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
would know from
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "would know from" is correct and usable in written English.
It can be used to indicate that someone has knowledge or information derived from a specific source or experience. Example: "She would know from her years of experience in the field that this approach is effective."
✓ Grammatically correct
News & Media
Alternative expressions(5)
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
21 human-written examples
He would know from their style.
News & Media
They would know from the get-go that excellence, improvement, character and persistence were valued.
News & Media
He would know from the inside where these girls came from.
News & Media
"Davos is the Land of a Thousand Agendas," an ex-U.S. senator, who would know from such lands, told me.
News & Media
("Who would know from my poems that that would be a museum I would never go to?" she said).
News & Media
If you are in London on business, which an app would know from the events on your calendar, you probably want a PDF related to work.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
36 human-written examples
Bank statements would come through, and I'd hear 'Mark...'... and I'd know from the tone.
News & Media
Not that you'd know from the press said eyebrows have received throughout her years in public office.
News & Media
Not that you'd know from the crowd.
News & Media
All these people I'd know from the neighborhood, boys from the corner, these people I'd ridden the bus with, just out there, screaming for blood".
Wiki
But I'd known from 17 that I was going to be an artist and... oof, my poor father.
News & Media
Expert writing Tips
Best practice
Ensure the source you're referencing is reliable and relevant to the context to avoid misinterpretations.
Common error
Avoid assuming that everyone "would know from" a particular source. Be specific about who has access to that information or experience.
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "would know from" functions as a verb phrase used to indicate that someone possesses certain knowledge or understanding derived from a particular source or experience. As Ludwig AI suggests, this phrase is commonly used and grammatically correct.
Frequent in
News & Media
80%
Wiki
10%
Formal & Business
10%
Less common in
Science
0%
Encyclopedias
0%
Academia
0%
Ludwig's WRAP-UP
In summary, "would know from" is a common and grammatically correct phrase used to indicate that someone's knowledge is based on a specific source or experience. As Ludwig AI confirms, this usage is valid and understood in English. It's most frequently found in news and media contexts, but is also acceptable in formal and informal settings. When using the phrase, ensure that the source is clearly identified and relevant to the context. Consider alternatives like "could deduce from" or "can gather from" for slight variations in meaning.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
can gather from
Emphasizes the collection of information from various sources.
could deduce from
Suggests a logical inference based on available information rather than direct knowledge.
could infer from
Similar to 'deduce', but may involve less certainty.
might learn by
Focuses on the process of learning or acquiring new skills/information.
might ascertain from
Implies a more formal or investigative process of finding something out.
can understand through
Highlights the role of comprehension in gaining knowledge.
could realize through
Implies a sudden awareness or understanding as a result of something.
might conclude based on
Focuses on forming a judgment or opinion after considering certain facts.
can determine via
Suggests a method or means by which something is decided or discovered.
might glean from
Suggests gathering information in small amounts, often indirectly.
FAQs
How can I use "would know from" in a sentence?
You can use "would know from" to indicate the source of someone's knowledge or understanding. For example, "A doctor "would know from" experience how to diagnose the illness".
What are some alternatives to "would know from"?
Alternatives include "could deduce from", "can gather from", or "might ascertain from". The best choice depends on the specific context.
Is it better to say "would know from" or "knows from"?
The choice between "would know from" and "knows from" depends on the context. "Would know from" implies a hypothetical or conditional situation, while "knows from" indicates current knowledge derived from a source. For example: "He "knows from" experience that the task is difficult". "He "would know from" the documents if he had read them".
What's the difference between "would know from" and "learned from"?
"Would know from" suggests knowledge gained as a consequence of something, whereas "learned from" directly indicates a learning experience or source. For example, "She "learned from" her mistakes". "She "would know from" the instructions if she paid attention".
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
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested