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 quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

in when to use

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "in when to use" is not correct and not usable in written English. It seems to be an incomplete expression and lacks clarity. An example could be: "I am unsure in when to use this term." Alternative expressions could be "when to apply," "when to utilize," or "when to employ."

⚠ May contain grammatical issues

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

3 human-written examples

"I wish they'd take that nigger's picture off," the soldier said, a moment before Browne granted him "a lesson in when to use that word and when you should not use that word - a physical lesson".

News & Media

The Guardian

In his nearly six years running the department, which had a reputation for overly aggressive, and sometimes deadly, policing, Brown has proved to be a reformer, firing rogue cops for poor behavior, and making sure all officers got extra training in when to use lethal force.

News & Media

The New Yorker

Police, she said, need to be trained thoroughly in when to use lethal force.

News & Media

Vice

Human-verified similar examples from authoritative sources

Similar Expressions

57 human-written examples

Physicians in this country have a free hand in deciding when to use new technology like CT angiography.

News & Media

The New York Times

The trick is in knowing when to use the press and when to avoid it.

News & Media

The Guardian

By tying military action to additional revenue, the president would have a freer hand in deciding when to use force.

News & Media

The New York Times

By tying military action to additional revenue, the president would actually have a freer hand in deciding when to use force.

News & Media

The New York Times

In addition, these patients may have a knowledge deficit in how and when to use their medications.

There's a lot more caution in terms of when to use them.

News & Media

Los Angeles Times

In essence these are "when?" (to use them), "what?" (to include) and "how?" (to display them).

In contrast, people choose when to use contraceptives, a low-cost product, turning premiums into advance payment for routine services.

News & Media

HuffPost
Show more...

Expert writing Tips

Best practice

Avoid using the phrase "in when to use" in formal writing. Opt for grammatically correct alternatives such as "when to use" or "when to apply" for clarity and precision.

Common error

A common mistake is to add unnecessary prepositions like "in" before "when" in phrases. This can create grammatically incorrect sentences. Ensure that "when to use" is not preceded by extra prepositions to maintain clarity.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

77%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "in when to use" is grammatically incorrect and does not serve a standard function in English. Ludwig AI identifies the phrase as flawed, suggesting it's an incomplete expression needing correction. It appears as an attempt to combine a preposition with a relative clause, resulting in ungrammatical construction.

Expression frequency: Uncommon

Frequent in

News & Media

33%

Science

33%

Wiki

33%

Less common in

Academia

0%

Formal & Business

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "in when to use" is grammatically incorrect and should be avoided in both formal and informal writing. As Ludwig AI suggests, it's better to use alternatives like "when to use", "when to apply", or "when to utilize" to maintain clarity and correctness. The sources where the phrase appears are varied, but its infrequent and incorrect usage suggests that writers should opt for more standard English phrasing. While this is present in some news media, wiki and science source, it is still not advisable to use the phrase.

FAQs

What's grammatically correct, "in when to use" or "when to use"?

"When to use" is grammatically correct. The inclusion of "in" before "when" is unnecessary and creates an incorrect phrase.

How can I rephrase "in when to use" to be more clear?

You can use alternatives such as "when to apply", "when to utilize", or "the appropriate time to use" depending on the context.

Is "in when to use" ever appropriate in formal writing?

No, "in when to use" is generally not appropriate for formal writing due to its grammatical incorrectness. Always choose a clearer and more grammatically sound alternative.

What's the difference between "in when to use" and "at when to use"?

Both "in when to use" and "at when to use" are grammatically incorrect. The correct way to phrase it is simply "when to use" without the additional preposition.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

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.

Source & Trust

77%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Most frequent sentences: