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
which says that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which says that" is correct and usable in written English.
It can be used to introduce a statement or explanation that clarifies or elaborates on a previous point. Example: "The report includes a section which says that the project will be completed by the end of the year."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(20)
which indicates that
which states that
which explains that
that means that
which asserts that
that demonstrates that
that implies that
that suggests that
as evidenced by the fact that
which displays that
which argues that
which describes that
which signifies that
which assumes that
which recognises that
which suggests that
which demonstrates that
which mentions that
which alleges that
which expresses 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
60 human-written examples
The COF was determined using the Coulomb law, which says that friction force (friction) is proportional to the applied load, i.e., the normal force (Fn).
Science
How can a countable model satisfy the first-order sentence which "says that" there are uncountably many things?
Science
which says that the installed version if 4.2.0, but that the latest release is version 4.2.2.
Academia
You will obtain a2 + b2 = c2, which says that the areas of the squares add up.
News & Media
However, one self-confessed recalcitrant is BA, which says that Enac has broken European competition regulations.
News & Media
Then, there's the other philosophy, which says that it's not their fault.
News & Media
This has infuriated Turkey, which says that Turkish-Cypriots must have a share of the spoils.
News & Media
This is a fundamental theorem from probability theory, which says that if you have independent identically distributed random variables.
Academia
So, it's one which says that the new variable is equal to some combination of the old variables.
Although this topic has been studied for many years, there is a recent debate, which says that the use of large-density asymptotics in the previous studies is invalid.
Science
Moore's law, which says that computing power doubles every 18 months, is still doing its stuff.
News & Media
Expert writing Tips
Best practice
When using "which says that", ensure the clause following "that" provides a direct explanation or clarification of the subject being discussed.
Common error
While grammatically sound, avoid overusing "which says that" in casual writing. Opt for simpler alternatives like "this means that" or rephrase the sentence for a more natural flow.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which says that" functions as a relative clause, specifically a nonrestrictive (or non-defining) clause. It adds extra information about the noun it modifies. Ludwig examples shows it introduces a statement, explanation, or rule, providing additional context.
Frequent in
News & Media
38%
Science
35%
Academia
14%
Less common in
Wiki
5%
Formal & Business
3%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "which says that" is a versatile relative clause commonly used to introduce statements, explanations, or rules. Ludwig AI confirms its grammatical correctness and high frequency across various contexts, including News & Media, Science, and Academia. While appropriate for formal writing, avoid overuse in casual contexts for better flow. Consider alternatives like "which indicates that" or "which states that" for nuanced expression.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
which indicates that
Replaces "says" with "indicates", suggesting a more subtle communication or sign.
which states that
Replaces "says" with "states", implying a formal or official declaration.
which explains that
Replaces "says" with "explains", focusing on the clarifying aspect of the statement.
which asserts that
Replaces "says" with "asserts", conveying a strong and confident declaration.
that demonstrates that
Replaces "says" with "demonstrates", highlighting evidence or proof.
that reveals that
Emphasizes the unveiling of new or previously unknown information.
that confirms that
Highlights the validation or verification aspect of the information.
that implies that
Changes the structure to focus on the implication rather than the direct statement.
that suggests that
Shifts the emphasis to suggestion, indicating a less direct or conclusive statement.
as evidenced by the fact that
Introduces a statement providing evidence for a claim, adding a formal tone.
FAQs
How can I use "which says that" in a sentence?
Use "which says that" to introduce a clause that explains or specifies something. For instance: "The contract includes a clause "which says that" all disputes will be resolved through arbitration".
What can I say instead of "which says that"?
You can use alternatives like "which indicates that", "which states that", or "which explains that" depending on the context.
Is it correct to say "that says that" instead of "which says that"?
While "that says that" might be understood, ""which says that"" is generally preferred in formal writing as it correctly introduces a nonrestrictive clause.
What's the difference between "which says that" and "that means that"?
"Which says that" introduces a specific statement or rule, while "that means that" implies a consequence or interpretation. For example: "The law includes a provision which says that all citizens must vote; that means that voter turnout should increase".
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested