German Question Words – Complete Guide with All Forms, Rules, and Examples

Key takeaways

• German has 9 core question words (W-Wörter) — wer, was, wo, woher, wohin, wann, warum, wie, welcher — each asking for a specific type of information.
• Wer (who) declines across all four cases: wer, wen, wem, wessen — matching the nominative, accusative, dative, and genitive case questions.
• In direct questions, the question word always comes first, followed immediately by the verb, then the subject.
• Welcher/welche/welches (which) declines like a definite article and must agree with the noun it modifies in gender, case, and number.
• Wie combines with adjectives and nouns to form compound questions: wie viel, wie viele, wie lange, wie oft, wie weit.

German question words are the building blocks of any real conversation. They let you ask for names, reasons, times, places, quantities, and descriptions — covering almost everything you need to communicate in German beyond yes/no answers. Unlike English, where "who" stays the same regardless of grammar, the German wer changes form depending on its case role. And welcher (which) declines fully like a definite article.

This guide covers every German question word with its full range of forms, sentence structure rules, connections to the case system, and real example questions for every context. If you want to practice all of these in interactive lessons, explore German on Promova and build conversational fluency step by step.

What are German question words?

German question words — called Fragewörter or W-Wörter — are words that introduce open questions (questions that require a specific answer, not just yes or no). They all begin with the letter W in German, which makes them easy to recognize as a group.

Each question word asks for a specific type of information:

• wer — who (person as subject)
• was — what (thing or action)
• wo — where (location)
• woher — where from (origin)
• wohin — where to (destination)
• wann — when (time)
• warum / wieso / weshalb — why (reason)
• wie — how (manner, description)
• welcher / welche / welches — which (selection from a group)

Why question words matter in everyday German

Question words are essential in practically every real-life context: ordering food, asking for directions, understanding instructions, meeting new people, making travel plans, and conducting business conversations. Without them, you are limited to yes/no exchanges. Once you have the full set of W-words active in your vocabulary, you can ask about virtually anything.

All German question words — detailed guide

wer — who

Wer asks about a person as the subject of a sentence. Uniquely among question words, wer declines across all four cases to match the grammatical role of the person being asked about:

• Nominative — wer? (who? — subject): Wer bist du? — Who are you?
• Accusative — wen? (whom? — direct object): Wen hast du angerufen? — Whom did you call?
• Dative — wem? (to/for whom? — indirect object): Wem hast du das Buch gegeben? — To whom did you give the book?
• Genitive — wessen? (whose? — possession): Wessen Auto ist das? — Whose car is that?

More examples:

• Wer hat das gemacht? — Who did that?
• Wen hast du getroffen? — Who did you meet?
• Wem gehört dieser Schlüssel? — Whose key is this? / To whom does this key belong?

was — what

Was asks about things, actions, ideas, or facts. It does not decline (unlike wer) and stays the same in all positions.

• Was ist das? — What is that?
• Was machst du heute? — What are you doing today?
• Was hast du gegessen? — What did you eat?
• Was bedeutet dieses Wort? — What does this word mean?
• Was denkst du darüber? — What do you think about it?

Was für ein (what kind of) is a common compound: Was für ein Auto hast du? — What kind of car do you have?

wo / woher / wohin — where / where from / where to

German distinguishes three spatial question words where English uses only one:

• wo? — static location (where?): Wo wohnst du? — Where do you live?
• woher? — origin (where from?): Woher kommst du? — Where are you from?
• wohin? — destination (where to?): Wohin gehst du? — Where are you going?

This three-way distinction mirrors the German two-way preposition rule (wo = dative, wohin = accusative). More examples:

• Wo ist die nächste Apotheke? — Where is the nearest pharmacy?
• Woher weißt du das? — Where do you know that from? / How do you know that?
• Wohin fährst du in den Urlaub? — Where are you going on holiday?

wann — when

Wann asks about a specific point or period in time.

• Wann beginnt der Kurs? — When does the course start?
• Wann bist du geboren? — When were you born?
• Wann kommt der Zug an? — When does the train arrive?
• Seit wann lernst du Deutsch? — Since when have you been learning German?
• Bis wann ist die Bibliothek geöffnet? — Until when is the library open?

Note: wann can combine with prepositions: seit wann, bis wann, von wann bis wann.

warum / wieso / weshalb — why

All three mean "why" and are largely interchangeable in everyday use, though there are subtle stylistic differences:

• warum — the most neutral and common: Warum lernst du Deutsch? — Why are you learning German?
• wieso — slightly more colloquial, often implies surprise: Wieso bist du so spät? — Why are you so late?
• weshalb — slightly more formal, often used in writing: Weshalb haben Sie das entschieden? — Why did you decide that?

More examples:

• Warum hast du nicht angerufen? — Why didn't you call?
• Warum ist das wichtig? — Why is that important?

wie — how

Wie asks about manner, description, or quality. It is also highly productive in forming compound question words:

• Wie geht es dir? — How are you?
• Wie heißt du? — What is your name? (lit. How are you called?)
• Wie alt bist du? — How old are you?
• Wie spät ist es? — What time is it?
• Wie komme ich zum Bahnhof? — How do I get to the train station?

Key wie compounds:

• wie viel — how much: Wie viel kostet das? — How much does that cost?
• wie viele — how many: Wie viele Sprachen sprichst du? — How many languages do you speak?
• wie lange — how long: Wie lange dauert der Flug? — How long does the flight take?
• wie oft — how often: Wie oft trainierst du? — How often do you train?
• wie weit — how far: Wie weit ist es bis Berlin? — How far is it to Berlin?

welcher / welche / welches — which

Welcher asks about a specific choice within a known group. Unlike the other question words, it fully declines like a definite article — agreeing with the noun it modifies in gender, case, and number.

Nominative forms: welcher (masc.) / welche (fem.) / welches (neut.) / welche (plural)

• Welcher Zug fährt nach München? — Which train goes to Munich? (masc. nom.)
• Welche Sprache lernst du? — Which language are you learning? (fem. acc.)
• Welches Buch empfiehlst du? — Which book do you recommend? (neut. acc.)
• Welchen Film möchtest du sehen? — Which film would you like to see? (masc. acc.)
• Mit welcher Bahn fährst du? — Which train/tram are you taking? (fem. dat.)

Sentence structure with German question words

In direct questions, German follows a consistent word order:

Question word → verb → subject → rest of sentence

• Was lernst du heute? — What are you learning today?
• Wo wohnt dein Bruder? — Where does your brother live?
• Wann beginnt der Film? — When does the film start?
• Warum bist du so müde? — Why are you so tired?

The verb always comes in second position — immediately after the question word. The subject follows the verb (inversion). This is the same pattern as in any German statement that starts with something other than the subject.

Question words in indirect questions

When a question word introduces an indirect (embedded) question — inside a larger sentence — the verb moves to the end of the clause, not to second position:

• Ich weiß nicht, warum er nicht gekommen ist. — I don't know why he didn't come. (verb at end)
• Kannst du mir sagen, wo der Bahnhof ist? — Can you tell me where the train station is?
• Ich frage mich, was das bedeutet. — I wonder what that means.

Tips for mastering German question words

• Learn wer in all four cases immediately. Wer / wen / wem / wessen — these four forms double as the identification questions for the entire German case system. Mastering them serves two purposes at once: question formation and case recognition.
• Memorize the wo-trio together. Wo, woher, wohin — static location, origin, destination. This three-way distinction is unique to German (English uses only "where") and reflects the same logic as the dative/accusative distinction with two-way prepositions.
• Practice wie compounds as a set. Wie viel, wie viele, wie lange, wie oft, wie weit — learn all five together. They cover the most common everyday quantity and extent questions.
• Drill welcher in context. Because welcher declines, practice it with specific nouns across genders: welcher Zug, welche Stadt, welches Land. Matching it to a noun forces you to think about gender and case simultaneously.
• Practice both direct and indirect question word order. Build pairs: Wo wohnt er? (direct) vs Ich weiß nicht, wo er wohnt. (indirect). The verb position shift is one of the most important structural patterns in German.

Build confidence with German question words on Promova

Promova offers structured question-word lessons with real conversational examples, pronunciation practice, and exercises that move from recognition to active production. You can practice every W-word across different contexts — travel, daily life, work, and social situations — with immediate feedback that accelerates learning.

Final thoughts on German question words

German question words are compact but grammatically rich. The declension of wer, the three-way location distinction of wo/woher/wohin, the productive compounding of wie, and the full declension of welcher all make this a topic worth mastering carefully. Once these forms are automatic, you can ask about virtually anything in German — and more importantly, you can understand the answers.