vs 

QUICK ANSWER
"Whether" is a conjunction which is often translated as "si", and "if" is a conjunction which is also often translated as "si". Learn more about the difference between "whether" and "if" below.
whether()
A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
conjunction
a. si
I don't know whether I am going to do it today or tomorrow. No sé si lo voy a hacer hoy o mañana.
a. si
I'll try to find out whether she's at the office.Voy a tratar de averiguar si está en la oficina.
a.
The following examples show ways to translate this word or phrase without using a direct equivalent.
no direct translation
Alicia has made up her mind - she'll resign, whether or not she gets this other job.Alicia se decidió: va a renunciar, consiga o no el otro trabajo.
Whether you like it or not, I will buy this shirt.Te guste o no, me voy a comprar esta camisa.
Copyright © 2026 Dictionary Media Group, Inc.
if()
A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
conjunction
a. si
If I were a rich woman, I would travel the world.Si yo fuera rica, viajaría por el mundo.
a. si
I do not know if they will like my cooking.No sé si les gustará mi comida.
a. aunque
It is a wonderful car, if rather expensive.Es un carro fabuloso, aunque bastante caro.
b. si bien
She's a good girl, if a little naive.Es una buena chica, si bien un poco inocente.
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
noun
a.
The following examples show ways to translate this word or phrase without using a direct equivalent.
no direct translation
If he enters the race—and that's a big if—he could receive many votes.Si entra a la carrera—y está por verse—podría recibir muchos votos.
The success of this project depends on a lot of ifs.El éxito de este proyecto depende de muchas suposiciones.
ifs
A plural noun indicates that there is more than one person, place, thing, or idea.
plural noun
a.
The following examples show ways to translate this word or phrase without using a direct equivalent.
no direct translation
Do your homework now, or you can't go to the movies. No ifs or buts!Haz la tarea ahora, o no puedes ir al cine. ¡Nada de peros!
Don't worry about the ifs, just enjoy the moment.Olvídate de las dudas y disfruta el momento.
Copyright © 2026 Dictionary Media Group, Inc.