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
in what extend
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "in what extend" is not correct; the correct form is "to what extent." You can use it when asking about the degree or level of something.
Example: "To what extent do you believe this policy will impact the environment?"
⚠ May contain grammatical issues
Science
Formal & Business
News & Media
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
3 human-written examples
Results of this study help to better understand in what extend the synergistic effect of nanoparticle on enhancing foam stability/mobility is controlled by combination of nanoparticle and surfactant surface charges.
We are not able to determine in what extend neurological examination could have altered the subsequent evaluation of anxiety.
Science
It would be of interest to determine in what extend anxiety is a marker of immediate or future severity in other disease than GBS.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
The effect of LVP on DC was reversed by IFNα in vitro but to what extend IFNα therapy can prevent the effect of LVP on DC in vivo remains to be determined.
Science
Nevertheless, when trying to understand the hemodynamic effects of PEEP in an individual patient, the most important question to keep in mind is: to what extend will PEEP change total lung volume and ITP and how will these changes ultimately affect LV preload, contractility and afterload?
Science
It is quantified in this study to what extend total ozone is controlling long-term changes of solar irradiance below 315 nm at ground level.
Science
In longitudinal studies, the effect of the employment of lower cut-off scores could be examined as well, in order to establish to what extend these children are at risk for developing anxiety disorders in the future.
Analysis of expression patterns of putative homologs of these Arabidopsis genes in S. latifolia will reveal to what extend their functions are conserved in Silene and may help to elucidate their roles in Silene flower development.
Science
Since Treg are currently tested for therapeutic applications in humans, it is especially important to determine to what extend results obtained in mice can be translated to human Treg.
Science
The measure quantifies to what extend changes in values of some parameters can be compensated by changes in values of other parameters.
Science
Methodology: A review and analysis of available documents in order to analyze to what extend objectives and results planned are reached.
Formal & Business
Expert writing Tips
Best practice
Use the correct phrase "to what extent" when you want to inquire about the degree or level to which something is true or affects something else. For example: "To what extent will these changes affect our productivity?"
Common error
Avoid using the phrase "in what extend". The correct idiomatic form is "to what extent". Using "in what extend" will make your writing appear unpolished and grammatically incorrect.
Source & Trust
82%
Authority and reliability
1.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "in what extend" is intended to function as an interrogative phrase, seeking to determine the degree or scope of something. However, it is grammatically incorrect and should be replaced with the correct idiom "to what extent". Ludwig AI confirms this error.
Frequent in
Science
67%
News & Media
17%
Formal & Business
16%
Less common in
Wiki
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "in what extend" is grammatically incorrect; the correct form is "to what extent". This phrase is used to ask about the degree or level to which something is true or affects something else. As Ludwig AI points out, using the incorrect phrase can detract from the clarity and professionalism of your writing. While the intended meaning might be understood from context, it's always best to use the accurate phrasing. Remember to use "to what extent", "how much", or "to what degree" instead.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
to what extent
Changes the preposition and uses the correct idiomatic form.
to what degree
Replaces "extent" with "degree", offering a synonymous expression.
in what measure
Substitutes "extent" with "measure", providing a slightly more formal alternative.
how much
Offers a simpler, more direct way to ask about the quantity or degree.
to what level
Replaces "extent" with "level", focusing on the magnitude or intensity.
in what way
Shifts the focus to the manner or method rather than the degree.
how far
Implies a limit or range, changing the focus from simple magnitude.
to what point
Indicates a specific limit or threshold.
in what proportion
Introduces the idea of relative quantity.
to what amount
Focuses on the quantity or sum involved.
FAQs
What is the correct way to ask about the degree of something?
The correct phrase to use is "to what extent". The phrase "in what extend" is grammatically incorrect.
What does "to what extent" mean?
"To what extent" is used to ask about the degree or level to which something is true or affects something else. It's similar to asking "how much" or "in what degree".
What can I say instead of "in what extend"?
Since "in what extend" is incorrect, use "to what extent", "how much", or "to what degree" instead.
Is "in what extend" ever correct?
No, "in what extend" is not a correct or accepted phrase in standard English. The correct form is "to what extent".
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
82%
Authority and reliability
1.8/5
Expert rating
Real-world application tested