hay que saber

need to know

→ haber
phrase Rare #26,545
need to know Impersonal phrase used to say that knowing something is necessary or important.
SP: Hay que saber escuchar.
EN: You need to know how to listen.

Solo hay que saber si alguno de nosotros es uno de ellos.

We just need to know if any of us are one of them.

— Los pecadores (2025)

Cuando se hace una apuesta, hay que saber perder.

When you make a bet, you have to know how to lose.

— Astérix y Obélix: Misión Cleopatra (2002)

Solo hay que saber leerlo.

You just have to know how to read it.

— Ahora me ves 3 (2025)

Y para ello hay que saber rezar y perdonar mucho.

And for that, one must know how to pray and forgive a great deal.

— Roma. Ciudad abierta (1945)

Hay que saber controlarse.

You have to know how to control yourself.

— El odio (1995)

Sé todo lo que hay que saber.

I know everything there is to know.

Hay que saber tratarla un poco.

You have to know how to handle it a little.

— Los cuatrocientos golpes (1959)

Escucha, hay que saber adónde van.

Listen, we need to know where they're going.

— Suspiria (1977)

Tom sabe todo lo que hay que saber sobre autos italianos.

Tom knows everything there is to know about Italian cars.