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
we certify that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "we certify that" is correct and usable in written English.
It is typically used in formal contexts to affirm or confirm the truth of a statement or document. Example: "We certify that all information provided in this report is accurate and complete."
✓ Grammatically correct
Science
Alternative expressions(20)
we declare that
we ascertain that
we hereby certify that
we testified that
we hereby confirming that
We confirm that
we are that
we emphasize that
we validate that
we assert that
we confirms that
we herewith certify that
we herein confirm that
we assure you that
we attest that
we reaffirm that
we hereby showed that
we officially affirm that
we hereby announce that
we reassure that
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
39 human-written examples
We certify that all applicable institutional and governmental regulations concerning the ethical use of human volunteers/animals were followed during the course of this research.
Science & Research
We certify that we have no potential competing interests.
Science
We certify that the submission is original work and is not under review for any other publication.
We certify that all research using cell lines in the grant application above is contained in the protocol listed.
Science
We certify that all research using vertebrate animals in the grant application above is contained in the protocol listed.
Science
We certify that all of the experiments were carried out in accordance with the legal and ethical standards in France.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
21 human-written examples
Despite the time lag, we cannot certify that IPV preceded drug use.
Science
However, this remained a genuine challenge, and we could not certify that preload dependency was not fully ruled out.
First, we certified that GFP-NP or mCherry-NP transfection supported the polymerase function in the conditions assayed, using a mini-genome reporter plasmid that produces a negative-sense luciferase gene under the control of viral promoter sequences in cells expressing 3P-NP/GFP-NP or mCherry-NP, in relation to the 2P-NP/GFP-NP or mCherry-NP negative controls (Fig. 1a).
Science & Research
By repeated measurements of the same region (1 × 1 μm2 in area), we certified that the surface morphology did not change after five consecutive scans.
Science
We certified that the mRNA translation-related gene cytoplasmic polyadenylation element-binding protein 1 (CPEB1) is hypomethylated and overexpressed in glioma cells and tissues.
Science
Expert writing Tips
Best practice
Ensure that the statement following "we certify that" is accurate, verifiable, and supported by evidence. It is a declaration of truth, so reliability is key.
Common error
Avoid using "we certify that" excessively in informal contexts. Overuse can make your writing sound stiff or overly formal. In less formal settings, simpler phrases like "we confirm" or "we assure you" may be more appropriate.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "we certify that" functions as a declarative statement, used to formally attest to the truth or accuracy of something. Ludwig AI confirms its proper usage in various contexts, as shown in numerous examples.
Frequent in
Science
100%
Less common in
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "we certify that" is a formal declaration used to assure the accuracy or validity of information. Ludwig AI confirms that it is grammatically sound and widely employed in formal and scientific contexts. Alternatives such as "we attest that" or "we confirm that" can be used depending on the desired level of formality. While correct, overuse in informal settings should be avoided. The phrase primarily functions to provide assurance and enhance credibility, making it a valuable tool in formal communication. As evidenced by the example sentences, this expression is prevalent in various scientific publications.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
we attest that
Replaces "certify" with "attest", offering a slightly more formal tone.
we verify that
Substitutes "certify" with "verify", emphasizing the confirmation of accuracy.
we confirm that
Replaces "certify" with "confirm", indicating a simple affirmation.
we guarantee that
Uses "guarantee" instead of "certify", suggesting a stronger level of assurance.
we assure you that
Employs "assure you" to convey a sense of confidence and reliability.
we declare that
Uses "declare" to formally announce or state something.
we validate that
Substitutes "certify" with "validate", highlighting the confirmation of validity.
it is our certification that
Restructures the phrase to emphasize the act of certification itself.
we warrant that
Replaces "certify" with "warrant", implying a legal or formal guarantee.
we vouch for the fact that
Uses "vouch for" to express strong support and belief in the truth of a statement.
FAQs
What is the purpose of using "we certify that" in a document?
Using "we certify that" in a document serves to formally declare and guarantee the truthfulness or accuracy of the information presented. It adds credibility and provides assurance to the reader.
What are some alternatives to "we certify that"?
You can use alternatives like "we attest that", "we verify that", or "we confirm that" depending on the context and the level of formality required.
Is "we certify that" suitable for informal communication?
While grammatically correct, "we certify that" is generally more appropriate for formal contexts. In informal settings, simpler phrases may be more suitable.
What should follow after "we certify that" in a sentence?
After "we certify that", you should include a clear and concise statement of fact or assurance. This statement should be accurate and supported by evidence.
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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested