it is a known fact

USAGE SUMMARY

The phrase "it is a known fact" is correct and commonly used in written English.
It is typically used to introduce a statement or fact that is widely accepted or acknowledged as true. For example: - It is a known fact that smoking can lead to serious health problems. - It is a known fact that humans need water to survive. - It is a known fact that the Earth rotates on its axis. - It is a known fact that dogs are loyal companions to humans. - It is a known fact that exercise is important for maintaining good physical and mental health.

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

"It is a known fact that criminals don't pay their fare," Sergeant Silverstein said.

The New York Times

"It is a known fact that Hong Kong art has not faired well commercially, especially in comparison to art from mainland China, although this is changing," she said.

The New York Times - Arts

"It is a known fact that retirements were going up because of big classes that were hired 20 years ago," said Deputy Commissioner Thomas Antenen, a police spokesman.

The New York Times

It is a known fact that we ladies have different knickers for different occasions, and for everyday knickers Marks & Spencer remains hard to beat, unless you want something that isn't violently striped, spotted or an excessively unattractive colour.

The Guardian - Lifestyle

30): Mad cow has many unknowns, but it is a known fact that there are fast and effective methods of testing cows for it, and they would add little more than a few cents per pound to the price of beef.

The New York Times - Science

It is a known fact that surface diffusion is dependent on temperature and concentration.

Chemical Engineering Science

Nowadays, it is a known fact that fossil fuels cause a series of ecological problems.

Materials for Renewable and Sustainable Energy

It is a known fact that taller people are perceived as more powerful than shorter ones.

Forbes

It is a known fact that students' perceptions of college attendance policies at times contradict those of the instructors.

Procedia - Social and Behavioral Sciences

It is a known fact that even human translators do not get full mark (1.0) using the BLEU evaluation [9].

EURASIP Journal on Audio, Speech, and Music Processing

It is a known fact that adsorption of the inhibitors is the main process affecting the corrosion rate of metals.

International Journal of Industrial Chemistry

Expert writing Tips

Best practice

Use "it is a known fact" when you want to introduce information that is widely accepted and needs no further proof. Be mindful, however, that overuse can make your writing sound repetitive or condescending.

Common error

Avoid using "it is a known fact" to introduce personal opinions or information that isn't genuinely well-established. This can undermine your credibility and weaken your argument.

Linguistic Context

The phrase "it is a known fact" functions as an introductory phrase used to preface a statement, asserting its validity based on common knowledge or widespread acceptance. This is supported by examples across Ludwig showcasing its use in academic, news, and general contexts, indicating its role in setting a foundational understanding.

Expression frequency: Very common

Frequent in

Science

46%

News & Media

33%

Formal & Business

5%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

The phrase "it is a known fact" is a commonly used introductory phrase that signals the certainty and widespread acceptance of the following statement. Ludwig AI analysis confirms its grammatical correctness and frequent usage across various domains, including science, news, and formal business writing. While versatile, it's important to use this phrase judiciously, ensuring that the information being introduced is, in fact, widely known and accepted. Alternatives like "it is widely recognized" or "it is well established" can be considered for subtle variations in emphasis. Overusing the phrase or applying it to unsubstantiated claims can weaken the impact and credibility of your writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

it is an established fact

Emphasizes the proven nature of the information.

it is widely recognized

Changes the emphasis to general acknowledgement, removing explicit mention of "fact".

it is generally accepted

Focuses on the acceptance of the idea rather than its factual nature.

it is well established

Highlights the proven or confirmed nature of the information.

it is common knowledge

Suggests the information is widely known and understood by most people.

it is understood

A more concise way of implying that something is agreed upon or assumed.

it is a given

Implies something is a basic assumption or premise.

it is beyond dispute

Emphasizes the undeniable nature of the information.

everyone knows

Shifts the focus to the universal awareness of the information.

it's no secret that

Highlights that the information is not confidential or hidden.

FAQs

What can I say instead of "it is a known fact"?

You can use alternatives like "it is widely recognized", "it is generally accepted", or "it is well established" depending on the context.

Is "it is a known fact" formal or informal?

The phrase "it is a known fact" is generally considered neutral to slightly formal. It can be used in both academic and professional writing, though more concise alternatives might be preferred in very formal contexts.

When should I use "it is a known fact"?

Use "it is a known fact" when introducing information that is widely accepted and doesn't require further elaboration or proof. However, ensure that the information is indeed well-established to avoid undermining your credibility.

What's the difference between "it is a known fact" and "everyone knows"?

"It is a known fact" is more formal and emphasizes the factual nature of the information. "Everyone knows" is less formal and highlights the widespread awareness of the information.