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 is known
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "as is known" is correct and usable in written English.
It can be used to refer to information or facts that are already established or widely recognized. Example: "As is known, climate change poses significant challenges to global ecosystems and human societies."
✓ Grammatically correct
Science
News & Media
Encyclopedias
Alternative expressions(20)
it is well-known that
as is widely recognized
as is commonly understood
it has been established that
it's a known fact that
as everyone knows
it is common knowledge that
it's a given that
it's understood that
as has been established
it has long been recognized
as you are well aware
as you may know
as is very well known
as you are aware
as you know
as you probably know
as you may recall
as she knows
we all know that
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
60 human-written examples
As far as is known, yes.
News & Media
"As is known, the mayor is pro-choice".
News & Media
No, at least so far as is known.
News & Media
So far as is known, he never got a reply.
News & Media
As far as is known, Epictetus wrote nothing.
Encyclopedias
As far as is known, life exists only on Earth.
Encyclopedias
As far as is known, the Chinese have built two.
News & Media
So far as is known the play has had no major revival.
News & Media
So far as is known, Duke Ellington never performed "Take the JSQ Train".
News & Media
As far as is known, it was never up in her flat in Harley Street.
News & Media
None of the contemporaneous reports, as far as is known, made any mention of uranium.
News & Media
Expert writing Tips
Best practice
Use "as is known" to introduce information that is generally accepted or considered common knowledge within your target audience. This helps establish a shared understanding and avoids unnecessary explanation.
Common error
Avoid overusing "as is known" in highly formal or academic writing, as it can sometimes come across as condescending or implying the reader should already be familiar with the information. Consider more nuanced introductory phrases like "it has been shown that" or "research indicates that" instead.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "as is known" functions as an introductory phrase or discourse marker. It signals that the speaker or writer is about to present information that is generally accepted or considered common knowledge. Ludwig AI confirms its widespread use across various contexts.
Frequent in
Science
33%
News & Media
32%
Encyclopedias
10%
Less common in
Wiki
6%
Formal & Business
4%
Reference
0%
Ludwig's WRAP-UP
The phrase "as is known" is a versatile introductory phrase that indicates common knowledge or widely accepted facts. Ludwig AI confirms that the phrase is grammatically correct and frequently used across various domains such as science, news, and encyclopedias. While suitable for general communication, writers should be mindful of overuse in highly formal or academic contexts, where more precise wording may be preferred. By understanding the function, purpose, and register of "as is known", writers can effectively incorporate it into their writing to establish a shared understanding with their audience.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
as is widely recognized
Emphasizes broad acceptance or understanding, shifting focus from mere knowledge to general agreement.
as is commonly understood
Highlights shared comprehension rather than just awareness, suggesting a basic level of understanding.
it is well-known that
Directly states the information's popularity, offering a more assertive tone.
it's a known fact that
Frames the statement as an undeniable truth, adding emphasis.
as everyone knows
Assumes universal awareness, suitable for topics presumed familiar to the audience.
it is common knowledge that
Indicates the information is generally accessible and doesn't require specialized knowledge.
it's a given that
Implies the information is a fundamental assumption or premise, needing no further proof.
it's understood that
Stresses acceptance and implicit agreement, suitable for nuanced or subtle concepts.
as has been established
Highlights previous confirmation or validation of the information.
it has long been recognized
Indicates the information has been acknowledged or accepted for an extended period.
FAQs
How can I use "as is known" in a sentence?
You can use "as is known" to introduce information that is generally accepted. For example: "As is known, climate change is impacting global weather patterns."
What are some alternatives to "as is known"?
You can use alternatives like "it is well-known that", "as is widely recognized", or "as is commonly understood" depending on the context.
When is it appropriate to use "as is known" in writing?
It's appropriate to use "as is known" when introducing information that is generally accepted or considered common knowledge within a specific field or context. However, avoid using it when introducing novel or controversial information.
Is "as is known" formal or informal?
The phrase "as is known" is generally considered neutral to slightly formal. While appropriate for many contexts, it can sometimes sound presumptuous in very formal academic writing. Consider alternatives such as "it has been established that" for a more academic tone.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested