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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
on request
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "on request" is correct and usable in written English.
You can use it to refer to something that will be provided or made available upon someone's request. For example, "The school library can provide online resources on request."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(20)
upon request
if requested
when asked for
per request
available if requested
subject to request
by application
by invitation
as needed
is equivalent to
in the wishes of
rapidly thereafter
for the immediate future
Very soon
somewhere later
one week before
at the early time
in the next weeks
it is important to remember
during the previous years
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
The accords call for exchange "on request".
News & Media
Wooden cots provided on request.
News & Media
(Prices are on request).
News & Media
Price on request; hemmerle.com.com
News & Media
Guided tours on request.
News & Media
Everything is on request.
News & Media
Prices on request.
News & Media
Museum workers will play it on request.
News & Media
On request, they deliver to classrooms.
News & Media
Itineraries individually planned, price on request.
News & Media
Hammerle bracelet, price on request; fd-inspired.com.
News & Media
Expert writing Tips
Best practice
Use "on request" to clearly indicate that something will only be provided or done if someone specifically asks for it, avoiding assumptions or automatic delivery.
Common error
Avoid implying that something is automatically provided when it's only available "on request". Always clearly state that the action or item is contingent on a specific request to prevent misunderstandings.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "on request" functions as a prepositional phrase, typically modifying a verb or noun to indicate the condition under which something is provided or performed. Ludwig AI confirms the phrase is correct and usable. Examples include "Data is available on request" and "Prices are on request".
Frequent in
News & Media
48%
Science
40%
Formal & Business
12%
Less common in
Social Media
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "on request" is a common prepositional phrase used to indicate that something is available or will be done only if specifically asked for. According to Ludwig AI, the phrase is grammatically correct and appropriate for use in written English. It's found frequently in news, scientific, and business contexts, maintaining a neutral register. To ensure clarity, use it to explicitly state that an action or item requires a request, rather than assuming it is automatically provided.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
upon request
Slightly more formal synonym, emphasizing the condition of a request being made.
per request
A more concise and slightly less common way of saying "on request".
available if requested
Combines the concept of availability with the condition of a request.
if requested
Highlights the conditional nature of the availability or action.
subject to request
Highlights that provision is dependent on a request being submitted.
when asked for
Focuses on the act of asking as the trigger for providing something.
at your asking
Emphasizes the direct action of the requestor.
by application
Suggests a more formal process of requesting, typically involving a written form.
by invitation
Implies that something is available only to those who specifically ask for it.
as needed
Implies availability based on necessity and a presumed request.
FAQs
How do I properly use "on request" in a sentence?
Use "on request" to specify that something will be provided or done only if someone asks for it. For example, "Additional information is available "on request"".
What are some alternatives to using the phrase "on request"?
You can use alternatives like "upon request", "if requested", or "when asked for" depending on the context.
Is there a difference between "on request" and "upon request"?
While both phrases are largely interchangeable, "upon request" is often perceived as slightly more formal than "on request". The meaning remains the same.
In what situations is it appropriate to use the phrase "on request"?
"On request" is appropriate in any situation where you want to clarify that something is not automatically provided but will be made available if someone specifically asks for it. This is common in customer service, documentation, and general communication.
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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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested