to the best of my knowledge

US /tə ðə bɛst əv maɪ ˈnɑlɪdʒ/
UK /tə ðə bɛst əv maɪ ˈnɑlɪdʒ/
"to the best of my knowledge" picture
1.

que yo sepa, hasta donde sé

based on what I know or understand; as far as I know

:
To the best of my knowledge, he has never been late for work.
Que yo sepa, nunca ha llegado tarde al trabajo.
The report is accurate, to the best of my knowledge.
El informe es preciso, que yo sepa.