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"Folio" is a form of "folio", a noun which is often translated as "sheet". "Hoja" is a noun which is often translated as "leaf". Learn more about the difference between "hoja" and "folio" below.
la hoja(
oh
-
hah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
el folio(
foh
-
lyoh
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
a. foolscap paper
Fui a una papelería en México y no tenían folios; solo tenían hojas de tamaño A4.I went to a stationery store in Mexico and they didn't have foolscap paper; they only had A4 sheets.
a. folio
Los folios de ese libro antiguo son muy frágiles.The folios of that ancient book are very delicate.
4. (printing)
a. page heading
Tengo que cambiar el folio de este ensayo porque es muy largo.I need to change the page heading on this essay because it's too long.
b. running title
El folio de este documento no tiene el formato adecuado.The running title of this document is not formatted correctly.