13-digit number representing milliseconds (e.g., 1700000000000). Many modern systems and programming languages like JavaScript use milliseconds by default. Our tool auto-detects the format, but you can also manually switch between them.
This usually happens due to timezone differences. Unix timestamps are always in UTC, but when converted to a human-readable format, they are displayed in your local timezone. If you need UTC, make sure to select the UTC display option. Also verify that you are using seconds vs. milliseconds correctly, as mixing them up will result in dates in 1970 or far in the future.
On most 32-bit systems, the maximum Unix timestamp is 2147483647, which corresponds to January 19, 2038 at 03:14:07 UTC. This is known as the Year 2038 problem. Modern 64-bit systems can represent timestamps far beyond this date. Our tool supports a wide range of dates for practical use.
The Year 2038 problem affects systems that store time as a 32-bit signed integer (Unix timestamp). On January 19, 2038, this value will overflow, potentially causing issues. Modern 64-bit systems are not affected, but embedded systems and legacy software may still be vulnerable.
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