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
out of whom
Grammar usage guide and real-world examplesUSAGE SUMMARY
"out of whom" is correct and usable in written English.
It can be used to refer to the source of a person or thing that is being described. For example, "She was born into a family of nine children, out of whom three have gone on to become doctors."
✓ Grammatically correct
Science
News & Media
Encyclopedias
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
Seventy-seven per cent of the county's population turned out, of whom 56.5% opted for Brexit.
News & Media
He said 63% of eligible members turned out of whom 62% voted in favour of a conversion vote.
News & Media
There were 805 patients (19% of the total cohort) who transferred out, of whom 737 (92%) were traced as having transferred in to a new ART facility, with a median time of 1.3 months between transferring-out and transferring-in.
Science
He raised an ambulance corps of 1,100 volunteers, out of whom 300 were free Indians and the rest indentured labourers.
Encyclopedias
One is a half-dozen narratives by figures out of whom the book's characters are reincarnated: not only is the purpose elusive but the passages are also near unreadable.
News & Media
Doubtless historians will also note how pathetically in thrall the administration was to the very people out of whom it has taken such an ill-conceived bite this week.
News & Media
Undeterred, Whitelaw went on to appear in Beckett's Not I at the Royal Court in 1973, where she became a spotlit mouth out of whom words poured with scalding intensity.
News & Media
In Newcastle-under-Lyme, Chris Spence, 38, a party member and shopkeeper who sells Indian furniture, said membership in January last year had stood at around 210-220, oft of whom about 40 were active.
News & Media
The poor have often been eyed covetously by enterprise, as they represent an apparently enduring group in society, out of whom it must surely be possible, in one way or another, to make a profit, the word David Cameron has cleansed of any association with dirt – perhaps prematurely, as G4S and Serco demonstrated, when they charged the government for tagging prisoners who did not exist.
News & Media
Eighty-seven patients (57.6%) had ≥2 CRF for IAH, 59 (67.8%) out of whom developed IAH.
Science
There were 91 university instructors asked to participate in the survey, out of whom nine were interviewed and finally, a focus group of five participants was conducted.
Science
Expert writing Tips
Best practice
Consider using simpler alternatives like "of whom" or "from whom" for better clarity and conciseness.
Common error
Avoid using "out of whom" in informal writing. It can sound stilted or overly formal in casual contexts.
Source & Trust
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "out of whom" functions as a prepositional phrase introducing a relative clause. It modifies a preceding noun phrase, indicating a subset or selection from a larger group of people. Ludwig provides examples of its use in formal contexts.
Frequent in
Science
47%
News & Media
27%
Encyclopedias
8%
Less common in
Wiki
4%
Formal & Business
4%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "out of whom" functions as a prepositional phrase introducing a relative clause, used to specify a subset of individuals from a larger group. Ludwig AI indicates that the phrase is grammatically correct, though less common than alternatives like "of whom" or "from whom". Its register leans towards formal and scientific contexts, appearing in academic papers, news reports, and encyclopedias. When deciding to use "out of whom", consider the desired level of formality and whether a simpler alternative would improve clarity. While grammatically sound, its infrequent usage can make writing appear stilted in casual settings.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
from whom
This is a more concise and common alternative, replacing "out of" with "from".
of whom
This alternative omits "out of", resulting in a more direct and often preferred phrasing.
among whom
This option emphasizes the selection from a larger group.
from which group
This phrase is less formal and more descriptive, specifying the origin as a group.
of that number
This alternative replaces "whom" with a more numerical reference.
from that set
Using "set" instead of "whom" makes it less personal and more about a defined collection.
from those individuals
This alternative is more explicit and formal, using "individuals" to replace "whom".
taken from them
This option rephrases the relationship as an action of taking something from the group.
selected from them
This choice highlights the selection process.
a subset of whom
This alternative specifies that a smaller group is taken from the initial group.
FAQs
What is the meaning of "out of whom"?
The phrase "out of whom" indicates a selection or origin from a group of people. It's similar to saying "from whom" or "of whom".
How can I use "out of whom" in a sentence?
Example: "He assembled a team of experts, "out of whom" several had won Nobel Prizes."
What are some alternatives to "out of whom"?
Is "out of whom" more formal than "of whom"?
Yes, "out of whom" is generally considered more formal than "of whom", but it's less commonly used in contemporary writing.
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
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested