You can use the following formula to count the number of occurrences by month in an Excel spreadsheet:
=SUMPRODUCT(1*(MONTH(A1:A10)=11))
This particular formula counts the number of dates in the range A1:A10 that occur in the eleventh month (November) of the year.
The following example shows how to use this formula in practice.
Example: Count by Month in Excel
Suppose we have the following dataset that shows the sales of some product on various dates:
Now suppose we’d like to count the number of dates by month.
To generate a list of unique month numbers, we can use the following formula:
=SORT(UNIQUE(MONTH(A2:A15))) We’ll type this formula into cell D2:
Next, we can use the following formula to count the number of dates by month:
=SUMPRODUCT(1*(MONTH($A$2:$A$15)=D2))
We’ll type this formula into cell E2, then copy and paste it into each remaining cell in column E:
From the output we can see:
- Month 1 (January) occurred 4 times.
- Month 2 (February) occurred 3 times.
- Month 3 (March) occurred 1 time.
And so on.
Additional Resources
The following tutorials explain how to perform other common tasks in Excel:
How to Use COUNTIF with OR in Excel
How to Count If Cells Contain Text in Excel
How to Count Unique Values Based on Multiple Criteria in Excel