Counting in German: 11 to 19

Most learners get to ten without trouble. Eins, zwei, drei are among the first German words anyone meets. Then comes elf, and the neat little system you thought you'd learned wobbles: it isn't einszehn, it's just elf. The teens are the first place counting in German stops being predictable, and they hide a listening trap that will follow you all the way up to ninety.

Here's the good news up front. Only two of the teens are genuinely irregular. The other seven are built from a single, dead-simple rule. The hard part isn't the spelling, it's the ear: dreizehn (13) and dreißig (30) differ by one quiet syllable, and at speed they're easy to confuse. This guide walks the teens one by one, then trains the one ending you actually need to hear.

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Elf and zwölf: the two you just memorise

German, like English, has two leftover words for 11 and 12 that don't follow any pattern:

• elf → 11 (sounds like "elf", same as the English word)
• zwölf → 12 (sounds like "tsvurlf", with the rounded ö vowel)

There's no logic to reverse-engineer here, and that's actually a relief: you learn two short words and you're done. If you're curious, both come from old Germanic forms meaning roughly "one left" and "two left", as in one or two left over after counting a full ten on your fingers. English eleven and twelve share the exact same roots, which is why both languages break their own rules at precisely the same two numbers.

For listening, the only thing to watch is zwölf. The ö sound has no English equivalent, so it can land oddly the first few times. Lock the word in as a single shape rather than trying to spell it out as you hear it.

Thirteen to nineteen: digit + zehn

From 13 up, German builds the teens the same way English does, and in the same order: take the digit, stick the word for ten (zehn) on the end. No reversing, no fusing of anything complicated.

Five of the seven are completely regular: hear the digit, hear -zehn, you're done. Only two bend slightly, and they bend in a way worth memorising because the same shortcut returns in the tens:

• sechzehn (16): sechs loses its final s. Not sechszehn.
• siebzehn (17): sieben loses its -en. Not siebenzehn.

If you want the full foundation underneath this, the way 1 to 100 fits together as a system is laid out in German Numbers 1–100: A Listening Guide.

The big trap: -zehn vs -zig (13 vs 30)

This is the part that actually trips people in conversation. Every teen from 13 has a near-twin in the tens, and the only difference is the ending. On paper they look distinct. Spoken at speed, they're a single syllable apart:

The two endings sound like this:

• -zehn → "tsayn". A long, open vowel that ends on a clear n. It rings out.
• -zig → "tsikh". Short and clipped, ending on a soft ich sound (like the end of Scottish "loch", but gentler). It fades.

Notice that the stress in both words sits on the first syllable (DREI-zehn, DREI-ßig), so you can't tell them apart by where the emphasis falls. The entire distinction lives in that unstressed final syllable, the quietest part of the word, which is exactly why it slips past. One ends loud and open; the other ends short and breathy. Tune your ear to the last sound, not the first.

(One spelling footnote that doesn't affect the sound: 30 is written dreißig with -ßig, the lone exception to the -zig spelling. It still sounds like every other "tsikh" ending.)

These seven teen-vs-ten pairs are the highest-value confusions in the whole number system, and they're covered alongside the other classic mix-ups in Drei vs Dreißig: German Number Pairs That Trip Learners Up.

Why the teens aren't "backwards" yet

You may have heard that German numbers are said back to front. That's true, but not here. In dreizehn the three comes first and the ten comes last, the same order as English thirteen. Nothing is flipped.

The reversal only switches on at 21. einundzwanzig is literally "one-and-twenty", ones spoken before tens, and that order holds for every two-digit number above the teens. So think of 13 to 19 as the calm stretch before the road turns: a chance to nail the -zehn sound while the word order is still familiar. When you're ready for the flip, the logic behind it is in Why Are German Numbers Backwards?

Counting in German 11–19 by ear: a listening routine

Reading this table is the easy 20%. Recognising these numbers the instant a native speaker says one, mixed in with everything else, is the other 80%. A short routine that builds it:

1. Drill the two irregulars to reflex. Say elf and zwölf aloud until they need no thought. They're high-frequency (clock times, ages, dates) and they never decode, so front-load them.
2. Practise the pairs, never the singles. Don't learn dreizehn alone. Learn dreizehn / dreißig together, back to back, so your ear is forced to hear the ending that separates them. Same for all seven pairs.
3. Listen for the tail, not the head. The first syllable tells you the digit; the last syllable tells you whether it's a teen or a ten. Train yourself to wait for the ending instead of guessing from the start.
4. Hear them at real speed, in context. A price, an age, a room number: the teen never arrives alone and slow. It's wrapped in a sentence and gone in a heartbeat, so practice that mirrors real speech is what actually transfers.

That last point is the whole reason Zahlhaus exists: real German voices, numbers at conversational speed, and instant scoring so you find out the moment you mistake a dreizehn for a dreißig. It's the fastest way to train your ear for German numbers until the teens land correctly without a second's hesitation.

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