Du vs. Sie in German: Formal and Informal Etiquette Explained

English uses a single word—“you”—for your best friend, your toddler, a group of coworkers, and a federal judge. German splits “you” across two dimensions: relationship (du vs. Sie) and number (singular du vs. plural ihr). Choosing the right pronoun is not just grammar; it signals social respect, boundaries, and belonging across Germany, Austria, and Switzerland.

Understanding the logic behind duzen (saying du) and siezen (saying Sie) removes the guesswork from first introductions, workplace emails, and everyday errands. For the underlying pronoun tables, review our formal vs. informal address grammar guide and register and style reference.

The three German words for “you”

Every German learner needs to keep three forms straight from day one:

1. du (informal singular): Used with one close person—family members, romantic partners, friends, fellow students, children, and colleagues in du-culture workplaces.
2. ihr (informal plural): Used when talking to two or more people whom you would individually call du—such as a group of friends, siblings, or teammates.
3. Sie (formal singular AND plural): Used with one or more adults you do not share a du relationship with—strangers on the street, shop staff, municipal clerks at the Bürgeramt, doctors, police officers, clients, and formal supervisors.

Notice the grammar twist with Sie: grammatically, formal Sie borrows the third-person plural forms (sie = “they”), distinguished in writing by a capital S. Whenever you address someone formally, Sie, Ihnen (dative), and Ihr/Ihre (possessive) are always capitalized, regardless of where they sit in the sentence.

You can test how every verb changes across du, ihr, and Sie in our German Verb Conjugator, or inspect sentence word order in the Sentence Analyzer.

When to use du vs. Sie in daily DACH life

If you grew up speaking English, Sie can feel stiff at first. In German-speaking countries, however, Sie does not mean coldness or hostility—it expresses healthy polite respect between independent adults. Here is how modern German speakers divide the territory:

Default Sie situations

• Strangers and service staff: Cashiers, waiters, bus drivers, receptionists, and passersby you ask for directions (“Entschuldigung, können Sie mir helfen?”). Exception: staff in very casual youth-oriented cafés, gyms, or bars often greet young customers with du.
• Authorities and officials: Clerks at the Bürgeramt or Ausländerbehörde, police officers, teachers speaking with parents, university administrators, and doctors. Calling a police officer du can even be treated as an insult in formal disputes.
• Traditional corporate and client work: Banks, law firms, medicine, public administration (öffentlicher Dienst), and first-time meetings with external business clients.
• Neighbors: Especially older neighbors or apartment buildings in quieter residential areas. Many neighbors happily stay on friendly Sie + surname terms (“Guten Tag, Frau Becker!”) for years.

Default du situations

• Family, partners, and close friends: Always du (or ihr in a group).
• Children and teenagers: Adults address children up to roughly age 14–16 with du. Once teenagers hit upper secondary school (Oberstufe) or vocational training, teachers often shift to Sie—or use the Hamburger Sie described below.
• Universities and peer spaces: Fellow students (Kommilitonen), flatmates in a WG (Wohngemeinschaft), sports clubs (Sportvereine), hiking trails, and hobby groups almost universally default to du. (Note that students still usually address professors with Sie.)
• Tech, startups, agencies, and retail teams: Many modern workplaces in Berlin, Munich, Vienna, and Zurich explicitly maintain an all-company Du-Kultur, often even in job ads (“Wir bieten eine offene Du-Kultur”).

Name pairings and regional hybrids

In textbook German, du pairs with a first name (“Hallo, Lukas!”) and Sie pairs with Herr/Frau + surname (“Guten Tag, Herr Weber!”). However, real-life DACH etiquette includes two famous middle grounds:

• Das Hamburger Sie (First name + Sie): Common in media, agencies, universities, and customer-facing companies where everyone uses first names, yet hierarchy or professional distance remains: “Frau Anna, haben Sie kurz Zeit?” or “Lukas, könnten Sie mir die Datei schicken?” (The IKEA-inspired trend in Germany has made first-name-du more common, though Vorname + Sie still surfaces in older firms and senior-junior mentoring.)
• Das Münchner Du (Title/Surname + du): Historically heard in Bavaria and traditional workshops or long-standing retail shops, where people keep formal surnames out of habit while switching to du: “Herr Huber, kannst du mir mal das Paket rüberreichen?”

In Austria, formal titles carry extra social weight. In traditional Viennese settings, pharmacies, or official letters, people may include academic titles such as Herr Doktor, Frau Magistra, or Frau Ingenieur alongside Sie. In Switzerland, standard etiquette mirrors Germany, though many Swiss offices adopt du rapidly while retaining polite verbal hedging (“Hätten Sie vielleicht kurz Zeit?” / “Könntest du mir kurz helfen?”).

How to switch from Sie to du (das Du anbieten)

Never switch unilaterally from Sie to du mid-conversation—doing so without agreement feels presumptuous. Instead, German follows a clear protocol called jemandem das Du anbieten (to offer someone the du):

1. Wait for the right initiator: Traditionally, the older person in private life or the higher-ranking person in a company makes the offer. Between peers of similar age and rank, either side may gently suggest it once a warm rapport is established.
2. Use a natural invitation phrase:
   • “Wollen wir uns duzen?” (Shall we use du with each other?)
   • “Wir können gern beim Du bleiben.” (We can gladly stick with du.)
   • “Ich bin übrigens Lukas—wir sagen hier alle Du.” (By the way, I’m Lukas—we all use du here.)
3. Accept warmly (or politely keep Sie):
   • Accepting: “Sehr gerne! Ich bin Mina.” (Gladly! I’m Mina.)
   • Staying formal (rare, usually only if uncomfortable): “Vielen Dank für das Angebot, aber ich bleibe im Beruf lieber beim Sie.” (Thank you for the offer, but I prefer sticking to Sie at work.)

Once both sides agree, the change is permanent. Switching back to Sie later (jemandem das Sie wieder anbieten) is a major social rupture.

Imperatives and commands: sounding polite, not bossy

Because imperative verbs drop the pronoun in informal du forms (Komm!, Sprich!), learners sometimes accidentally sound abrupt when they mean to be polite. Notice how cleanly adding bitte (please) or a soft particle like mal or doch transforms a command:

• Informal (du): Setz dich! (Sit down! — blunt) → Setz dich doch kurz! (Have a seat!)
• Informal plural (ihr): Kommt rein! (Come in!) → Kommt doch rein! (Come on in!)
• Formal (Sie): Always keeps Sie directly after the verb: Nehmen Sie bitte Platz! (Please take a seat!), Sprechen Sie bitte etwas langsamer. (Please speak a bit more slowly.)

Notice also the common Rechtschreibung (spelling) detail: in emails, letters, and messaging apps, do not capitalize du, dich, dir, dein, ihr, euch, or euer unless they begin a sentence. Capitalizing Du/Ihr is optional only in personal correspondence addressed directly to a friend or relative. Capitalizing Sie, Ihnen, and Ihr in formal contexts, on the other hand, is mandatory everywhere.

Common mistakes English speakers make

• Mixing du and Sie in one sentence: Saying “Hallo Frau Weber, wie geht es dir?” or “Lukas, können Sie mir helfen?” clashes. Match Vorname + du or Herr/Frau Nachname + Sie unless a workplace explicitly practices the Hamburger Sie.
• Forgetting that Sie takes plural verbs even for one person: Say “Sprechen Sie Englisch?”, never “Spricht Sie Englisch?” (which means “Does she speak English?”).
• Saying “Du bist willkommen” or dropping capital Sie in job emails: Using lowercase sie in “Ich danke sie” changes “I thank you (formal)” into “I thank them/her”—and uses the wrong case! The formal dative is always Ihnen (“Ich danke Ihnen”).
• Overthinking ihr vs. Sie for groups: Addressing two friends? Use ihr (“Habt ihr Lust auf Kaffee?”). Addressing two business clients or unknown adults? Use Sie (“Möchten Sie noch etwas bestellen?”).

Explore more everyday politeness formulas in our guides to German greetings and goodbyes and saying thank you, please, and sorry, or check your pronoun placement with personal pronouns in German.