Updated Time & Date Tool

Timestamp Converter

Convert Unix timestamps to human-readable dates and times, and convert dates back to Unix time in seconds or milliseconds. View UTC and local values and get the current timestamp instantly.

Unix Time (Seconds) Unix Time (Milliseconds) UTC & Local Current Time

Convert Between Unix Time and Human-Readable Dates

Use this Timestamp Converter to translate Unix epoch time (seconds or milliseconds since 1 January 1970 UTC) into readable dates and times, or convert a date/time back into a Unix timestamp. You can also quickly fetch the current timestamp and see both UTC and local values.

Enter either seconds or milliseconds since 1 January 1970 UTC.

Unix timestamps count the number of seconds (or milliseconds) that have elapsed since the Unix epoch (1970-01-01T00:00:00Z). They do not store a time zone by themselves.

Use the date/time picker, or type a value in the format YYYY-MM-DDTHH:MM.

Choose whether the input value should be interpreted as local time (your device’s time zone) or as a UTC timestamp. The Unix epoch itself is always defined in UTC.

Click the button below to capture the current time from your device and see it as Unix seconds, milliseconds, local time and UTC.

Timestamp Converter – Unix Time and Human-Readable Date/Time

The Timestamp Converter on MyTimeCalculator makes it easy to work with Unix epoch time and human-readable date/time formats. Whether you are debugging APIs, analyzing log files, or just trying to understand what a particular timestamp means, this tool helps you switch between numeric Unix values and formatted dates in a few clicks.

You can convert Unix timestamps to dates, convert dates back to Unix time, and quickly grab the current time in multiple formats. The calculator supports both seconds and milliseconds, as well as UTC and local time views.

1. What Is a Unix Timestamp?

A Unix timestamp (also called Unix time or POSIX time) is a simple way to represent a point in time as a single number. It counts the number of seconds (or milliseconds) that have elapsed since the Unix epoch:

  • Epoch start: 1970-01-01 00:00:00 UTC.
  • Unix seconds: Whole seconds since the epoch.
  • Unix milliseconds: Milliseconds since the epoch (1 second = 1000 milliseconds).

Unix timestamps are commonly used in databases, log files, APIs and programming languages because they are easy to compare, store and transmit.

2. Converting Unix Time to Human-Readable Dates

When you paste a Unix timestamp into the Unix → Date tab, the converter:

  • Interprets your input as either seconds or milliseconds, based on your selected unit.
  • Converts it to a date object based on the Unix epoch definition in UTC.
  • Displays the result in local time, UTC and ISO 8601 format.
  • Echoes back the normalized Unix seconds and milliseconds values.

This is especially useful when reading raw logs or event data where timestamps are usually stored as Unix numbers instead of formatted strings.

3. Converting Dates to Unix Timestamps

In the Date → Unix tab, you can start from a human date/time and convert it into Unix seconds and milliseconds. The converter:

  • Accepts a datetime-local style input like 2025-11-28T14:30.
  • Lets you decide whether to interpret that value as local time or UTC.
  • Computes the corresponding Unix timestamp and shows both seconds and milliseconds.
  • Displays the normalized UTC, local and ISO 8601 forms for cross-checking.

This is helpful when you need to generate Unix timestamps to feed into APIs, database queries or test data generators.

4. Viewing the Current Time in Multiple Formats

The Now & Quick View tab lets you grab the current time from your device in one click. It shows:

  • Current Unix seconds and milliseconds.
  • Current UTC date/time.
  • Current local date/time (based on your system time zone).
  • ISO 8601 representation, commonly used in APIs and data interchange.

This is handy when you want to test API endpoints that expect timestamps, generate quick examples for documentation, or verify that time zone settings on your machine are correct.

5. Time Zones and Daylight Saving Time

Unix timestamps themselves do not store a time zone; they always count from the epoch defined in UTC. When converting to a date/time string:

  • The UTC view shows the absolute time since the epoch, independent of where you are located.
  • The local view adjusts the same instant to your device’s configured time zone, including any daylight saving time rules.

This tool shows both perspectives side by side so you can see how the same moment is represented in UTC versus local time.

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Timestamp Converter FAQs

Frequently Asked Questions

Quick answers to common questions about Unix time, epoch seconds, milliseconds, UTC vs local time and how this converter works.

Unix seconds count whole seconds since 1970-01-01T00:00:00Z, while Unix milliseconds count thousandths of a second since the same epoch. Many APIs and databases use seconds, but JavaScript’s Date object uses milliseconds internally. The converter lets you work with both units and see the relationship between them.

The Unix timestamp represents a single instant in time on the global timeline. When you view it in UTC, you see that instant relative to Coordinated Universal Time. When you view it in local time, your computer adjusts it according to your configured time zone and any daylight saving rules. The underlying point in time is the same, but the clock reading changes based on the time zone.

Differences usually come from how each tool interprets the input time zone. Some tools assume all input is in UTC, while others assume local time by default. In this converter, you can explicitly choose whether the input should be treated as local time or UTC. Make sure both tools are using the same interpretation to get consistent results.

The converter relies on the browser’s built-in Date implementation, which typically supports a wide but finite range (roughly several hundred thousand years around the epoch). Extremely large or invalid timestamps may not convert reliably and will be flagged as invalid or result in “Invalid Date” output. For normal application, log and API ranges, it should work as expected.

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