vs
QUICK ANSWER
"Si" is a form of "si", a conjunction which is often translated as "if". "Ya lo tengo" is a phrase which is often translated as "I already have it". Learn more about the difference between "si" and "ya lo tengo" below.
si(
see
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
ya lo tengo(
yah
loh
tehng
-
goh
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. I already have it
¿Tienes que comprarte un vestido para la boda? - No, ya lo tengo. Me faltan solo los zapatos.Do you need to buy a dress for the wedding? - No, I already have it. I only need a pair of shoes.
b. I already have
Te cambio el cromo de Messi por el tuyo de Ronaldo. - No, el de Messi ya lo tengo también.I'll trade the card of Messi for your card of Ronaldo. - No, I already have the Messi one as well.
a. I know how
La puerta está cerrada con llave. ¿Cómo vamos a salir de aquí? - ¡Ya lo tengo! Podemos utilizar esto como ganzúa.The door is locked. How are we going to get out of here? - I know how! We can use this as a picklock.