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 first hand from
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "know first hand from" is correct and usable in written English.
It can be used when you want to express that you have direct personal experience or knowledge about something from a specific source. Example: "I know first hand from my time working in the field that this approach is effective."
✓ Grammatically correct
News & Media
Alternative expressions(1)
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
1 human-written examples
"We know first hand from London 2012 what a carnival of junk food marketing the Olympics are," said Malcolm Clark, coordinator of the campaign.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
To be sure, there is novelistic pretext for some enlightenment of attitude; the reverend has a counter-worldly set of priorities (though he seems casually heretical about most matters); Mason knows first hand from Gloucestershire the systematic oppression of the weak by the strong, and Dixon is a lapsed Quaker, if Quakers can lapse.
News & Media
"We know first-hand from our time on Nauru that prolonged and indefinite detention, and the uncertainty associated with a lack of permanent resettlement options for refugees on Nauru, causes serious harm.
News & Media
I know first-hand from speaking and working with our children that our poor and minority students have potential and ability that rivals anyone.
News & Media
I know first-hand from my decades-long experience in the field that institutions from the Clinton Global Initiative to Western Union are integral to providing solutions to the challenges faced by humanity.
News & Media
I sold digital cameras at Circuit City from 2000 to 2004 and know first hand the buying mentality of most people.
News & Media
I know first hand.
News & Media
You know first hand yourselves.
News & Media
I know first hand the mental effects of shell shock.
News & Media
I know first hand what trauma gun violence can bring.
News & Media
A young woman from Latvia, Lucy Slice, knew first hand of that spirit.
News & Media
Expert writing Tips
Best practice
When using "know first hand from", ensure that you clearly specify the source of your direct knowledge or experience to enhance credibility.
Common error
Avoid stating "I know first hand from experience" without specifying what experience you are referring to. Be specific for clarity and impact.
Source & Trust
84%
Authority and reliability
4.4/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "know first hand from" functions as a way to emphasize direct personal experience or knowledge obtained from a specific source. This indicates that the speaker's understanding is not based on hearsay or indirect information, aligning with examples in Ludwig.
Frequent in
News & Media
60%
Formal & Business
20%
Wiki
10%
Less common in
Science
5%
Encyclopedias
3%
Academia
2%
Ludwig's WRAP-UP
In summary, "know first hand from" is a phrase used to assert direct personal knowledge derived from a specific source. Ludwig confirms the phrase is grammatically correct and usable. It's most commonly found in news and media, where establishing credibility is key. To enhance your writing, always specify the source of your knowledge and avoid vague attributions. Alternatives like "have direct knowledge based on" can offer nuanced variations in meaning. The phrase functions to enhance your credibility and authority by highlighting that your statement is grounded in your own direct involvement or observation.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
have direct knowledge based on
Focuses on the directness of knowledge acquired, emphasizing the foundation upon which it rests.
have personal experience stemming from
Highlights the personal nature of the experience and its origin.
witnessed personally due to
Emphasizes direct observation as the cause of knowledge.
experienced directly as a result of
Links direct experience to a specific cause or event.
gained insight through firsthand involvement in
Highlights the gaining of insight through active participation.
learned directly because of
Focuses on the direct learning experience and its reason.
understand from direct exposure to
Highlights understanding gained through direct exposure.
attest from direct observation of
Focuses on the ability to attest to something based on direct observation.
can confirm based on personal interaction with
Emphasizes the ability to confirm something through personal interaction.
have verified through my own experiences within
Highlights the verification of something through personal experiences.
FAQs
How can I use "know first hand from" in a sentence?
You can use "know first hand from" to indicate direct personal experience. For example, "I "know first hand from" working in the hospital how challenging it is for nurses".
What are some alternatives to "know first hand from"?
Alternatives include "have direct knowledge based on", "have personal experience stemming from", or "witnessed personally due to". These phrases offer similar meanings with slightly different emphasis.
Is it redundant to say "know first hand from experience"?
While not strictly redundant, specifying the source after "know first hand from" adds clarity. Saying "I "know first hand from" my time in the field" is stronger than just saying "I "know first hand from" experience".
What's the difference between "know first hand from" and "hear first hand from"?
"Know first hand from" implies direct personal experience or knowledge, while "hear first hand from" means you received information directly from someone else. The former is based on your own experience, the latter on someone else's account.
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
84%
Authority and reliability
4.4/5
Expert rating
Real-world application tested