ABBABBCCCBCCBCCCBB and I want to know how many times there are three (3) C in a row? in this case the correct answer is 2 times. But I would like to write a code to counts for me. It is possible?
How to count the number of characters, letters and numbers in cell?
When you type a list of data in a cell in Excel as shown as below screenshot, you want to count the total number of all characters, or only the number of the letters, or only the numbers in the cell. Now, I talk about the methods on this count in Excel.
Count times a word appears in an excel cell

If a word appears several times in a cell which needed to be count, usually, you may count them one by one. But if the word appears hundreds of times, the manually counting is troublesome. The Count times a word appears function in Kutools for Excel's Formula Helper group can quickly calculate the count of times a word appear in a cell. Free trial with full features in 60 days! 
Kutools for Excel: with more than 300 handy Excel addins, free to try with no limitation in 60 days. 
Count amount of characters with LEN function
If you want to count the total number of all characters, including numbers, letters and other marks in each cell, do it as follow:
1. Type this formula =LEN(A1) (the Cell A1 indicates the cell you want to count the total characters) into a blank cell, for example, the Cell B1, and click Enter button on the keyboard, and the total number of characters in Cell A1 has been counted. See screenshot:
2. Drag the fill handle to apply this formula to the range cells, and the number of characters in each cell of the list have been counted. See screenshot:
Count amount of all characters except numbers with LEN function
If you only want to the amount of letters excluding numbers in each cell, you can do as follow:
Select a blank cell, for example, the Cell B1, type this formula =LEN(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE
(A1,0,""),1,""),2,""),3,""),4,""),5,""),6,""),7,""),8,""),9,""))(the Cell A1 indicates the cell you want to count amount of letters except numbers, you can change it as you need), then press Enter and drag the fill handle to fill the range you want to use this formula. See screenshot:
Count amount of only numbers with LEN function
Select a blank cell, for example, the Cell B1, type this formula =SUM(LEN(A1)LEN(SUBSTITUTE(A1,{1,2,3,4,5,6,7,8,9,0},))) (the Cell A1 indicates the cell you want to count only amount of numbers, you can change it as you need), then press Enter and drag the fill handle to fill the range you want to use this formula. See screenshot:
Count amount of letters and numbers with function
With this function, you not only can know how many letters or numbers in the string of the cell, but also know the orders of the letters and numbers.
1. Hold ALT button and press F11 on the keyboard to open a Microsoft Visual Basic for Application window.
2. Click Insert > Module, and copy the VBA into the module.
VBA: Count amount of letters and numbers with function
Function AlphaNumeric(pInput As String) As String 'Updateby20140303 Dim xRegex As Object Dim xMc As Object Dim xM As Object Dim xOut As String Set xRegex = CreateObject("vbscript.regexp") xRegex.Global = True xRegex.ignorecase = True xRegex.Pattern = "[^\w]" AlphaNumeric = "" If Not xRegex.test(pInput) Then xRegex.Pattern = "(\d+[az]+)" Set xMc = xRegex.Execute(pInput) For Each xM In xMc xOut = xOut & (xM.Length & IIf(IsNumeric(xM), "N", "L")) Next AlphaNumeric = xOut End If End Function
3. Save the code and close the window, and type this formula =AlphaNumeric(A1) ( the Cell A1 indicates the cell you want to count, you can change it as you need) into a blank cell, then press Enter and drag the fill handle to fill the range you want to use this formula. See screenshot:
Tip:
(1) The "L" indicates letter and "N" indicates number.
(2) This function does not work with cells containing special marks, such as !, @, #, $, %, ^, &, etc.
Count the number of a specific character with COUNTCHAR function
If you want to count the number of a specific character in a string, for example, in the string “I want to count the number of a specific in a string”, I want to count the number of character “n”, how can you do?
In this case, I introduce Kutools for Excel’s COUNTCHAR function for you.
Kutools for Excel, with more than 300 handy functions, makes your jobs more easier.  
After installing Kutools for Excel, please do as below:（Free Download Kutools for Excel Now!)
1. Type the character you want to count in a cell, see screenshot:
2. Then select a blank cell to put the result and select a blank cell which will put the counting result, and click Kutools > Kutools Functions > Statistical & Math > COUNTCHAR. See screenshot:
3. Then in the popping Function Arguments dialog, select the string into Within_text box, and select the character cell into the Find_text box. Then you can see the counting result appears in the dialog.
4. Click OK, now the result is put in the cell you select.
In Kutools Functions, you can count data by background or font color, you can sum values by same background or font color, you can convert time to decimal hours/minute/seconds and so on.
Count the times of a specific character appears in a string
Sum numbers in an excel cell

Sometimes, there is a series of numbers in a cell needed to be summed together, for example, 923149, sum is 28. In Excel, there is no builtin function except sum numbers one by one manually. However, the Sun numbers in a cell function in Kutools for Excel's Formula Helper group can quickly calculate total number of numbers in a cell. Free trial for 60day with full features! 
Kutools for Excel: with more than 300 handy Excel addins, free to try with no limitation in 60 days. 
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