Cuál is the Spanish question word for picking one (or several) out of a set you both know exists. It looks like a translation of English which — and in roughly half its uses it is — but the other half is exactly where English-speakers fall: every time you say "what is your name", "what is the capital", "what is the difference", Spanish uses cuál, not qué. The single most useful piece of grammar an A2 learner can fix is the qué/cuál line, and this page is built around drawing it precisely.
The two forms: cuál and cuáles
Cuál has two forms, distinguished by number: singular cuál and plural cuáles. There is no gender distinction — unlike cuánto/cuánta/cuántos/cuántas, cuál does not agree with the gender of the noun it refers to. Both forms carry the written accent in every interrogative and exclamative use, just like every other question word in Spanish.
¿Cuál te gusta más?
Which one do you like more? — Singular: picking one item.
¿Cuáles son los tuyos?
Which ones are yours? — Plural: picking multiple items.
De los pisos que has visto, ¿cuál te gusta más?
Of the flats you've seen, which one do you like the most? — Singular cuál to pick one from a named set.
No sé cuáles llevarme.
I don't know which ones to take. — Embedded question; cuáles still carries its accent.
The core rule: cuál asks for selection from a set
The deep logic of cuál is this: it presupposes a finite set of options that both speaker and listener can identify, and it asks the listener to pick from it. Qué in contrast is open-ended — it asks about anything, with no prior set assumed.
- ¿Qué quieres beber? — open question, no set assumed (you might invent something).
- ¿Cuál quieres? — there are specific drinks in front of you; pick one.
¿Cuál prefieres, el rojo o el azul?
Which one do you prefer, the red one or the blue one? — Explicit two-item set.
Tengo dos entradas para el sábado. ¿Cuál quieres?
I've got two tickets for Saturday. Which one do you want? — The set is the two tickets; cuál picks one.
Cuál + de + explicit selection pattern
When you want to spell out the set you're choosing from, the formula is ¿cuál(es) + de + [the set]? This is the construction English uses which of for, and Spanish uses it the same way — but in Spanish it is the most natural way to ask "which" in many situations where English would just say which book / which colour / which one.
¿Cuál de estos libros te parece más interesante?
Which of these books seems most interesting to you?
¿Cuáles de tus amigos vienen a la cena?
Which of your friends are coming to dinner?
¿Cuál de las dos opciones eliges?
Which of the two options are you choosing?
Cuál does NOT precede a noun directly (in Peninsular Spanish)
Here is the most important rule on this page and the one most English-speakers violate. In Peninsular Spanish, ¿cuál? does not appear directly before a noun in everyday speech and writing. ¿Cuál libro lees? is not how a Spaniard asks "Which book are you reading?" — they say ¿Qué libro lees? This is the opposite of what English grammar would predict.
- English: which + noun → "which book", "which colour", "which restaurant"
- Spanish (Peninsular): qué + noun → qué libro, qué color, qué restaurante
- Spanish (Latin America): cuál libro, cuál color is widespread — but in Spain it sounds Latin American.
✅ ¿Qué libro lees?
Which book are you reading? — Qué + noun is the Peninsular default.
❌ ¿Cuál libro lees?
Sounds Latin American or non-native in Spain. Use ¿qué libro? instead.
✅ ¿Qué color prefieres?
Which colour do you prefer?
✅ ¿Cuál de los colores prefieres?
Which of the colours do you prefer? — If you want to use cuál, attach it to the set with de.
The pattern is: bare cuál (a pronoun, standing alone) or cuál de + noun (with the set spelled out) — never cuál + bare noun as an attributive adjective.
With copulas (ser/estar): the crucial difference from qué
This is the use of cuál that catches almost every English-speaker. When you ask "What is X?" and X is a noun whose identity you want, Spanish uses ¿Cuál es…?, not ¿Qué es…? — except when you genuinely want a definition.
- ¿Cuál es tu nombre? — What is your name? (Pick the right one out of all possible names.)
- ¿Qué es un nombre? — What is a name? (Define the concept for me.)
¿Cuál es la capital de España?
What is the capital of Spain? — Specific answer expected (Madrid). Cuál, not qué.
¿Cuál es tu número de teléfono?
What's your phone number? — Pick one number out of all possible numbers.
¿Cuáles son tus libros favoritos?
What are your favourite books? — Multiple specific items expected; cuáles.
¿Cuál es la diferencia entre 'ser' y 'estar'?
What's the difference between 'ser' and 'estar'? — Specific answer expected; cuál es la diferencia is the fixed formula.
The English intuition fails because English uses what in both situations and only Spanish forces you to mark the difference. Once you learn to hear "what is X (specifically)?" as ¿cuál es…? and "what is X (define)?" as ¿qué es…?, the contrast clicks.
¿Qué hora es? — the fixed-phrase exception
There is one famous exception to the ¿cuál es…? rule for identification: ¿Qué hora es? ("What time is it?"). Logically this should be ¿Cuál es la hora? — you're picking a specific time. But the construction is a fixed idiom and Spaniards say ¿qué hora es? universally. ¿Cuál es la hora? is technically grammatical but sounds odd, almost like asking for a philosophical pronouncement on time.
¿Qué hora es?
What time is it? — Fixed phrase. Memorise it as a chunk.
¿A qué hora quedamos?
What time shall we meet up? — Again qué hora, never cuál hora.
The exception extends to a few other set phrases where a specific time, day, or kind of thing is asked about with qué: ¿qué día es hoy? ("what day is it today?"), ¿qué año estamos? ("what year is it?"). These are fixed idioms; don't reverse-engineer a rule from them.
Embedded questions: no sé cuál…
Like qué, cuál keeps its accent inside indirect questions. The criterion is meaning, not punctuation.
No sé cuál elegir.
I don't know which one to choose. — Embedded question; cuál with accent.
Dime cuáles son tus condiciones.
Tell me what your conditions are. — Embedded; cuáles with accent.
Me pregunto cuál habrá sido la causa.
I wonder what the cause was. — Subjunctive-future after pregunto; cuál still carries its accent.
Cuál in exclamatives (literary only)
Unlike qué, cuál in exclamative use is now restricted to literary or archaic registers in Peninsular Spanish. You may meet it in novels, poetry, or older texts; you will essentially never produce it in conversation.
¡Cuál fue mi sorpresa al verlo allí!
What was my surprise on seeing him there! — Literary register; modern speech would say ¡Cómo me sorprendió verlo allí! (literary)
For practical purposes, treat cuál as interrogative only.
Comparison table: qué vs cuál
| Situation | Use | Example |
|---|---|---|
| "What is X?" — asking for a definition | ¿Qué es…? | ¿Qué es un autónomo? (What's a freelancer?) |
| "What is X?" — asking for a specific identification | ¿Cuál es…? | ¿Cuál es tu dirección? (What's your address?) |
| Before a noun ("which book/colour/day") | ¿Qué + noun? | ¿Qué libro lees? |
| Choosing from a named set | ¿Cuál de + noun? | ¿Cuál de los libros prefieres? |
| Standalone "which one?" | ¿Cuál? | ¿Cuál quieres? |
| Open-ended "what?" | ¿Qué? | ¿Qué quieres? |
| What time is it? | ¿Qué hora es? | Fixed idiom; cuál would be wrong. |
Common mistakes
❌ ¿Qué es tu nombre?
Wrong — asks 'what is a name' rather than 'which name is yours'.
✅ ¿Cuál es tu nombre?
What's your name? — Pick the specific name out of the set of all possible names. (Conversational Spaniards usually say ¿cómo te llamas? instead, but ¿cuál es tu nombre? is the formal alternative — never ¿qué es tu nombre?)
❌ ¿Qué es la capital de España?
Wrong — asks for a definition of 'capital', not for the specific city.
✅ ¿Cuál es la capital de España?
What is the capital of Spain? — Specific answer (Madrid).
❌ ¿Cuál libro lees?
Sounds Latin American or non-native in Peninsular Spanish. Cuál does not modify nouns directly in Spain.
✅ ¿Qué libro lees? / ¿Cuál de los libros lees?
Which book are you reading? — Either qué + noun or cuál de + noun, never bare cuál + noun in Spain.
❌ ¿Cuál hora es?
Wrong — qué hora is a fixed idiom.
✅ ¿Qué hora es?
What time is it? — Memorise this as a chunk.
❌ No sé cual elegir.
Missing accent. Embedded questions still take the written accent.
✅ No sé cuál elegir.
I don't know which one to choose.
❌ ¿Cual son los tuyos?
Missing accent and wrong number — son is plural, so cuál must be cuáles.
✅ ¿Cuáles son los tuyos?
Which ones are yours? — Cuáles agrees in number with son.
Key takeaways
- Cuál picks one (or several) from a set that both speakers can identify. Cuáles is the plural; there is no gender distinction.
- ¿Cuál es…? is the formula for "what is X?" when you want a specific identification (a name, a number, a capital, a difference, a reason).
- ¿Qué es…? asks for a definition, not an identification.
- In Peninsular Spanish, cuál does not directly modify a noun. Use qué + noun (¿qué libro?) or cuál de + noun (¿cuál de los libros?).
- The famous exception is ¿Qué hora es? — a fixed idiom.
- Both cuál and cuáles keep their written accent in every interrogative use, including embedded questions (no sé cuál…).
- Plural agreement is required: ¿Cuáles son…? with plural son, never ¿Cuál son…?
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