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
millions upon millions
Grammar usage guide and real-world examplesUSAGE SUMMARY
"millions upon millions" is an accurate and commonly used phrase in written English.
You can use it to emphasize a large quantity of something. For example, "The animal shelter was overcrowded with hundreds of cats and dogs and millions upon millions of fleas."
✓ Grammatically correct
News & Media
Formal & Business
Science
Alternative expressions(20)
untold millions
millions and millions
countless millions
vast numbers of millions
numerous millions
a plethora of millions
hundreds upon hundreds
miles upon miles
thousand upon thousand
hundreds of millions
tens upon tens
a multitude of millions
a small fortune
hundred of millions
substantial millions
years upon years
thousands upon thousands
tons upon tons
a few tens of millions
several tens of millions
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
55 human-written examples
From 1840 to 1918, millions upon millions of ducks, geese and shorebirds were killed.
News & Media
Wages are extra — millions upon millions extra.
News & Media
Millions upon millions watched India beat Pakistan in the final.
News & Media
The millions upon millions invested in the betting?
News & Media
He wants to deport millions upon millions of undocumented immigrants.
News & Media
But there it was, millions upon millions of words.
News & Media
The Knicks make millions upon millions of dollars a year.
News & Media
Millions upon millions of families are suffering, but mostly in silence.
News & Media
They had millions upon millions of those cells without any cell venting".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
After 22nd to 24th days, upon the first treatment of ampicillin, the counts of both E coli 16 (pUC- gfp) and E. coli 16 (pUC8:16 gfp) transformants in feces were increased.
Venetians in the 15th century and the French in the 17th and 18th centuries speculated upon the possibility of making a canal through the isthmus.
Encyclopedias
Expert writing Tips
Best practice
Use "millions upon millions" to convey a sense of extremely high quantity, beyond simple enumeration. It adds emphasis.
Common error
While effective for emphasis, avoid using "millions upon millions" repeatedly in formal writing. Opt for more precise figures or alternatives like "countless millions" to maintain a professional tone.
Source & Trust
81%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "millions upon millions" functions as a quantifier, specifically an intensifier used to emphasize a very large quantity. Ludwig confirms that this is a grammatically correct phrase.
Frequent in
News & Media
77%
Formal & Business
15%
Science
8%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "millions upon millions" is a grammatically correct phrase used to emphasize a very large quantity, as confirmed by Ludwig. It is most frequently found in journalistic and descriptive contexts. While effective for emphasis, it's crucial to use this phrase judiciously, particularly in formal writing, where precision and conciseness are valued. Alternative options, such as stating a specific numerical range or employing phrases like "untold millions", can provide similar emphasis without sacrificing formality.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
millions and millions
A slightly more emphatic repetition of "millions".
countless millions
Emphasizes the inability to count the millions, adding a sense of boundlessness.
uncountable millions
Similar to "countless millions", stressing the inability to count.
untold millions
Indicates that the number of millions is so large it's difficult to ascertain.
vast numbers of millions
Highlights the immensity of the number in terms of millions.
numerous millions
Focuses on the abundant quantity of millions.
virtually millions
Emphasizes the amount of millions almost reaches unquantifiable state.
a plethora of millions
Replaces the repetition with a more sophisticated term for abundance.
a great many millions
Uses "great many" to amplify the sense of quantity of the millions.
tons of millions
Informal way to express a large amount of millions.
FAQs
How can I use "millions upon millions" in a sentence?
Use "millions upon millions" to emphasize a very large number, such as "The project cost "millions upon millions" of dollars".
What's a more formal alternative to "millions upon millions"?
For a more formal tone, consider using phrases like "untold millions" or stating a specific numerical range instead.
Is it redundant to say "millions upon millions"?
While it is repetitive, the phrase "millions upon millions" is used for emphasis. However, be mindful of overuse, as it can become tedious.
When is it appropriate to use "millions upon millions"?
It's appropriate when you want to stress the vastness of a number in a way that a simple "millions" doesn't convey. Suitable in journalistic or descriptive writing where impact is desired.
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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
4.1/5
Expert rating
Real-world application tested