![]() ![]() The formula used to convert Unix timestamp recorded in milliseconds is: Once you enter this formula into the cell, the formula can be dragged down and copied to other cells in the workbook. Remember to replace Unix Time with the cell reference that contains the Unix timestamp. The formula used to convert Unix timestamp recorded in seconds is: First, we will look at the formula when the timestamp is in second and then we will look at the formula when the timestamp is in milliseconds. Let us first explore converting Unix time to Excel Time. We will convert back and forth from Unix time to Excel time in both Excel and Power Query. ![]() So now that you have a basic knowledge of Unix time, how can we work with this in Excel or Power Query? Throughout the rest of this article, you are going to learn how to carry out Unix Timestamp conversions in Excel. Unix time spans from December 13 th, 1901, and will end on the 19 th of January 2038. Unfortunately, there are upper and lower bounds which restricts the actual time span available. There is however a limitation of Unix time. It is represented by a 32-bit integer that can be positive or negative. So, what is Unix time? Unix time is the duration in seconds or milliseconds from midnight of the 1 st January 1970 in UCT time. The reason Unix time is used is that no matter where you live or the time zone you are in, this Unix timestamp represents a moment that is the same everywhere. Unix time is commonly used in operating systems and programs that timestamp transactions as they happen. The first time I came across a UNIX-based time was when I was connecting to a database from Excel and although the field was named Time, I had no idea what all these numbers meant, and I was left totally confused. With the ability to connect to a vast variety of data sources, the likelihood of you coming across a Unix timestamp is increasing. Unix Timestamp conversions in Excel and in Power query are becoming more and more common. ![]()
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