German phrase
Wie viel darf ~ wiegen?
Meaning
How much can ___ weigh?
When to use it
It asks about a weight limit. Use it to check how heavy carry-on luggage may be.
Example dialogue
Wie viel darf mein Handgepäck wiegen?
How much can my carry-on weigh?
Maximal acht Kilogramm.
A maximum of eight kilograms.