How to Say "I Don't Know" in Spanish
No Sé vs. No Conozco
The phrases no sé and no conozco come from the two verbs in Spanish used to express the idea of knowing: saberand conocer. It's important to know the differences between the two because they're not interchangeable.
No sé is used to express a lack of knowledge or ability.
No conozco is used to express a lack of familiarity with a person, place, or thing. Unlike no sé, it cannot be used as a stand-alone phrase.
No Lo Sé
Alternatives to No Sé
No sé is by far the most common way to express your lack of knowledge in Spanish, though there are other ways. Check out the following table for more options!
|I don’t know.|
|Ni idea./ No tengo ni idea.||No idea. / I have no idea.|
|I have no clue / idea.|
Looking to learn more phrases in Spanish? Check these articles out!