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
by midnight
Grammar usage guide and real-world examplesUSAGE SUMMARY
"by midnight" is correct and usable in written English.
You can use it when indicating a specific time before which an action must take place. For example: "The project must be finished by midnight."
✓ Grammatically correct
News & Media
Academia
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
56 human-written examples
By midnight, I'm in bed.
News & Media
By midnight, Manhattan was gone.
News & Media
"It'll be there by midnight.
News & Media
We arrived by midnight.
News & Media
I'm sleeping by midnight.
News & Media
Be home by midnight.
News & Media
By midnight, the crowds were lining up.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
4 human-written examples
"By that evening.
News & Media
By noon, maybe 115.
News & Media
"We sold out by noon".
News & Media
By noon, disaster had struck.
News & Media
Expert writing Tips
Best practice
In formal contexts, "by midnight" is acceptable, but consider alternatives like "before 12:00 AM" for added precision.
Common error
Avoid using "at midnight" when you mean "by midnight". "At midnight" refers to a specific point in time, whereas "by midnight" indicates a deadline before or at that time.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "by midnight" functions primarily as an adverbial phrase of time. It modifies a verb or clause to specify a deadline or the latest possible time for an action or event to occur. Ludwig AI confirms its usability in written English.
Frequent in
News & Media
69%
Academia
7%
Formal & Business
0%
Less common in
Science
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "by midnight" is a common and grammatically sound adverbial phrase used to set deadlines or indicate the latest possible time for an action. As Ludwig AI confirms, it is versatile and applicable in various contexts, but particularly prevalent in "News & Media" and academia. While it is considered neutral, formal alternatives exist for added precision. To avoid confusion, it's crucial to distinguish it from "at midnight", which refers to a specific point in time. Common usage patterns and authoritative sources reinforce its widespread acceptance and utility. Remember to use "by midnight" to specify a deadline accurately, ensuring clarity and avoiding ambiguity in your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
before midnight
Specifies the latest time something can happen, emphasizing anticipation.
no later than midnight
Emphasizes the deadline aspect, making it clear that the task cannot be completed after this time.
at the latest by midnight
Reinforces that midnight is the absolute latest time.
by 12 AM
Uses the numerical format to specify the time, suitable for formal contexts.
at or before midnight
Includes the possibility of something happening exactly at midnight.
on or before midnight
Similar to "at or before midnight" but with a slightly different emphasis.
prior to midnight
A more formal way of saying before midnight, suitable for professional writing.
before the clock strikes twelve
An idiomatic expression suggesting an impending deadline.
not later than the stroke of midnight
A more dramatic and emphatic way to express the deadline.
up to midnight
Highlights the period leading up to the deadline.
FAQs
How do I use "by midnight" in a sentence?
"By midnight" indicates a deadline or the latest possible time for something to occur. For example, "All applications must be submitted "by midnight" Friday."
What's the difference between "by midnight" and "at midnight"?
"By midnight" signifies that something must be completed before or on midnight, whereas "at midnight" pinpoints a specific moment in time. Using "by midnight" indicates a deadline, while "at midnight" refers to a particular point.
Which is correct: "by midnight" or "until midnight"?
Both phrases are correct but have slightly different meanings. "By midnight" indicates a deadline, whereas "until midnight" implies something continues up to that time. Depending on the context, one may be more appropriate than the other.
Are there formal alternatives to using "by midnight"?
Yes, in formal contexts, you can use phrases such as "before midnight" or "no later than midnight" to convey the same meaning.
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