vs 

QUICK ANSWER
"Por qué" is a form of "por qué", a phrase which is often translated as "why". "De qué" is a phrase which is often translated as "what". Learn more about the difference between "de qué" and "por qué" below.
de qué(
deh
 
keh
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. what
Necesito saber de qué se trata.I need to know what it's about.
¿De qué estás hablando?What are you talking about?
b. which
Platicaron acerca de qué escuela iban a elegir para su hija.They talked about which school they would choose for their daughter.
c. from which
¿De qué país eres?Which country are you from?
Copyright © 2025 Dictionary Media Group, Inc.
por qué(
pohr
 
keh
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. why (adverb)
¿Por qué no te gustan las guayabas?Why don't you like guavas?
a. why (adverb)
Me gustaría saber por qué los gatos ronronean.I would like to know why cats purr.
a. what (pronoun)
¡Por qué cascadas más hermosas pasó la lancha!What beautiful waterfalls the skiff passed through!
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
masculine noun
a. reason
No tenían por qué sospechar que yo era un espía.They had no reason to suspect I was a spy.
Copyright © 2025 Dictionary Media Group, Inc.