The difference between kennen & wissen | "to know" in German

a2.2 vocabulary

Quick Test First

How would you say "Do you know the way?" in German — "Kennst du den Weg?" or "Weißt du den Weg?" (Answer: both are actually correct here — exactly the kind of exception that makes this topic tricky.)

In English, "to know" is just one verb. In German, you have two: kennen and wissen. Mixing them up is one of the most common mistakes German learners make, but the rule behind them is actually simple once you see it laid out.

Kennen: for people, things, and places

Kennen is used when you know a person, a thing, or a place — in other words, whenever it's followed by a noun or a name. It always takes a direct (accusative) object.

"Kennst du Nico?" — Do you know Nico? → Nico is a person, so: "Ja, ich kenne ihn."
"Kennt ihr den Film?" — Do you know the movie? → Film is a thing, so: "Ja, wir kennen ihn."
"Kennst du Berlin gut?" — Do you know Berlin well? → Berlin is a place, so: "Ja, Berlin ist meine Heimatstadt."

Wissen: for knowledge and information

Wissen is used for facts or information — a more abstract idea. The easiest way to recognize when you need wissen: it's almost always paired with a subordinate clause introduced by words like dass, wie, wo, or ob.

"Weißt du, wie alt er ist?" — Do you know how old he is? → "Nein, ich weiß nicht, wie alt er ist."
"Wisst ihr, ob der Film gut ist?" — Do you know if the movie is good? → "Ja, er ist sehr spannend."
"Weißt du, wo das Brandenburger Tor ist?" — Do you know where the Brandenburg Gate is? → "Klar, weiß ich das."

Notice the pattern: in every wissen example, the sentence continues with a dass/wie/wo/ob-clause rather than jumping straight to a noun.

The exceptions

A handful of nouns work with either verb, and both are considered correct:

die Antwort (the answer): "Ich kenne" or "ich weiß die Antwort." — I know the answer.
der Name (the name): "Ich kenne" or "ich weiß deinen Namen." — I know your name.
der Weg (the way): "Ich kenne" or "ich weiß den Weg." — I know the way.

Bonus phrases

"Ich weiß es nicht." — I don't know (it). Don't forget the -s on es when it stands as a complete phrase on its own.
If nicht is followed by a clause ("ich weiß nicht, ob..." / "ich weiß nicht, wie..."), you drop the es.
"Wer weiß?" — Who knows?

Frequently Asked Questions

What's the main difference between kennen and wissen?

Kennen is used for people, things, and places — it's followed by a direct noun or name. Wissen is used for facts and information, and is almost always followed by a subordinate clause with words like dass, wie, wo, or ob.

Can kennen and wissen both be correct for the same sentence?

Yes, for a small set of nouns — die Antwort (answer), der Name (name), and der Weg (way) — both verbs are acceptable.

Why do German learners mix up kennen and wissen so often?

Because English uses just one verb, "to know," for both meanings, so English speakers don't automatically distinguish between "knowing" a person/place/thing and "knowing" a fact.

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