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
it is key to
Grammar usage guide and real-world examplesUSAGE SUMMARY
"it is key to" is correct and usable in written English.
You can use it when you want to emphasize that something is essential or important. For example, "It is key to success that you stay focused and work hard."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(20)
it is quite important to
this requires
it is very essential to
it is instrumental to
it is core to
it is highly advisable to
it is primordial to
it is important to
it is very critical to
it is very significant and important
it is indispensible to
this required
there ought to
there should be
it is indispensable to
it is central to
it is appropriate to
it was necessary to
it is very important to
it is fundamental to
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
It is key to England's bowling strategy.
News & Media
It is key to learning on the job.
It is key to the company's hitherto recession-resistant finances.
News & Media
It is key to any recovery from Britain's economic disaster.
News & Media
Choosing to explore the unknown rather than avoid it is key to a rich, meaningful life.
It is key to accurate resolution of the interface at manageable computational costs.
"It is key to everything we do and runs throughout every task we perform.
News & Media
"It's just a portion of their religion, but it is key to their rituals.
News & Media
Biologists call such flexibility "phenotypic plasticity," and it is key to the survival of most species.
News & Media
"Preserving it is key to the Jamaican iguana's survival and to maintaining the area's biodiversity".
News & Media
It is key to understanding diseases and disorders, including Alzheimer's and autism.
News & Media
Expert writing Tips
Best practice
When using "it is key to", ensure that the statement following clearly articulates the goal or outcome that the subject is crucial for achieving. This provides context and reinforces the significance of the element being highlighted.
Common error
Avoid using "it is key to" excessively in casual or informal writing. While grammatically correct, it can sound overly formal or stilted in relaxed contexts. Opt for simpler alternatives like "it helps to" or "it's important to" for a more natural tone.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it is key to" functions as an emphasizer, highlighting the critical importance or necessity of something for achieving a specific goal or outcome. As Ludwig AI confirms, it underscores that a particular element is essential for success or effectiveness.
Frequent in
News & Media
40%
Science
30%
Academia
15%
Less common in
Formal & Business
5%
Wiki
5%
Reference
5%
Ludwig's WRAP-UP
In summary, the phrase "it is key to" is a versatile and widely used expression that emphasizes the critical importance of something. Ludwig AI confirms its correctness and usability in various contexts, particularly when highlighting essential elements for achieving specific outcomes. While grammatically sound, it is advisable to consider the context and audience to maintain the appropriate tone, especially avoiding overuse in overly informal settings. The phrase frequently appears in news, scientific, and academic sources, underscoring its significance across diverse domains.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
it is crucial to
This alternative directly substitutes "key" with "crucial", maintaining the meaning of being essential.
it is essential to
Replacing "key" with "essential" provides a synonym that also signifies fundamental importance.
it is vital to
Using "vital" instead of "key" emphasizes the necessity of something for success or survival.
it is critical to
Changing "key" to "critical" indicates that something is essential to avoid failure or disaster.
it is paramount to
Substituting "key" with "paramount" elevates the level of importance, suggesting it is of utmost concern.
it is fundamental to
Replacing "key" with "fundamental" stresses the foundational nature of something.
it is central to
Changing "key" to "central" suggests that something is at the core or heart of a matter.
it is important to
Using "important" offers a slightly less emphatic but still significant alternative.
it is significant to
Substituting "key" with "significant" highlights the importance of something in producing an effect.
it is requisite to
Replacing "key" with "requisite" indicates that something is required or necessary for a specific outcome.
FAQs
How can I use "it is key to" in a sentence?
Use "it is key to" to emphasize the importance of something for achieving a specific outcome. For example, "It is key to develop and repeat consistent and caring messages".
What phrases are similar to "it is key to"?
You can use alternatives such as "it is crucial to", "it is essential to", or "it is vital to" depending on the context.
Is "it is key to" formal or informal?
"It is key to" leans towards formal usage but is acceptable in many contexts. Consider your audience and the overall tone of your writing when choosing this phrase.
What is the difference between "it is key to" and "it is important to"?
"It is key to" suggests a higher degree of necessity and impact than "it is important to". Use "it is key to" when something is absolutely essential, while "it is important to" is suitable for general significance.
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
4.5/5
Expert rating
Real-world application tested