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"When" is an adverb which is often translated as "cuándo", and "how many" is a phrase which is often translated as "cuántos". Learn more about the difference between "when" and "how many" below.
when(
wehn
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
2. (relative)
how many(
hau
meh
-
ni
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. cuántos
How many days will you be out?¿Cuántos días vas a estar fuera?
How many pets do you have?¿Cuántas mascotas tienes?