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
As needed
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "As needed" is correct and usable in written English.
It can be used to indicate that something should be done or provided only when it is necessary or required. Example: "Please provide support as needed throughout the project to ensure its success."
✓ Grammatically correct
Wiki
News & Media
Science
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
Repeat step as needed.
Wiki
Include subtopics, as needed.
Wiki
Caulk as needed.
Wiki
Keep trimmed as needed.
Wiki
Take orally as needed.
Wiki
Take breaks as needed.
Wiki
Repair cracks as needed.
Wiki
Make adjustments as needed.
Wiki
Alternate as needed.
Wiki
Replace insulation as needed.
Wiki
Quilt as needed.
Wiki
Expert writing Tips
Best practice
Use "as needed" to clearly indicate that an action or resource should only be applied when there is a demonstrable need, avoiding unnecessary overuse or waste.
Common error
Avoid using "as needed" as a default instruction without specifying what triggers the need. Be specific about the conditions that warrant the action to prevent ambiguity.
Source & Trust
70%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "as needed" functions as an adverbial phrase, modifying a verb or clause to indicate that an action should be performed only when necessary. Ludwig confirms this usage across various contexts.
Frequent in
Wiki
40%
News & Media
20%
Science
15%
Less common in
Formal & Business
10%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "as needed" is a versatile adverbial phrase used to indicate that an action or resource should be applied only when necessary. As confirmed by Ludwig, its usage spans across diverse contexts, from informal wikis to professional and scientific publications. To ensure clarity, it's crucial to specify the conditions that trigger the 'need', thus avoiding ambiguity and promoting efficient resource allocation. Alternatives like "when necessary" or "as required" can be used depending on the desired level of formality and emphasis.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
when necessary
Focuses on the condition of necessity, omitting the direct reference to requirement.
as required
Emphasizes the aspect of obligation or requirement, similar to the original phrase.
if necessary
Highlights the conditional aspect, suggesting something is done only under certain conditions.
when required
Combines the temporal aspect with the condition of being required.
on demand
Implies availability and readiness to be provided immediately when requested.
as the situation demands
Highlights the situation as the driver of the need.
contingent upon need
Uses more formal language to express dependency on a specific need.
subject to requirement
Focuses on the dependence on a formal requirement.
per requisite
Uses a more concise and slightly less common phrase with a similar meaning.
depending on the need
Highlights the dependency on the existence and nature of a specific need.
FAQs
How do I use "as needed" in a sentence?
You can use "as needed" to indicate that something should be done or provided only when it is necessary or required. For example, "Please provide support as needed throughout the project to ensure its success."
What are some alternatives to "as needed"?
Alternatives include "when necessary", "as required", or "if necessary" depending on the specific context.
Is it grammatically correct to use "as needed"?
Yes, "as needed" is grammatically correct and commonly used in written English to indicate conditionality or contingency.
What's the difference between "as needed" and "as required"?
While both phrases are similar, "as needed" may imply a more flexible or discretionary approach, whereas "as required" suggests a more formal or mandatory requirement.
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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
70%
Authority and reliability
4.1/5
Expert rating
Real-world application tested