1.啟動Excel 2003（其它版本請仿照操作），開啟相應的工作表；

2.執行“工具→巨集→Visual Basic編輯器”命令（或者直接按“Alt+F11”組合鍵），進入Visual Basic編輯狀態；

3.執行“插入→模組”命令，插入一個新模組。再雙擊插入的模組，進入模組程式碼編輯狀態；

4.將程式碼輸入其中；

 1 Function pinyin(p As String) As String
 2 i = Asc(p)
 3 Select Case i
 4 Case -20319 To -20284: pinyin = "A"
 5 Case -20283 To -19776: pinyin = "
 
B"
 6 Case -19775 To -19219: pinyin = "C"
 7 Case -19218 To -18711: pinyin = "D"
 8 Case -18710 To -18527: pinyin = "E"
 9 Case -18526 To -18240: pinyin = "F"
10 Case -18239 To -17923: pinyin = "G"
11 Case -17922 To -17418: pinyin = "H"
12 Case -17417 To -16475: pinyin = "J"
13 Case -16474 To -16213: pinyin = "
 
K"
14 Case -16212 To -15641: pinyin = "L"
15 Case -15640 To -15166: pinyin = "M"
16 Case -15165 To -14923: pinyin = "N"
17 Case -14922 To -14915: pinyin = "O"
18 Case -14914 To -14631: pinyin = "P"
19 Case -14630 To -14150: pinyin = "Q"
20 Case -14149 To -14091: pinyin = "R"
21 Case -14090 To -13319: pinyin = "
 
S"
22 Case -13318 To -12839: pinyin = "T"
23 Case -12838 To -12557: pinyin = "W"
24 Case -12556 To -11848: pinyin = "X"
25 Case -11847 To -11056: pinyin = "Y"
26 Case -11055 To -2050: pinyin = "Z"
27 Case Else: pinyin = p
28 End Select
29 End Function
30 Function getpy(str)
31 For i = 1 To Len(str)
32 getpy = getpy & pinyin(Mid(str, i, 1))
33 Next i
34 End Function

5.程式碼輸入完成後，關閉Visual Basic編輯視窗，返回Excel編輯狀態；

6.自定義函式就可以用了，如：輸入公式：=getpy(A2)

7.生成後是大寫，如需大小寫轉換可用以下函式：
轉換為小寫：=LOWER(字串)
轉換為大寫：=UPPER(字串)
首字母大寫：=PROPER(字串)

轉自：資訊來源