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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
when to use
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "when to use" is a correct and usable part of a sentence in written English.
You can use it when you are looking for information on the appropriate time to use a particular strategy, product, service, etc. Example: "I'm not sure when to use this software, could you explain it to me?".
✓ Grammatically correct
News & Media
Wiki
Academia
Science
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
Hopefully this will help us remember when to use it.
News & Media
Know when to use power.
News & Media
Do you know when to use "affect" and when to use "effect"?
News & Media
The kitchen also knows when to use a lighter hand.
News & Media
You also know when to use a polygraph".
News & Media
He's just a good man-manager; he knows when to use the carrot and when to use the stick.
News & Media
Resume vs. CV – The difference and when to use which.
Academia
The only question is when to use it.
News & Media
Know how and when to use a life jacket.
News & Media
Now it's all about when to use them.
News & Media
Meanwhile, Ser o estar, ésa es la cuestión is a lesson to help students understand when to use "ser" and when to use "estar".
News & Media
Expert writing Tips
Best practice
When teaching a new skill, explicitly state situations or contexts describing "when to use" the skill to help learners understand its practical applications and limitations.
Common error
Avoid vague statements that don't specify "when to use" something. For example, instead of saying 'Use this tool for everything', provide specific scenarios where it's most effective.
Source & Trust
78%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "when to use" functions as a relative clause, often introducing questions or statements about the appropriate timing or circumstances for utilizing something. As Ludwig AI confirms, it's a standard and grammatically correct construction.
Frequent in
Wiki
41%
News & Media
34%
Academia
5%
Less common in
Science
5%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "when to use" serves as a versatile relative clause that addresses the suitable timing or conditions for employing a particular action or tool. Ludwig AI validates its grammatical correctness and common usage. The phrase is prevalent in various contexts, including Wiki, News & Media and Academia, making it suitable for both informal and neutral communication. By understanding its function and purpose, writers can effectively communicate the appropriate timing and context for a wide range of applications.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
appropriate time for
Focuses on the timing aspect rather than the action of using.
best time to utilize
Replaces "use" with "utilize" and emphasizes optimal timing.
circumstances for using
Directly addresses the conditions under which something should be used.
ideal moment for application
Uses more formal vocabulary and highlights the application of something.
right occasion to employ
Emphasizes the suitability of an occasion for employing something.
proper context for utilization
Emphasizes the importance of the correct setting or background for use.
under what circumstances to apply
Focuses on the conditions that make usage appropriate.
when is it advisable to
Presents the concept as a question of advisability.
in which situation should you
Highlights specific situations for appropriate use.
how to properly apply
Focuses on the correct method of application in addition to timing.
FAQs
How do I use "when to use" in a sentence?
You can use "when to use" to introduce a question about the appropriate time or context for utilizing something. For example, "I'm unsure "when to use" this feature; can you explain it?"
What's an alternative to "when to use"?
Alternatives include "appropriate time for", "best time to utilize", or "under what circumstances to apply", depending on the specific nuance you want to convey.
Is it correct to say "when to using" instead of "when to use"?
No, "when to using" is grammatically incorrect. The correct form is ""when to use"", where "use" is the base form of the verb.
What is the difference between "when to use" and "how to use"?
"When to use" refers to the appropriate timing or context for utilizing something, while "how to use" refers to the method or technique for utilizing something. They address different aspects of usage.
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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
78%
Authority and reliability
4.5/5
Expert rating
Real-world application tested