Question: how to change id number to date of birth in excel?
Answer: Supposing the ID number is shown as 7908050074059, and the first two numbers indicate birth year, the third and fourth numbers are the birth day, and then the following two numbers are the birth month, you can use this formula: =MID(A2,5,2)&"/"&MID(A2,3,2)&"/"&MID(A2,1,2), press Enter key, and drag fill handle down to ...