Not to my knowledge vs not that I know of

Question

What is the difference between "not to my knowledge" and "not that I know of" ? Please free provide some example sentences.

Clive · Accepted Answer

not to my knowledge

phrase?spoken

DEFINITIONS1

1https://www.macmillandictionary.com/dictionary/british/used for https://www.macmillandictionary.com/dictionary/british/answer_2 that you https://www.macmillandictionary.com/dictionary/british/think_1 something is not https://www.macmillandictionary.com/dictionary/british/true_1, although you are not https://www.macmillandictionary.com/dictionary/british/completely https://www.macmillandictionary.com/dictionary/british/certain_1
‘Have the https://www.macmillandictionary.com/dictionary/british/letters been https://www.macmillandictionary.com/dictionary/british/written_1 yet?’ ‘Not to my https://www.macmillandictionary.com/dictionary/british/knowledge.’
https://www.macmillandictionary.com/dictionary/british/not-to-my-knowledge
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to the best of my knowledge?/?belief
phrase
DEFINITIONS1
1. 1https://www.macmillandictionary.com/dictionary/british/used for https://www.macmillandictionary.com/dictionary/british/saying that you https://www.macmillandictionary.com/dictionary/british/think_1 your https://www.macmillandictionary.com/dictionary/british/statement_1 is https://www.macmillandictionary.com/dictionary/british/true_1, because it is https://www.macmillandictionary.com/dictionary/british/base_2 on what you https://www.macmillandictionary.com/dictionary/british/know_1?/?https://www.macmillandictionary.com/dictionary/british/believe_1, but you are not https://www.macmillandictionary.com/dictionary/british/completely https://www.macmillandictionary.com/dictionary/british/sure_1
  To the https://www.macmillandictionary.com/dictionary/british/best_1 of my https://www.macmillandictionary.com/dictionary/british/knowledge, no https://www.macmillandictionary.com/dictionary/british/similar https://www.macmillandictionary.com/dictionary/british/book_1 has been https://www.macmillandictionary.com/dictionary/british/publish.
  https://www.macmillandictionary.com/dictionary/british/to-the-best-of-my-knowledge-belief?q=to+the+best+of+my+knowledge%2Fbelief
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  This should help you. If you want to, try to write a few sentence and show then to us.
2. OK?
3. Clive

Not to my knowledge vs not that I know of

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not to my knowledge