How to Say “I Know It” in Spanish

Lo sé
/lo se/from spelling rules
The English phrase "I know it" is translated into Spanish as Lo sé.
Lo sé is used when you are referring to a piece of information or a fact. For more formal situations, you might use Estoy al tanto to imply you are up to date or informed or Tengo conocimiento de eso to express knowledge of a specific topic.

What does it mean word for word?

The phrase Lo sé is composed of the direct object pronoun lo (it) and the first-person singular present indicative of saber (to know a fact), sé.

Which one should you use?

Use Lo sé when referring to a piece of information or a fact. Do not use it for people, places or complex things known through familiarity. For those, use Lo conozco.

How does it change in a sentence?

To negate the phrase, place no before the object pronoun: No lo sé.

How do you pronounce it?

/lo se/

Did you know?

  • The verb saber used in Lo sé shares an ancient root with the English word 'savvy', which also refers to knowledge and understanding.
  • While Lo sé sounds like a simple statement, placing the word ya before it to make Ya lo sé can signal to the listener that you find their information redundant or annoying.
  • In some Spanish-speaking cultures, replying to a compliment with Lo sé can be perceived as arrogant rather than confident, as modesty is often more culturally valued.

Examples in context

  • Lo sé por él.
    I know it from him.
    This sentence shows how to use Lo sé to express knowing something from a person.
    Tatoeba #5041625 by don_ramon, translation #1871547 by Asma
  • Yo mismo lo sé.
    I know it myself.
    This sentence shows how to use Lo sé to emphasize knowing it yourself.
    Tatoeba #1325707 by marcelostockle, translation #327655 by CM
  • Lo sé con seguridad.
    I know it for sure.
    This sentence shows how to use Lo sé to express certainty.
    Tatoeba #2412436 by marcelostockle, translation #2376017 by CK
  • Me pidieron que estuviera al tanto de los últimos acontecimientos, y sí, estoy al tanto.
    They asked me to stay informed about the latest events, and yes, I know it.
  • En mi experiencia laboral previa, tuve la oportunidad de trabajar con ese software, así que tengo conocimiento de eso.
    In my previous work experience, I had the opportunity to work with that software, so I have knowledge of it.
  • 10 more sentences on Tatoeba

Example conversation

Alejandro and Lucía are discussing a secret party.

  1. Alejandro

    ¿Sabes que hay una fiesta sorpresa?
    Do you know there is a surprise party?
  2. Lucía

    Sí, lo sé.
    Yes, I know it.
  3. Alejandro

    ¿Cómo lo descubriste?
    How did you find out?
  4. Lucía

    Me lo contó un amigo.
    A friend told me.

Sources

  • IPA marked “from spelling rules” is derived from standard Spanish spelling, where Wiktionary gives none.
  • Example sentences: Tatoeba CC BY 2.0 FR.
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Naomi Maya
Naomi MayaHelp make this guide better. Spot a mistake, know another way to say it, or have an example from real life? Share it below.
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