no sé cuántos

I don't know how many

→ no
phrase Uncommon #21,183
I don't know how many Used to refer to an unknown number of things, often in a casual way.
SP: No sé cuántos libros tiene en casa.
EN: I don't know how many books she has at home.

No sé cuántos somos.

I don't know how many of us there are.

— The Internship (2026)

No sé cuántos.

I don't know how many.

— Cuentos de Tokio (1953)

No sé cuántos eran exactamente.

I don’t know exactly how many there were.

— Dil se.. (1998)

No sé cuántos van a soportar esta situación.

I don't know how many people will be able to endure this situation.