German phrase
In welchem Format soll ich ~ eintragen?
Meaning
In what format should I enter ___?
When to use it
It asks which format to use. It is polite and suits forms or documents.
Example dialogue
In welchem Format soll ich das Datum eintragen?
In what format should I enter the date?
Am besten im Format TT.MM.JJJJ.
Ideally, in the format DD.MM.YYYY.