Explanation
This formula relies on the standard behavior of the COUNTIF function. The range is C5:C8, the criteria is provided as not equals OK:
=COUNTIF(C5:C8,"<>ok")
The COUNTIF then returns a count of any cells that do not contain "OK" which is compared to zero. If the count is zero, the formula returns TRUE. If the count is anything but zero, the formula returns FALSE.
Ignore empty cells
To ignore empty cells, you can use a more generic version of the formula:
=COUNTIF(range,value)=COUNTA(range)
This formula generates a count of all matching values and compares that count to a count of all non-empty cells.
Non-contiguous cells
If the cells are not in a contiguous range, you can use the AND function and a more manual approach. For example, to check that cells A1, A3, A5, and A9 contain "OK", you can use a formula like this:
=AND(A1="ok",A3="ok",A5="ok",A9="ok")Excel is not case-sensitive by default, so using "OK" or "ok" will return the same result.
Related formulas
Multiple cells have same value case sensitive
All cells in range are blank
Related functions
COUNTIF Function
The Excel COUNTIF function returns the count of cells in a range that meet a single condition. The generic syntax is COUNTIF(range, criteria), where "range" contains the cells to count, and "criteria" is a condition that must be true for a cell to be counted. COUNTIF can be used to count cells...
AND Function
The Excel AND function is a logical function used to test multiple conditions at the same time. AND returns TRUE only if all the conditions are met. If any conditions are not met, the AND function returns FALSE. The AND function is commonly used with other...
