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
upon demand
Grammar usage guide and real-world examplesUSAGE SUMMARY
"upon demand" is a correct and usable phrase in written English.
It is typically used to refer to an action that can be done if requested or necessary. For example, "The manager was willing to provide additional information upon demand."
✓ Grammatically correct
Academia
News & Media
Science
Alternative expressions(20)
under ordering
with the application
obtainable by request
at the ready
under requirement
as required
under demand
upon processing
on applying
upon requested
under needs
upon implementation
upon application
under requirements
as requested
following the application
instantly accessible
upon requesting
upon request
subject to request
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
59 human-written examples
legislature to make abortion available upon demand.
News & Media
The rates vary based upon demand.
News & Media
CMEs are independent layers of protection that must be highly reliable upon demand.
Funds deposited in such accounts shall be available for withdrawal immediately upon demand.
Academia
Note that Octave is not installed on the SDS; however, it can be installed upon demand.
Academia
The Engineering Library offers course specific instruction upon demand for groups of faculty, staff, and students.
Academia
MS-DOS Kermit can be such a task--a Kermit server upon demand.
Academia
There were even times when entire acts were repeated upon demand!
Academia
The slices are printed by fused deposition, and are communicated upon demand.
Science
And the stockmarket bust, through the equity-wealth effect, has probably had an even greater depressant effect upon demand.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
However, Resolution 1559 contains a second, less remarked-upon demand.
News & Media
Expert writing Tips
Best practice
Use "upon demand" when you want to emphasize the immediate availability or responsiveness of something. For example, "The funds are available upon demand" conveys a stronger sense of accessibility than "The funds are available when requested".
Common error
While grammatically correct, using "upon demand" in casual conversation or informal writing can sound overly formal. Opt for simpler alternatives like "when asked" or "if needed" to maintain a natural tone.
Source & Trust
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "upon demand" functions as an adverbial phrase, modifying a verb by specifying when an action will occur. It indicates that something will happen only when requested or required. Ludwig AI confirms its correct usage across diverse contexts.
Frequent in
Academia
33%
News & Media
33%
Science
33%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "upon demand" is a versatile prepositional phrase that signifies immediate availability or action when requested. Ludwig AI confirms it's grammatically correct and widely used across various domains, including academia, news media, and science. While appropriate for formal and neutral contexts, it may sound overly formal in casual settings. Alternatives like "on request" or "when needed" can be more suitable in informal situations. Its authoritative sources, like The New York Times and Cornell University, contribute to its perceived credibility. Therefore, when aiming to convey a sense of immediate responsiveness or availability, "upon demand" serves as an effective and well-recognized phrase.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
on request
A more concise and common alternative.
when requested
Focuses on the act of requesting as the trigger.
when needed
Emphasizes the necessity as the condition for action.
as required
Highlights the requirement or necessity for something.
when called for
Suggests a more formal or official need.
available immediately
Highlights the immediate availability of something.
at the ready
Conveys preparedness and immediate availability.
instantly accessible
Focuses on the ease and speed of access.
at one's beck and call
Implies immediate availability and service.
subject to requisition
Emphasizes a formal process of requesting something.
FAQs
How can I use "upon demand" in a sentence?
You can use "upon demand" to indicate that something is available or will be done when requested. For example, "The report is available "on request"" or "Services are provided "as needed"".
What's a more formal alternative to "upon demand"?
While "upon demand" is already fairly formal, you could use phrases like "subject to requisition" or "as required" in highly formal or legal contexts.
What can I say instead of "upon demand" in a casual setting?
In casual settings, consider using alternatives such as "when asked", "if you need it", or ""on request"" to maintain a more conversational tone.
Is "upon demand" interchangeable with "on demand"?
While similar, "on demand" often refers to services or content available at any time, while "upon demand" emphasizes the act of requesting. For example, you might say "streaming services are available on demand", but "funds are released upon demand".
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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
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested