身份证测算年龄通常是通过身份证号码中的出生日期来计算一个人的年龄。下面是一个Python函数，它可以接收一个身份证号码作为输入，并返回该人的年龄。
```python
from datetime import datetime
def calculate_age(id_number):
birth_year = int(id_number[6:10])
birth_month = int(id_number[10:12])
birth_day = int(id_number[12:14])
birth_date = datetime(birth_year, birth_month, birth_day)
today = datetime.today()
age = today.year - birth_year - ((today.month, today.day) < (birth_month, birth_day))
return age
# 示例使用
id_number = '123456199001011234' # 假设的身份证号码
age = calculate_age(id_number)
print(f"The age is: {age}")
```
如果你需要在Excel中使用这个功能，你可以将上述Python代码转换成VBA宏（Visual Basic for Applications）。以下是一个VBA函数，可以在Excel中使用它来计算年龄：
```vb
Function CalculateAge(idNumber As String) As Integer
Dim birthYear As Integer
Dim birthMonth As Integer
Dim birthDay As Integer
Dim birthDate As Date
Dim today As Date
Dim age As Integer
birthYear = CInt(Mid(idNumber, 7, 4))
birthMonth = CInt(Mid(idNumber, 11, 2))
birthDay = CInt(Mid(idNumber, 13, 2))
birthDate = DateSerial(birthYear, birthMonth, birthDay)
today = Date
age = Year(today) - birthYear - (Month(today) < Month(birthDate) Or (Month(today) = Month(birthDate) And Day(today) < Day(birthDate)))
CalculateAge = age
End Function
' 示例使用：
' 假设你已经在Excel中输入了身份证号码到单元格A1
' 你可以在另一个单元格中输入以下公式来计算年龄：
' =CalculateAge(A1)
```
在Excel中，你需要打开开发者工具（如果还没有启用，可以通过“文件”>“选项”>“自定义功能区”启用），然后插入一个新的模块，并将上面的VBA代码粘贴进去。之后，你就可以在Excel中使用`CalculateAge`函数了。
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