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
ballpark number
Grammar usage guide and real-world examplesUSAGE SUMMARY
"ballpark number" is a common expression in written English.
You can use it when you are giving an approximate amount or range of numbers. For example, "I don't know exactly how much it will cost, but it will probably be somewhere in the ballpark of $500."
✓ 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
12 human-written examples
And the distance is almost always a ballpark number because trails are so hard to accurately measure.
News & Media
"The 300,000 acres was just a starting point — a ballpark number to begin the actual mapping process," he said.
News & Media
He conceded that "I don't even know what the ballpark number for a server is — for me, it would be like knowing what the price of a sword is".
News & Media
This ballpark number is supported by another analysis based off a soybean input [16].
Science
300: The ballpark number of total staff members needed by teams participating this year.
News & Media
Facebook wouldn't disclose a ballpark number of apps impacted by the error.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
48 human-written examples
If these ballpark numbers are correct, the World Cup comes in at a much less shocking 230g CO230g
News & Media
I know that you cannot discuss or directly quote your sources, but can you give a ballpark figure for the number of people you talked to for this article?
News & Media
But to throw out some ballpark figure, an actual number of the weeks, months or years this woman we had grown to care about had left to live, meant shouldering the responsibility none of us were eager to be reminded of – that is, our potential role in hastening her death because of poor clinical decisions based on the wrong prognosis.
News & Media
Users don't know which of Amazon's sites was impacted, who their email address could have been exposed to, or any ballpark figure of the number of victims.
News & Media
MinorLeagueNews.com has also named the park number two on its top ten minor league ballparks for 2004 and number seven for 2005.
Wiki
Expert writing Tips
Best practice
When using the phrase "ballpark number", ensure the audience understands that the value is an estimation and not a precise figure. It prevents misinterpretations and sets realistic expectations.
Common error
Avoid presenting a "ballpark number" as an exact figure, especially in contexts where accuracy is critical. Always clarify that it's an approximation to prevent misleading stakeholders or making flawed decisions.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "ballpark number" functions as a quantifier, specifically indicating an approximate quantity. It modifies a noun (something that can be counted) to show it's not an exact count. Examples in Ludwig show its use in contexts ranging from cost estimations to staff numbers.
Frequent in
News & Media
40%
Science
30%
Wiki
10%
Less common in
Formal & Business
10%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
The phrase "ballpark number" is a commonly used term to indicate an approximation or estimate of a numerical value. As Ludwig AI confirms, the phrase is grammatically sound and appears frequently across varied sources, including news, science, and wiki articles. While it's suitable for many contexts, more formal settings may benefit from alternatives like "approximate figure" or "rough estimate". Key to its appropriate use is understanding that it signifies a non-precise value, serving to give a general sense of scale rather than an exact measurement. Remember to provide context when you do use it, and to avoid using it in place of precise figures when accuracy matters.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
ballpark figure
Replaces "number" with "figure", maintaining the idiomatic sense.
rough estimate
Emphasizes the lack of precision in the estimation.
approximate figure
Highlights the inexact nature of the numerical value.
guesstimate
Combines 'guess' and 'estimate', implying a rough calculation.
rough calculation
Focuses on the rudimentary nature of the computation.
tentative number
Implies that the number is not final or definitive.
order of magnitude
Indicates an estimation within a power of ten.
preliminary estimate
Suggests that the estimation is subject to revision.
working estimate
Indicates an estimate that is currently being used but may change.
general idea
Shifts from a numerical value to a conceptual understanding.
FAQs
How can I use "ballpark number" in a sentence?
You can use "ballpark number" to indicate an approximate value or range. For example, "The cost of the project is a "ballpark number", around $1 million."
What's a synonym for "ballpark number"?
Synonyms for "ballpark number" include "rough estimate", "approximate figure", or "guesstimate".
Is it appropriate to use "ballpark number" in formal writing?
While "ballpark number" is widely understood, in formal writing, consider using alternatives like "approximate figure" or "rough estimate" for a more professional tone.
How accurate is a "ballpark number"?
A "ballpark number" is intentionally not precise; it's meant to give a general sense of scale or value. It provides a "general idea" rather than an exact measurement.
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