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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
numbers only
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "numbers only" is correct and usable in written English.
It can be used when specifying that only numerical values should be provided or accepted, often in forms or data entry contexts. Example: "Please enter your age in the box below, ensuring that you use numbers only."
✓ Grammatically correct
Academia
Formal & Business
News & Media
Alternative expressions(14)
digits only
numerical values only
numerical input only
numeric characters only
statistics only
Input digits exclusively
Only digits are permitted
enter numerical characters only
Numerical input only
Digits only, please
please enter only digits
Enter digits only
Enter numerical characters only
Insert numbers only
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
But numbers only get you so far.
News & Media
And those numbers only represent mining itself.
News & Media
The numbers only grew from there.
News & Media
These numbers only tell part of the story, though.
Academia
Phone is required, and please enter numbers Only.
Academia
But dwindling numbers only heightened Mrs. Spaisman's determination.
News & Media
But numbers only hinted at the place's importance in summer.
News & Media
Numbers only mean what we make of them.
News & Media
The species now numbers only 1400 or 1500.
News & Media
Are credit card numbers only available during transmission?
News & Media
The numbers only seem to grow during fashion weeks.
News & Media
Expert writing Tips
Best practice
When specifying input requirements for a form, clearly state "numbers only" to avoid ambiguity and ensure users enter the correct data type. For example, when requesting age or phone number, specify "numbers only" to prevent non-numerical characters.
Common error
Avoid assuming users will automatically know to enter only numbers. Failing to explicitly state "numbers only" can lead to users entering text, symbols, or spaces, causing errors in data processing. Be direct and clear in your instructions.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "numbers only" primarily functions as an instruction or specification, commonly used in forms, data entry fields, or technical documentation to restrict input to numerical values. Ludwig's examples illustrate this usage across various contexts.
Frequent in
News & Media
39%
Academia
24%
Formal & Business
15%
Less common in
Science
12%
Wiki
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "numbers only" is a common and grammatically correct instruction used to specify that only numerical values are permitted. As shown by Ludwig, this phrase appears across a variety of contexts, including news, academia, and formal business settings, indicating its broad applicability. While semantically similar alternatives such as "numerical values exclusively" exist, "numbers only" remains a straightforward and widely understood choice. Ludwig AI confirms the phrase's usability in written English and emphasizes its role in specifying numerical input requirements. When crafting content, consider using "numbers only" for clear and concise communication to enhance user understanding and ensure data accuracy.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
numerical values exclusively
Focuses on the type of data permitted, highlighting that only numerical values are acceptable.
digits exclusively
Specifies that only numerical digits are permitted, excluding other characters.
numeric characters alone
Emphasizes that only characters representing numbers are allowed.
figures exclusively
Similar to "numbers only", but might be used when referring to statistics or amounts.
only numerals
Uses a more formal term for numbers, emphasizing the exclusion of other data types.
strictly numerical data
Highlights the requirement for data to be completely numerical with no exceptions.
purely numerical entries
Indicates that entries should be exclusively numeric in nature.
numeric input only
Specifically directs the user that only numbers are the correct input
just the numbers
A more casual phrasing which still conveys the exclusivity of numerical data.
numeric data alone
Highlights the sole acceptance of numeric data
FAQs
How can I use "numbers only" in a sentence?
You can use "numbers only" to specify that only numerical values are allowed in a particular context. For example, "Please enter your phone number using "numbers only"."
What is a more formal way to say "numbers only"?
A more formal alternative to "numbers only" is "numerical values exclusively" or "numeric characters alone", which are suitable for professional documents or technical instructions.
Which is correct, "numbers only" or "numerals only"?
Both "numbers only" and "numerals only" are correct, but "numbers only" is more common and less formal. The choice depends on the context and desired level of formality.
When should I use "numbers only" versus "letters only"?
"Numbers only" should be used when you require a numerical input, such as age or ID. "Letters only" should be used when you require alphabetic input, such as a name or city. Being precise avoids ambiguity and ensures correct inputs.
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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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested