"Think" expresses an opinion or assumption; "believe" expresses conviction or faith.
To have an opinion, suppose something, or process information mentally.
I think we should leave early to avoid traffic.
Creo que deberiamos salir temprano para evitar el trafico.
What do you think about the new proposal?
¿Que piensas sobre la nueva propuesta?
I did not think it would rain today. I forgot my umbrella.
No pense que fuera a llover hoy. Olvide mi paraguas.
To be convinced something is true, or to have faith in someone or something.
I believe everyone deserves a second chance.
Creo que todos merecen una segunda oportunidad.
Do you believe in ghosts? My roommate says he saw one.
¿Crees en los fantasmas? Mi companero dice que vio uno.
She believes her son is innocent, despite the evidence.
Ella cree que su hijo es inocente, a pesar de la evidencia.
Common mistake
Both translate to "creer" in Spanish, causing confusion. "I think it will rain" = my impression or opinion. "I believe it will rain" = I am convinced (stronger). In normal conversation, "I think" is far more common for everyday opinions. Using "I believe" for mundane opinions can sound dramatic.
Trick to remember it
Conviction scale: think (50-70% certain) < believe (70-90% certain) < know (100%). "I think she is right" = it seems so. "I believe she is right" = I am fairly convinced. "I know she is right" = absolute certainty. Use "think" for everyday opinions; reserve "believe" for deeper convictions.
Quick rule
Think = opinion / assumption (neutral tone). Believe = conviction / faith (stronger tone).
Did you know?
"I cannot believe it!" and "I cannot think of it!" are near-opposites in usage: "I cannot believe it" = I am stunned this is real (surprise / disbelief). "I cannot think of it" = I cannot recall it / it is not coming to mind. Same negation, different verbs, completely different meanings.
Exercise 1 · Pick the right one
_____ in yourself. You are more capable than you know.
Exercise 2 · Pick the right one
What do you _____ about the new boss? Does she seem good?
Exercise 3 · Form the word
Think = opinion / assumption (neutral tone). Believe = conviction / faith (stronger tone).
Both translate to "creer" in Spanish, causing confusion. "I think it will rain" = my impression or opinion. "I believe it will rain" = I am convinced (stronger). In normal conversation, "I think" is far more common for everyday opinions. Using "I believe" for mundane opinions can sound dramatic.
Conviction scale: think (50-70% certain) < believe (70-90% certain) < know (100%). "I think she is right" = it seems so. "I believe she is right" = I am fairly convinced. "I know she is right" = absolute certainty. Use "think" for everyday opinions; reserve "believe" for deeper convictions.
Bryan López
Founder of SpeakUP Academy