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
are required to be input
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "are required to be input" is correct and usable in written English.
It can be used when specifying that certain data or information must be entered into a system or form. Example: "All necessary details are required to be input before submitting the application."
✓ Grammatically correct
Science
News & Media
Formal & Business
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
When all the input packets are required to be recovered by the destination node, we can either retransmit the input packets that are not recovered or use the precode technique as in Raptor codes [29].
Specifically, we consider the case where the control inputs are required to be a priori bounded and the velocity (second state) is not available for feedback.
Science
However, Gaussian sources cannot be fed directly to the family of baker's map encoders, whose inputs are required to be bounded ([−1,+1]).
In order to stabilize the amplifier, an amplifier with ultra-high input impedance is required to be useful as a circuit that removes the input bias current from the input potential.
Science
For all 17 GPS gene-specific assays, the absolute value of the average percent accuracy at the nominal, one-half and the one-quarter qPCR input was required to be less than 25% in order to meet pre-specified criteria.
Science
In order to get the best performance in the wavelet denoising algorithm, the length of the input signal is required to be a power of two [ 37].
Science
On the other hand, this ant colony-based model could automatically determine the number of clusters that was critically required to be input in other clustering algorithms such as k-means, fuzzy c-means, and e-m clustering.
The derivative signals of input/output are required to design the optimal input, and filters are used to obtain the derivative signals.
Science
Nevertheless, these materials cannot be used for certain learning activities, such as when learners are required to observe program behavior where input data are changed individually, because the input data are fixed.
With a clear definition of what a customer need is, companies are able to get the inputs that are required to succeed at innovation.
To determine how much energy is used in an AD plant and how much is generated, a boundary is required to determine which elements are inputs and which are outputs from the system.
Expert writing Tips
Best practice
Use this phrase when you want to emphasize that a specific action (inputting data) is not optional.
Common error
While grammatically correct, overuse of the passive voice can make your writing sound less direct and less engaging. Consider using active voice constructions when appropriate, such as "You must enter the data" instead of "Data is required to be input."
Source & Trust
60%
Authority and reliability
3.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are required to be input" functions as a passive construction indicating that certain data or information must be entered into a system. As Ludwig indicates, this construction is usable in written English.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, "are required to be input" is a grammatically correct passive construction used to convey that specific information or data must be entered. Ludwig confirms its validity in written English. While technically sound, be mindful of overusing passive voice and consider more direct alternatives for increased clarity and engagement. This phrase leans towards a formal register and is expected to appear in technical or official documents, yet the expression is rarely used in any context.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
must be entered
Replaces the passive voice construction with a more direct active voice.
must be inputted
Emphasizes the obligation to input, similar to "must be entered".
need to be entered
Uses "need" instead of "required", suggesting a necessity.
need to be inputted
Similar to "need to be entered", but uses "inputted" as the verb form.
have to be input
Uses "have to" to indicate a requirement.
should be inputted
Uses "should" to express a recommendation or expectation rather than a strict requirement.
are necessary to input
Rephrases the requirement using "necessary" and an infinitive.
are to be entered
Employs a more formal tone to express the requirement.
is mandatory to enter
Uses "mandatory" to emphasize the obligatory nature of the input.
demands to be input
Employs a strong verb to emphasize the necessity of the input.
FAQs
How can I rephrase "are required to be input" to sound more direct?
You can use active voice constructions such as "must be entered", "need to be entered", or "should be inputted depending on the context.
Is "are required to be input" the same as "must be input"?
While similar, "must be input" is more concise and direct. "Are required to be input" emphasizes the necessity through a more formal, passive construction, whereas "must be input" presents the requirement more forcefully.
What's the difference between "are required to be input" and "are required as input"?
"Are required to be input" indicates that data needs to be entered, while "are required as input" signifies that certain elements serve as necessary components for a process or system. The former focuses on the action of inputting, while the latter highlights the role of the elements themselves.
When is it best to use "are required to be input" versus other alternatives?
Use "are required to be input" in formal contexts or when emphasizing the process of data entry. In more casual or direct writing, alternatives like "must be entered" or "need to be inputted" may be more appropriate.
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
60%
Authority and reliability
3.5/5
Expert rating
Real-world application tested