Die and dat show up everywhere in Dutch — pointing at things ("that book", "those people") and joining clauses ("the man who...", "the book that..."). English uses different words for these jobs (that/those for pointing, who/which/that for joining), so it's easy to assume Dutch is just as scattered. It isn't. A single rule, based on the noun's gender, decides between die and dat in both jobs at once. Learn it once and you've solved two grammar topics. For the relative clause in depth, see the Die vs Dat relative pronouns page; for the gender of nouns, see De vs Het.
The one gender rule
Look at the noun die/dat refers to, and ask:
Is it a de-word, or a plural? Or is it a singular het-word?
- de-word (singular) → die
- any plural → die
- singular het-word → dat
In short: de → die, het → dat, and all plurals → die (because every plural noun is a de-word in Dutch). This one test serves the demonstrative and the relative — the gender of the noun is all that matters, not the job die/dat is doing in the sentence.
Use 1: the demonstrative (that / those)
As a demonstrative, die/dat stands before a noun (or alone) and means "that" or "those." Same gender rule:
Die man daar werkt bij ons op kantoor.
That man over there works at our office. (de man → die)
Dat boek moet je echt lezen, het is fantastisch.
You really have to read that book, it's fantastic. (het boek → dat)
Die schoenen staan je goed.
Those shoes suit you. (plural → die)
Notice the trap in the last one: de schoen is a de-word anyway, but even het-word plurals go to die — die kinderen (from het kind), die huizen (from het huis).
Die kinderen maken wel erg veel lawaai.
Those children are making an awful lot of noise. (het kind, but plural → die)
Use 2: the relative pronoun (who / which / that)
When die/dat introduces a relative clause — adding information about a noun just mentioned — it works exactly the same way. The pronoun agrees with the gender of the noun it refers back to (its antecedent), and the clause sends its verb to the end:
De man die hiernaast woont, is muzikant.
The man who lives next door is a musician. (de man → die)
Het boek dat ik gisteren kocht, is al uit.
The book I bought yesterday is already finished. (het boek → dat)
De boeken die op tafel liggen, zijn van mij.
The books that are on the table are mine. (plural → die)
Het meisje dat naast me zat, kwam uit Spanje.
The girl who sat next to me was from Spain. (het meisje → dat)
Head-to-head: the same word, both jobs
The single best demonstration that it's one rule: take a het-word and a de-word, and watch die/dat stay constant across the demonstrative and the relative use.
| Noun | Demonstrative ("that") | Relative ("that/which") |
|---|---|---|
| de auto (de-word) | die auto (that car) | de auto die daar staat (the car that's parked there) |
| het huis (het-word) | dat huis (that house) | het huis dat te koop staat (the house that's for sale) |
| de/het → plural | die huizen (those houses) | de huizen die te koop staan (the houses that are for sale) |
Dat huis daar is het huis dat we bijna gekocht hebben.
That house there is the house we almost bought. (het huis → dat in both the demonstrative and the relative)
Decision flowchart
| The noun is... | Choose | Demonstrative | Relative |
|---|---|---|---|
| singular de-word | die | die stoel | de stoel die... |
| singular het-word | dat | dat raam | het raam dat... |
| plural (any gender) | die | die ramen | de ramen die... |
The only thing you need to know to apply this perfectly is the gender of the noun — which is exactly what De vs Het trains.
Common Mistakes
❌ Dat boeken zijn te duur.
Incorrect — 'boeken' is plural, and all plurals take 'die', regardless of the singular's gender.
✅ Die boeken zijn te duur.
Those books are too expensive.
❌ Het boek die ik las was saai.
Incorrect — 'het boek' is a het-word, so the relative pronoun is 'dat', not 'die'.
✅ Het boek dat ik las was saai.
The book I read was boring.
❌ De man dat naast me zat, snurkte.
Incorrect — 'de man' is a de-word, so it takes 'die', not 'dat'.
✅ De man die naast me zat, snurkte.
The man who sat next to me was snoring.
❌ Die huis is net verkocht.
Incorrect — 'het huis' is a singular het-word, so the demonstrative is 'dat'.
✅ Dat huis is net verkocht.
That house has just been sold.
❌ Die kind huilt al de hele tijd.
Incorrect — singular 'het kind' takes 'dat'; only the plural 'die kinderen' would take 'die'.
✅ Dat kind huilt al de hele tijd.
That child has been crying the whole time.
Key Takeaways
- One gender rule covers both jobs: de-word → die, singular het-word → dat, every plural → die.
- It's the gender of the noun that decides, not whether die/dat is pointing (demonstrative) or joining (relative).
- All plurals take die — even plurals of het-words (het kind → die kinderen).
- Get the noun's gender right and you get die/dat right every time — see De vs Het and the deep relative pronoun page.
Now practice Dutch
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Start learning Dutch→Related Topics
- Die vs Dat: Choosing the Relative PronounB1 — The core relative-pronoun choice in Dutch — die for de-words and all plurals, dat for singular het-words — and why it tracks the noun's gender, not the clause.
- De vs Het: The Definite ArticleA1 — Dutch has two words for 'the': het for neuter singular nouns only, and de for common-gender singulars and ALL plurals. The choice is fixed per noun and drags the demonstratives (dit/dat vs deze/die) and the adjective ending along with it — including the one place an adjective loses its -e: een mooi huis.
- Choosing: Niet or Geen?A1 — A one-question decision guide for Dutch negation — if you're negating an indefinite noun, it's geen; for everything else it's niet — with a flowchart, head-to-head contrasts, and the errors English speakers make.
- Choosing the Perfect Auxiliary: Hebben or Zijn?B1 — A decision guide for the Dutch perfect tense — zijn for changes of place and state (gaan, komen, worden, sterven), hebben for transitives and plain activities — plus the crucial rule that motion verbs flip between the two depending on whether a destination is named.