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
please know
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "please know" is correct and usable in written English.
It is most often used to politely introduce and convey important information to a reader. For example, "Please know that I am grateful for your help and support throughout this project."
✓ Grammatically correct
News & Media
Academia
Wiki
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
Please know that.
News & Media
"Please know this," he added.
News & Media
Please know that I did try.
News & Media
Please know that you revived it.
News & Media
Please know that I appreciate being invited.
News & Media
"Please know there is no cure".
News & Media
Please know I am so, so sorry".
News & Media
Please know that you are heard.
News & Media
Please know that everything in 'The Normal Heart' happened.
News & Media
Please know all inquiries are confidential.
Academia
"Wherever you are, please know that you were loved".
News & Media
Expert writing Tips
Best practice
Use "please know" to introduce crucial information or provide reassurance in a polite and considerate manner. It softens the delivery, making the message more palatable for the reader.
Common error
Avoid using "please know" in highly informal settings, such as casual conversations with close friends. It can sound overly formal or even insincere in such situations. Opt for simpler expressions like "just so you know" or "FYI".
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "please know" functions as a polite introductory phrase. It is used to preface information that the speaker or writer deems important for the recipient to understand. It sets a considerate tone, as Ludwig AI confirms its correct and usable status.
Frequent in
News & Media
48%
Academia
15%
Wiki
11%
Less common in
Science
13%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "please know" is a versatile and frequently used introductory phrase that serves to politely convey important information or offer reassurance. According to Ludwig AI, the phrase is correct and usable in written English. It is commonly found in News & Media, Academia, Wiki and Science sources, indicating a neutral to professional register. While suitable for many contexts, it's best to avoid overusing it in highly informal settings where simpler expressions may be more appropriate. When used thoughtfully, "please know" can effectively soften the delivery of a message and enhance communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
be aware that
This alternative is a more formal way to introduce important information.
take note that
This alternative is slightly more commanding, directing attention to a specific point.
understand that
This alternative emphasizes the importance of comprehension.
rest assured that
This alternative conveys a sense of reassurance and confidence.
bear in mind that
This alternative gently reminds someone to consider something.
it is important to know
This alternative highlights the significance of the information being shared.
you should be aware
This alternative suggests a need for alertness or caution.
keep in mind that
This alternative is similar to "bear in mind that" but slightly more common.
I want you to know
This alternative is more personal, emphasizing the speaker's desire to inform.
let it be known
This alternative has a formal tone, as used to make formal announcements.
FAQs
What is the best way to use "please know" in a sentence?
Use "please know" to introduce information you want to politely convey, especially when offering reassurance or providing essential details. For instance, "Please know that we are doing everything we can to resolve the issue."
What phrases are similar to "please know"?
You can use alternatives such as "be aware that", "understand that", or "rest assured that" depending on the context and the level of formality required.
When is it appropriate to use "please know"?
It's suitable in professional communications, formal letters, and any situation where you want to sound polite and considerate while sharing important information. It's also appropriate when giving bad news to soften the impact.
Is "please know" too formal for casual conversation?
While grammatically correct, using "please know" in casual conversation might sound overly formal. Consider using more relaxed alternatives like "just so you know" or "FYI" in informal settings.
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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested