假设身份证号码在A2,则B2输入公式为
=IF(LEN(A2)=15,"19"&MID(A2,7,2)&"-"&MID(A2,9,2)&"-"&MID(A2,11,2),MID(A2,7,4)&"-"&MID(A2,11,2)&"-"&MID(A2,13,2))
假定身份证在A2,取生日的单元格内输入:
=TEXT(TEXT(MID(A2,7,6+(LEN(A2)=18)*2),"#-00-00")*1,"yyyy-mm-dd")
=TEXT((LEN(A1)=15)*19&MID(A1,7,6+(LEN(A1)=18)*2),"#-00-00")