as far as I know
Que yo sepa, alcanza para comprar la gravitsapa.
As far as I know, it's enough to buy the gravitsapa.
— ¡Kin-Dza-Dza! (1986)
As far as I know, she isn't rich.
As far as I know, he is kind.
Que yo sepa no tengo familia en Boston.
As far as I know, I don't have any family in Boston.
Que yo sepa, ella todavía no está casada.
As far as I know, she's not married yet.
Que yo sepa, no hay tal función.
As far as I know, there is no such function.