Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
as known that
Grammar usage guide and real-world examplesUSAGE SUMMARY
"as known that" is grammatically correct and can be used in written English.
An example of this phrase in use would be: "As known that the Amazon rainforest is home to many unique species of plants and animals."
⚠ May contain grammatical issues
Science
Alternative expressions(17)
it is known that
as is widely known
everyone knows that
It is known that
it is well-known that
it's a known fact that
it's common knowledge that
we all know that
it's understood that
it is recognized that
famously
public knowledge
generally accepted knowledge
as everyone knows
commonly known as
widely known fact
as is known
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
5 human-written examples
They add a layer of commercial potency to the insatiable itch — to know oneself as known — that has made Instagram a stupefying success.
News & Media
They require solicitations for proxies to be accompanied by statements informing the shareholder of the measures, so far as known, that will be acted upon at the meeting, and naming and giving detailed information about the directors proposed to be elected or reelected.
Encyclopedias
As known that lac dye consists mainly of different types of laccaic acids, the complex degradation mechanism of lac dye is expected to take place.
Science
As known that with the aid of the oxygen and nitrogen atoms of the pyrrolidone unit, PVP chains can adsorb onto the surface of silver as a capping agent or stabilizer.
Science
As known that the anticoagulants are prescribed to embolic stroke patients, the frequency of atrial fibrillation was higher in the group D and A compared with the group P (Table 1).
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
That's my port ear and that ring tells them as knows that I been east round Cape Horn.
News & Media
As far as she knew, that was as far as it would go.
News & Media
[Pause.] As far as I know, that's true.
News & Media
And as far as he knows, that's what happened.
News & Media
As far as Iconis knew, that was that.
News & Media
As far as he knows, that has all-party support.
News & Media
Expert writing Tips
Best practice
Avoid using "as known that" in formal writing. Opt for grammatically correct alternatives like "it is known that" or "as is widely known" to maintain clarity and credibility.
Common error
The phrase "as known that" often results from a misunderstanding of English grammar rules. Ensure you use a correct construction such as "as it is known that" or rephrase the sentence to avoid the error.
Source & Trust
85%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "as known that" functions as an incorrect conjunction attempting to introduce a clause based on assumed shared knowledge. This construction deviates from standard English grammar, as highlighted by Ludwig's AI, which flags it as needing correction. Grammatically correct alternatives exist to fulfill this function.
Frequent in
Science
100%
Less common in
News & Media
0%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "as known that" is generally considered grammatically incorrect in standard English. While some instances can be found, particularly in scientific contexts where English might not be the author's first language, it's advisable to avoid this construction. As highlighted by Ludwig AI, using grammatically correct alternatives such as "it is known that" or "as is widely known" will improve clarity and credibility. Sticking to established grammatical norms ensures your writing is clear and effective for your intended audience.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
it is known that
Emphasizes established knowledge with a formal and universally accepted structure.
it is well-known that
Highlights a fact that is widely recognized and acknowledged.
it's a known fact that
Introduces information that is considered undeniably true and generally recognized.
as is widely known
Highlights information that is generally acknowledged and understood.
everyone knows that
Implies universal awareness and common understanding of a specific fact.
it's common knowledge that
Indicates that something is widely understood and accepted without needing explanation.
we all know that
Suggests a shared understanding or awareness among a specific group of people.
it's understood that
Implies a tacit agreement or assumption about a particular situation or fact.
it is recognized that
Highlights that something is officially acknowledged or accepted.
famously
Expresses something that is known by most people.
FAQs
What are some alternatives to "as known that"?
Alternatives include "it is known that", "as is widely known", or "everyone knows that". Choose the one that best fits the context of your sentence.
Is it grammatically correct to say "as known that"?
No, "as known that" is generally considered grammatically incorrect. Correct alternatives should be used for clear and effective communication.
How can I use "it is known that" in a sentence?
You can start a sentence with "it is known that" to introduce a fact or a piece of information that is generally accepted. For example, "It is known that regular exercise is beneficial for health."
What's the difference between "as known that" and "as far as I know that"?
"As known that" is not grammatically correct. "As far as I know that" suggests your knowledge is limited to what you personally are aware of, while "it is known that" indicates a generally accepted fact.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
85%
Authority and reliability
2.8/5
Expert rating
Real-world application tested