This tutorial would show you how you can use some formula in Calc to count blank and non empty cells in LibreOffice Calc.
There are times, when you need to quickly find out how many cells are having text/numbers and how many cells are blank in a huge sheet with data. Here’s how you can do it.
Count blank cells
Use COUNTBLANK(range) function to calculate the blank cells. It returns the number of empty cells (i.e. not contains any text, numbers, even spaces) in the range.
Syntax
COUNTBLANK(Range)
Returns the number of empty cells in the cell range Range.
In below example, there are 5 blank cells (yellow highlighted) in the range A1 to A10 and COUNTBLANK(A1:A10) returns 5.

Count non empty cells
Use COUNTA(range) function to count the cells those are not blank or empty. It counts the cells that having some values – texts, numbers.
Syntax
COUNTA(Range)
Returns the number of cells that having texts, numbers.
In below example, COUNTA(A1:A10) returns 5 as there are five values present.

This way you can count the blank and non empty cells in LibreOffice Calc.
Official Reference
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