To officially state at customs which goods you are bringing into a country so that they can be cleared through customs.
example
Bei der Einreise müssen Sie alle Waren über einem bestimmten Wert deklarieren.
When entering the country, you must declare all goods above a certain value.
Usage tips
Context clues
You can recognize the meaning of 'deklarieren' (to declare) from the context: at the airport it is about customs (m01), on food packaging it is about ingredients (m02), and in programming it is about variables (m03).
EXAMPLE
Haben Sie etwas zu deklarieren?
Do you have anything to declare?
Formal style
'Deklarieren' (to declare) is a formal and often official word. It is mainly used in written language or in specific specialist contexts such as customs, IT, or legal information.
EXAMPLE
Der Importeur ist verpflichtet, die Herkunft der Ware zu deklarieren.
The importer is required to declare the origin of the goods.
Typical collocations (customs)
In travel and trade contexts, 'deklarieren' (to declare) is often used with words such as 'Waren' (goods), 'Produkte' (products), or 'Geschenke' (gifts), which must be reported when entering a country.
EXAMPLE
Ich muss dieses teure Souvenir wohl am Zoll deklarieren.
I probably have to declare this expensive souvenir at customs.
Typical collocations (IT)
In computer science, the typical objects of 'deklarieren' (to declare) are technical elements such as 'eine Variable' (a variable), 'eine Konstante' (a constant), or 'eine Funktion' (a function).
EXAMPLE
Am Anfang des Programms werden alle nötigen Variablen deklariert.
At the beginning of the program, all necessary variables are declared.
Use with 'als'
When you describe something as something specific, you use the structure 'etwas als etwas deklarieren' (to declare something to be something / as something). The object being declared is in the accusative.
EXAMPLE
Die Organisation deklarierte das Projekt als großen Erfolg.
The organization declared the project a great success.
Compare with
near_synonym · confusable
deklarieren vs erklären
to explain / declare
'erklären' and 'deklarieren' can both mean, in formal situations, that something is stated officially or described as something specific. 'erklären' is much more general and can also be used in everyday language. 'deklarieren' is more specific and sounds more formal or technical. You declare goods at customs, label information on a product, or declare a variable in computer science. Learners may confuse the words because 'deklarieren' can sometimes seem like 'offiziell erklären' (to officially declare). In normal conversations, however, 'erklären' is usually correct; 'deklarieren' only fits in certain official or technical areas.
deklarieren
Am Flughafen muss Ali die teure Kamera beim Zoll deklarieren.
At the airport, Ali has to declare the expensive camera at customs.
erklären
Der Bürgermeister erklärt den Platz nach der Renovierung für eröffnet.
The mayor declares the square open after the renovation.