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
use as necessary
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "use as necessary" is correct and usable in written English.
It can be used when providing instructions or advice, or when expressing the idea that something should be used only if needed. For example: "We have provided a list of essential supplies for the journey. Please use as necessary."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(3)
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
6 human-written examples
Mr. Curry added that BP had given $75 million to each state to use as necessary for such training.
News & Media
Young athletes emulate their idols, and they may view steroid use as necessary to compete for a college scholarship or a job in the majors (because everyone else is doing it).
News & Media
"Use as necessary," the post reads.
News & Media
People taking slow-release morphine should also be provided with immediate-release ("rescue") morphine to use as necessary, for pain spikes (breakthrough pain) that are not suppressed by the regular medication.
Wiki
Such data are collected and transferred from hospitals to the database under government support and funding with each hospital allowing such transfer and subsequent data use as necessary.
Science
Second, previous studies have found that clients of low-fee FSWs have insufficient knowledge and risk perception of HIV/STI infection and may be unlikely to view condom use as necessary [ 36, 37].
Science
Human-verified similar examples from authoritative sources
Similar Expressions
53 human-written examples
2 Old cloths washed and re-used as necessary.
Science
Although the treatment of patients in the TR-DGU is not standardised, it represents the general approach to coagulation management of major trauma patients in Germany, with FFP administered as first-line haemostatic therapy, and platelet concentrate and RBC used as necessary.
Science
If we had them, we would use them as necessary.
News & Media
Tie loosely, and use as much as necessary to retain the shape.
Wiki
Make sure the wipes are moist, and use as many as necessary to completely cover the fabric of the boots.
Wiki
Expert writing Tips
Best practice
When providing instructions, follow "use as necessary" with specific conditions or indicators to help the user determine when its application is appropriate.
Common error
Avoid using "use as necessary" as a generic filler. Always ensure the context genuinely requires the user to exercise their judgment; otherwise, provide clearer, more directive instructions.
Source & Trust
76%
Authority and reliability
4.4/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "use as necessary" primarily functions as an instructional directive, advising the user to employ something only when the situation warrants it. Ludwig AI shows this usage across diverse contexts, reinforcing its role as a conditional recommendation.
Frequent in
Science
45%
News & Media
25%
Wiki
15%
Less common in
Formal & Business
5%
Encyclopedias
5%
Reference
5%
Ludwig's WRAP-UP
The phrase "use as necessary" serves as a conditional instruction, advising the user to apply something only when the situation warrants it. Ludwig AI analysis indicates its presence across diverse contexts like News & Media, Science and Wiki, reinforcing its versatility. Although grammatically correct, ensure you provide adequate context, because in certain scenarios more specific instructions may be required. Common synonyms include "use as needed" and "employ when required", each with slight variations in tone. When employing "use as necessary", provide concrete indicators to guide the user's judgment.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
utilize as required
Replaces 'use' with 'utilize' and 'necessary' with 'required', formalizing the tone.
employ when needed
Substitutes 'use' with 'employ' and 'as necessary' with 'when needed', simplifying the phrase.
apply if required
Changes 'use' to 'apply' and 'as necessary' to 'if required', offering a more conditional tone.
implement as appropriate
Replaces 'use' with 'implement' and 'as necessary' with 'as appropriate', adding a layer of professional judgment.
administer as indicated
Changes 'use' to 'administer' and 'as necessary' to 'as indicated', suitable for medical or technical contexts.
leverage when essential
Replaces 'use' with 'leverage' and 'as necessary' with 'when essential', emphasizing strategic importance.
exercise at your discretion
Substitutes 'use' with 'exercise' and 'as necessary' with 'at your discretion', offering more autonomy to the user.
resort to if unavoidable
Changes 'use' to 'resort to' and 'as necessary' to 'if unavoidable', suggesting a last-measure approach.
apply as the situation demands
Replaces 'use' with 'apply' and 'as necessary' with a more descriptive 'as the situation demands'.
draw upon as warranted
Substitutes 'use' with 'draw upon' and 'as necessary' with 'as warranted', giving it a conditional yet decisive tone.
FAQs
How can I rewrite the sentence “Use this tool as necessary”?
You can replace "use as necessary" with phrases like "use as needed", "employ when required", or "apply if required" to convey a similar meaning with slight variations in tone or formality.
What's the difference between “use as needed” and “use as necessary”?
"Use as needed" implies using something when a want or convenience arises. "Use as necessary" indicates employing something when a real need or essential requirement exists. The latter suggests a more critical or less discretionary application.
Is it grammatically correct to say “use as necessary”?
Yes, "use as necessary" is grammatically correct. It functions as an instruction or recommendation to employ something only when the situation warrants it.
Are there contexts where “use as necessary” is not appropriate?
While generally acceptable, "use as necessary" might be too vague in contexts requiring precise instructions. In such cases, provide specific criteria or conditions that clearly indicate when something should be used to avoid ambiguity.
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
76%
Authority and reliability
4.4/5
Expert rating
Real-world application tested