Find empty dates in a set of date ranges
The formula in cell B8, shown above, extracts dates not included in the specified date ranges, in other words, dates […]

Insert blank rows for missing values
HughMark asks:  I have 2 columns named customer (A1) and OR No. (B1). Under customer are names enumerated below them. […]

Identify missing numbers in a range
Question: How do I find missing numbers between 1-9 in a range? 1 3 4 5 6 7 8 8 […]

Identify missing three character alpha code numbers
This blog article answers a comment in this blog article: Identify missing values in two columns using excel formula Question: […]

Identify missing numbers in two columns based on a numerical range
Question: I want to find missing numbers in two ranges combined? They are not adjacent. Answer: Array formula in cell […]

Identify missing numbers in a column
The image above shows an array formula in cell D6 that extracts missing numbers i cell range B3:B7, the lower […]

What values are missing in List 1 that exists i List 2?
This article shows how to compare two nonadjacent cell ranges and extract values that exist only in one of the […]