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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
let him know that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "let him know that" is correct and usable in written English.
You can use it when you want to inform someone to communicate specific information to another person. Example: "Please let him know that the meeting has been rescheduled to next week."
✓ Grammatically correct
News & Media
Wiki
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
Mr. Raymer let him know that was no stranger to Sheetrock.
News & Media
But she couldn't let him know that.
News & Media
Let him know that.
Wiki
Even if you feel like he's doing everything right, let him know that.
Wiki
Let him know that although you love him, you're lonely.
News & Media
"I wanted to let him know that I know he didn't do it.
News & Media
And they would never miss the chance to let him know that".
News & Media
I've let him know that I will have a variety for him to store/process.
News & Media
I just wanted to let him know that it's up to him".
News & Media
I wish I could call him now and let him know that we are getting married".
News & Media
How can I let him know that he's making people uncomfortable?
News & Media
Expert writing Tips
Best practice
When using "let him know that", ensure the information you are communicating is clear and concise. Avoid ambiguity to prevent misinterpretations.
Common error
While "let him know that" is acceptable in many situations, it can sound less professional in formal settings. Opt for alternatives like "inform him that" or "notify him that" to maintain a more polished tone.
Source & Trust
73%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "let him know that" functions as a declarative construction to introduce information that needs to be conveyed to a third party. It's a common way to report or request the communication of specific details. As confirmed by Ludwig, the structure is grammatically correct and versatile.
Frequent in
Wiki
51%
News & Media
47%
Formal & Business
1%
Less common in
Science
0%
Encyclopedias
0%
Academia
0%
Ludwig's WRAP-UP
The phrase "let him know that" is a common and grammatically correct way to communicate information, as validated by Ludwig. It functions as a declarative construction used to introduce information that needs to be conveyed to a third party. While its register is generally neutral, more formal contexts might benefit from alternatives like "inform him that" or "notify him that". The phrase is most frequently found in Wiki and News & Media sources, according to the analysis of examples. Remember to use clear and concise language when using "let him know that" to avoid any ambiguity.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
inform him that
Replaces "let know" with the more formal "inform".
notify him that
Substitutes "let know" with "notify", implying a more official or formal communication.
tell him that
Uses the simpler and more direct verb "tell" instead of "let know".
make sure he knows that
Emphasizes the certainty of the communication.
communicate to him that
Employs a more formal and elaborate way of saying "let him know".
convey to him that
Uses "convey" to suggest a more thoughtful or nuanced communication.
advise him that
Indicates the communication involves advice or counsel.
apprise him of the fact that
A more formal and somewhat archaic way of saying "let him know".
give him to understand that
Implies a more subtle or indirect form of communication.
pass along the information that
Suggests a relay of information from another source.
FAQs
What can I say instead of "let him know that"?
You can use alternatives like "inform him that", "notify him that", or "tell him that" depending on the context.
Is "let him know that" formal or informal?
"Let him know that" is generally considered informal to neutral. For more formal situations, consider using "inform him that" or "advise him that".
How to use "let him know that" in a sentence?
You can use "let him know that" to convey information to someone indirectly. For example, "Please let him know that the meeting is postponed".
What's the difference between "let him know that" and "tell him that"?
While both phrases convey a similar meaning, "tell him that" is more direct. "Let him know that" might imply a slightly more indirect communication or a request for someone else to communicate the information.
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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
73%
Authority and reliability
4.5/5
Expert rating
Real-world application tested