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
know how about when
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "know how about when" is not correct and does not convey a clear meaning in written English.
It seems to be an attempt to ask for information or guidance regarding a specific time or situation, but it lacks clarity and proper structure. Example: "I need to know how about when we should start the project."
⚠ May contain grammatical issues
Alternative expressions(4)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
Some of these may be straightforward, but some plants require a little more know-how about when the best time to harvest them is.
Wiki
However, we can't prepare the best food we know how when information about the ingredients we purchase is hidden from us with labels that are missing basic facts.
News & Media
Outdated labels still carry force: "Do I sell out or help others, and how long do I have to wait before I can do good?" Many want to strike out on their own and do something they care about, but few know how or when to start.
News & Media
I was reading something yesterday by William Trevor, a kind of little essay about Yeats — at least, it starts off being about Yeats — and you know how Yeats, when he was a young man, a young poet in Dublin, used to go around in this outrageous outfit: a long black cape, a black sombrero, trailing black trousers, and, you know, just looking purely poetic.
News & Media
"We are always talking about rights this and rights that, but I would like to know how knowledge about my rights will help me when I am in a rape situation when as a girl I do not have power?" asked a 17 year old, Refilwe Malatji.
Formal & Business
"We are always talking about rights this and rights that, but I would like to know how knowledge about my rights will help me when I am in a rape situation when as a girl I do not have power," asked 17-year-old Refilwe Malatji at the workshop at the high school in Ga Thoka.
Formal & Business
We now know how James Bond felt when he complained about the difficulty of getting enough toast to go with his caviar.
News & Media
They need to know how to react when they're about to cum early—how to hold it, or how to get the cumshot, so they can go back and film the rest later.
News & Media
The Act To Change website features videos, blogs, fact sheets, and other resources in Chinese, Hindi, Korean, Punjabi, Urdu, and Vietnamese -- making it easier for people from the AAPI community, and their allies, to know how to help when someone they care about is being bullied.
News & Media
Many people don't know how to react when someone they care about goes through a great loss like this.
Wiki
Know how to land when you fall.
Wiki
Expert writing Tips
Best practice
When seeking information about a process and its timing, use the clearer and grammatically correct phrase "know how and when".
Common error
Do not combine "know how", "about", and "when" in a single phrase. This creates an awkward and grammatically incorrect construction that obscures your intended meaning.
Source & Trust
60%
Authority and reliability
1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "know how about when" attempts to combine understanding a method with understanding timing, but fails grammatically. Ludwig AI indicates it's not a correct phrase in written English. The correct way would be using the conjunction as in the alternative phrase know how and when.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "know how about when" is grammatically incorrect and lacks clarity. According to Ludwig AI, it is not a proper English phrase. The intended meaning—inquiring about both method and timing—is obscured by the improper construction. It is recommended to use the corrected and clear alternative, "know how and when". This revised phrasing ensures effective communication across various contexts and registers.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
know how and when
Reorders the elements for better flow, focusing on both method and timing.
understand how and when
Replaces "know" with "understand" to emphasize comprehension.
learn how and when
Focuses on acquiring knowledge of both method and timing.
find out how and when
Emphasizes discovering information about method and timing.
determine the method and timing
Uses a more formal tone, highlighting the act of deciding on both aspects.
know the procedure and schedule
Replaces "how" with "procedure" and "when" with "schedule" for greater specificity.
be aware of the means and time
Stresses awareness of the resources and temporal aspects involved.
ascertain the technique and date
Emphasizes the need to find a strategy and specific date.
discover the way and moment
Focuses on uncovering a particular approach and precise time.
recognize the manner and period
Highlights acknowledgement of a style and specific timeframe.
FAQs
How can I correctly ask about both the method and the timing of something?
Use the phrase "know how and when" to clearly inquire about both the process and the schedule.
What's a more formal way to ask about the method and timing?
Consider using "determine the method and timing" for a more formal approach, which emphasizes a decision-making process rather than simple knowledge.
Is it ever correct to use "know how about when"?
No, the phrase "know how about when" is not grammatically correct in standard English. It's best to rephrase your sentence for clarity and correctness.
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
60%
Authority and reliability
1/5
Expert rating
Real-world application tested