5 Ways To Convert Unix Timestamp To Datetime In Excel

The Unix timestamp, a widely used format for representing time, can be a bit confusing when working with dates in Excel. Fortunately, there are several ways to convert a Unix timestamp to a datetime format in Excel. In this article, we will explore five methods to achieve this conversion, making it easier to work with dates in your spreadsheet.

What is a Unix Timestamp?

A Unix timestamp is a numeric representation of time, measured in seconds since January 1, 1970, 00:00:00 UTC. This format is widely used in programming languages, such as Python, Java, and JavaScript, to represent dates and times.

Why Convert Unix Timestamp to Datetime in Excel?

When working with data that contains Unix timestamps, it can be challenging to analyze and understand the dates. Converting the Unix timestamp to a datetime format makes it easier to:

• Read and understand the dates
• Perform date-based calculations and analysis
• Use Excel's built-in date functions and formatting options

Now, let's dive into the five methods to convert a Unix timestamp to a datetime format in Excel.

Method 1: Using the =A1/86400+DATE(1970,1,1) Formula

This method involves using a simple formula to convert the Unix timestamp to a datetime format.

Assuming the Unix timestamp is in cell A1, enter the following formula in a new cell:

=A1/86400+DATE(1970,1,1)

This formula works by dividing the Unix timestamp by 86,400 (the number of seconds in a day) and adding the result to the date January 1, 1970.

Method 2: Using the =FROM_UNIXTIME Function (Excel 2019 and Later)

In Excel 2019 and later versions, you can use the FROM_UNIXTIME function to convert a Unix timestamp to a datetime format.

Assuming the Unix timestamp is in cell A1, enter the following formula in a new cell:

=FROM_UNIXTIME(A1)

This function automatically converts the Unix timestamp to a datetime format.

Method 3: Using VBA Macro

If you're comfortable with VBA macros, you can create a custom function to convert a Unix timestamp to a datetime format.

Open the Visual Basic Editor (VBE) by pressing Alt+F11 or navigating to Developer > Visual Basic in the Excel ribbon. In the VBE, create a new module and paste the following code:

Function UnixToDateTime(UnixTimestamp As Long) As Date
    UnixToDateTime = DateAdd("s", UnixTimestamp, "1970-01-01 00:00:00")
End Function

Save the module and return to your Excel worksheet. Assuming the Unix timestamp is in cell A1, enter the following formula in a new cell:

=UnixToDateTime(A1)

This VBA macro uses the DateAdd function to convert the Unix timestamp to a datetime format.

Method 4: Using Power Query

Power Query is a powerful tool in Excel that allows you to manipulate and transform data. You can use Power Query to convert a Unix timestamp to a datetime format.

Assuming the Unix timestamp is in a table or range, follow these steps:

1. Select the table or range containing the Unix timestamp.
2. Go to the Data tab in the Excel ribbon.
3. Click on From Table/Range in the Get & Transform Data group.
4. In the Power Query Editor, click on the Add Column tab.
5. Click on Custom Column and enter the following formula:

=DateTime.FromUnixTimestamp([Unix Timestamp])

6. Click OK to add the new column.

This Power Query formula uses the DateTime.FromUnixTimestamp function to convert the Unix timestamp to a datetime format.

Method 5: Using a Third-Party Add-in

There are several third-party add-ins available that can help you convert a Unix timestamp to a datetime format in Excel.

One popular add-in is the Unix Timestamp Converter add-in, which can be downloaded from the Microsoft Office Store.

Once installed, follow the instructions provided by the add-in to convert the Unix timestamp to a datetime format.

Gallery of Unix Timestamp Conversion Methods

Unix Timestamp Conversion Methods

Frequently Asked Questions

• Q: What is the difference between a Unix timestamp and a datetime format? A: A Unix timestamp is a numeric representation of time, measured in seconds since January 1, 1970, 00:00:00 UTC. A datetime format, on the other hand, is a human-readable representation of time, typically in the format YYYY-MM-DD HH:MM:SS.
• Q: Can I convert a datetime format to a Unix timestamp in Excel? A: Yes, you can use the =A1-DATE(1970,1,1) formula to convert a datetime format to a Unix timestamp.
• Q: Are there any limitations to using the FROM_UNIXTIME function in Excel 2019 and later versions? A: Yes, the FROM_UNIXTIME function is only available in Excel 2019 and later versions. If you're using an earlier version of Excel, you'll need to use one of the other methods listed above.

Conclusion

Converting a Unix timestamp to a datetime format in Excel can be a bit tricky, but with the right methods, it can be done easily. In this article, we've explored five methods to convert a Unix timestamp to a datetime format in Excel, including using formulas, VBA macros, Power Query, and third-party add-ins. Whether you're working with large datasets or just need to convert a single timestamp, these methods will help you get the job done.