Por qué usually asks “why”; porque usually gives a reason with “because.” ¿Por qué estudias español? Porque quiero hablar con mi familia: “Why are you studying Spanish? Because I want to talk with my family.” Two additional spellings, porqué and por que, have their own grammatical jobs. Learn the common question-and-answer pair first, then use the sentence structure to recognize the other forms.
Use por qué to ask for a reason
Por qué has two words and an accent: ¿Por qué llegas tarde? means “Why are you arriving late?” ¿Por qué está cerrada la tienda? means “Why is the shop closed?” The question asks for the cause or explanation of the situation.
It can also appear in a suggestion: ¿Por qué no descansamos?, “Why don’t we take a break?” You are not necessarily requesting a detailed explanation of why resting has not happened. The words still form a question. Practice the short beginning ¿Por qué…? aloud and then finish it with something you actually want to know.
Use porque to give the reason
Porque is one word without an accent: Llego tarde porque el autobús no viene, “I am arriving late because the bus is not coming.” It connects the situation with its explanation. A short answer works too: Porque estoy cansada, “Because I am tired.”
The distinction is about the word’s function, not simply “questions versus statements.” You can include porque inside a question: ¿Estás contenta porque aprobaste el examen?, “Are you happy because you passed the exam?” The question marks surround the whole sentence, but porque still introduces the proposed reason. Looking only at punctuation would give you the wrong spelling.
An indirect “why” keeps por qué
No sé por qué se fue means “I do not know why he or she left.” Quiero entender por qué pasa esto means “I want to understand why this happens.” These statements contain an unanswered question about a reason, so the two-word accented spelling remains.
Compare No vino porque estaba enfermo, “He did not come because he was ill.” Here the reason is supplied, rather than asked about. A useful editing check is to read the meaning aloud in English: are you introducing “why” or supplying “because”? That check helps with these frequent uses, although the two less common spellings need a grammatical check as well.
El porqué is a noun meaning “the reason”
Porqué is one word with an accent when it acts as a noun: No entiendo el porqué de su decisión, “I do not understand the reason for his or her decision.” A determiner such as el, un, or su commonly introduces it. The plural is porqués.
For everyday speaking, la razón or el motivo may be easier to use. Compare Quiero saber por qué se fue with Quiero saber el porqué de su salida. Both concern the reason for someone’s departure, but the first contains an indirect question and the second uses a noun phrase. Similar meaning does not mean identical spelling.
Por que belongs to less common sentence structures
Por que, two words without an accent, can arise when a construction requires the preposition por and the following clause begins with que. For example, Optaron por que la reunión fuera virtual means “They opted for the meeting to be virtual.” The por belongs to optar por; it is not asking “why.”
It can also contain a relative que: Las razones por que protestaron eran claras, “The reasons for which they protested were clear.” In everyday writing, las razones por las que protestaron is a useful, more explicit version. These structures are less frequent than the why/because pair. Recognize them without making your early conversations unnecessarily complicated.
Practice all four forms with a meaning check
Fill each gap. 1. ¿___ aprendes español? 2. Aprendo ___ me gusta. 3. No sé ___ está aquí. 4. Explícame el ___ de tu decisión. 5. Optamos ___ la clase fuera presencial.
Show answers and reasons
1. Por qué: a direct why question. 2. porque: the reason is supplied. 3. por qué: an indirect why question. 4. porqué: a noun meaning the reason. 5. por que: por belongs to optar por, followed by a clause beginning with que.
Finish with a tiny conversation: ask yourself why you are learning Spanish and answer with a genuine reason. Write both lines with their spaces and accents. Then turn the question into Quiero explicar por qué…. You have practiced the three most useful everyday contexts.
Sources & further reading
Our examples and explanations are written for LSFR learners. These references provide further detail.