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
Many hours
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Many hours" is correct and usable in written English.
It can be used to indicate a significant amount of time spent on an activity or task. Example: "I spent many hours studying for the exam to ensure I was well-prepared."
✓ Grammatically correct
News & Media
Science
Wiki
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
Many hours lost from my life".
News & Media
Many hours of milling were sufficient to produce nanocrystalline powders.
Science
Many hours of entertaining storytelling lie ahead".
Wiki
"Many hours" ⇒ Hours of care per patient day ≥ 6.
Science
Just many hours.
News & Media
Delivery is many hours away.
News & Media
How many hours of layover are acceptable?
News & Media
We will not eat for many hours.
News & Media
I do this for many hours.
News & Media
"I spent many hours there," she says.
News & Media
The job would take many hours.
News & Media
Expert writing Tips
Best practice
When emphasizing the dedication and effort put into a task, use "many hours" to highlight the time commitment. For example, "I spent "many hours" perfecting this recipe."
Common error
While "many hours" is acceptable, avoid overusing it in formal writing. Instead, opt for more sophisticated alternatives like "considerable time" or "prolonged duration" to maintain a professional tone.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "many hours" functions as a determiner-noun phrase, quantifying time. According to Ludwig AI, it's grammatically correct and widely used. The function is to specify a significant duration devoted to an activity or state.
Frequent in
News & Media
64%
Science
20%
Wiki
10%
Less common in
Formal & Business
4%
Academia
1%
Encyclopedias
1%
Ludwig's WRAP-UP
The phrase "many hours" is a grammatically sound and commonly used expression to indicate a substantial amount of time, as confirmed by Ludwig AI. It functions to emphasize the duration of an activity or event. While suitable for news, general writing, and even some scientific contexts, more formal alternatives might be preferred in academic or highly professional settings. Consider using phrases like "considerable time" or "prolonged duration" for increased formality. Remember to use "many hours" when you want to stress the time commitment involved in a task or experience.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
A great deal of time
Indicates a large quantity of time spent, mirroring the meaning of "many hours".
Considerable time
Emphasizes the significant amount of time involved, similar to "many hours".
Substantial amount of time
Highlights the largeness of the time quantity.
Extended duration
Highlights the length of the time period, focusing on its protracted nature.
Long stretch of time
Implies an uninterrupted and considerable period.
Countless hours
Indicates an indefinite and large number of hours.
Prolonged period
Stresses the extended nature of the timeframe, often used in formal contexts.
Innumerable hours
Suggests the hours are too many to count, emphasizing the quantity.
Significant time investment
Focuses on the dedication of time to a specific activity or purpose.
Several hours
Specifies an unspecified number of hours more than two, less emphatic than "many hours".
FAQs
How can I use "many hours" in a sentence?
You can use "many hours" to describe a significant amount of time spent on an activity. For example, "She dedicated "many hours" to completing the project".
What are some alternatives to using "many hours"?
Instead of "many hours", you could use phrases like "considerable time", "extended duration", or "prolonged period" depending on the context.
Is it better to say "many hours" or "a lot of hours"?
"Many hours" is generally considered more formal than "a lot of hours". The best choice depends on the tone and context of your writing.
What's the difference between "several hours" and "many hours"?
"Several hours" implies a smaller, less definite quantity of time (typically 3-5 hours), while "many hours" suggests a larger, more significant duration.
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
4.5/5
Expert rating
Real-world application tested