Suppose you want to find out how many times particular text or a number value occurs in a range of cells. For example:

If a range contains the number values 5, 6, 7, and 6, the number 6 occurs two times.

If a column contains "Buchanan", "Dodsworth", "Dodsworth", and "Dodsworth", "Dodsworth" occurs three times.
There are several ways to count how often a value occurs.
What do you want to do?
Count how often a single value occurs by using a function
Use the COUNTIF function to perform this task.
Example
The example may be easier to understand if you copy it to a blank worksheet.
How to copy an example

Create a blank workbook or worksheet.

Select the example in the Help topic.
Note: Do not select the row or column headers.
Selecting an example from Help

Press CTRL+C.

In the worksheet, select cell A1, and press CTRL+V.

To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.


Function details
COUNTIF This function counts the number of cells within a range that meet a single criterion that you specify.
Count based on multiple criteria by using the COUNTIFS function
Introduced in Excel 2007, the COUNTIFS function is similar to the COUNTIF function with one important exception: COUNTIFS lets you apply criteria to cells across multiple ranges and counts the number of times all criteria are met. You can use up to 127 range/criteria pairs with the COUNTIFS function. The syntax for the function looks like this:
COUNTIFS(criteria_range1, criteria1, [criteria_range2, criteria2],…)
To learn more about using this function to count with multiple ranges and criteria, see COUNTIFS function.
Count based on criteria by using the COUNT and IF functions together
Let's say you need to determine how many salespeople sold a particular item in a certain region, or you want to know how many sales over a certain value were made by a particular salesperson. You can use the IF and COUNT functions together; that is, you first use the IF function to test a condition and then, only if the result of the IF function is True, you use the COUNT function to count cells.
Example
The example may be easier to understand if you copy it to a blank worksheet.
How to copy an example

Create a blank workbook or worksheet.

Select the example in the Help topic.
Note: Do not select the row or column headers.
Selecting an example from Help

Press CTRL+C.

In the worksheet, select cell A1, and press CTRL+V.

To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.


Note:

It's important to understand that the formulas in the example must be entered as array formulas. After copying the example to a blank worksheet, select the formula cell. Press F2, and then press CTRL+SHIFT+ENTER. If the formula is not entered as an array formula, the error #VALUE! is returned.

For these formulas to work, the second argument to the IF function must be a number.
Function details
COUNT This function counts the number of cells that contain numbers, and counts numbers within the list of arguments.
IF This function returns one value if a condition you specify evaluates to TRUE, and another value if that condition evaluates to FALSE.
Count how often multiple text or number values occur by using functions
Use the IF and SUM functions to do this task:

Assign a value of 1 to each true condition by using the IF function.

Add the total, by using the SUM function.
Example
The example may be easier to understand if you copy it to a blank worksheet.
How to copy an example

Create a blank workbook or worksheet.

Select the example in the Help topic.
Note: Do not select the row or column headers.
Selecting an example from Help

Press CTRL+C.

In the worksheet, select cell A1, and press CTRL+V.

To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.


Note: The formulas in this example must be entered as array formulas. Select each cell that contains a formula, press F2, and then press CTRL+SHIFT+ENTER.
Count how often multiple values occur by using a PivotTable report
You can use a PivotTable report to display totals and to count the occurrences of unique values. A PivotTable is an interactive way to quickly summarize large amounts of data. You can use a PivotTable to expand and collapse levels of data to focus your results, and drill down to details from the summary data for areas that are of interest to you. In addition, you can move rows to columns or columns to rows ("pivoting") to see different summaries of the source data.
1. Source data, in this case, from a worksheet
The source values for Qtr3 Golf summary in the PivotTable report
The entire PivotTable report
The summary of the source values in C2 and C8 from the source data
Use the following procedure to create a PivotTable report.

Select the column that contains the data. Make sure that the column has a column heading.

On the Insert tab, in the Tables group, click PivotTable.

The Create PivotTable dialog box is displayed.

Click Select a table or range.

Place the PivotTable report in a new worksheet starting at cell A1 by clicking New Worksheet.

Click OK.
An empty PivotTable report is added to the location that you specified with the PivotTable field list displayed. 
In the field section at the top of the PivotTable field list, click and hold the field name, and then drag the field to the Row Labels box in the layout section at the bottom of the PivotTable field list.

In the field section at the top of the PivotTable field list, click and hold the same field name, and then drag the field again to the Values box in the layout section at the bottom of the PivotTable Field List.
Note: If your data contains numbers, the PivotTable report totals the entries instead of counting them. To change from the Sum summary function to the Count summary function, select a cell in that column, and then on the Options tab in the Active Field group, click Field Settings, click the Summarize by tab, click Count, and then click OK.