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
is to be
Grammar usage guide and real-world examplesUSAGE SUMMARY
"is to be" is correct and usable in written English.
You can use it to describe an obligation, expectation, or to introduce a purpose. For example: "The room is to be used only for storage."
✓ Grammatically correct
News & Media
Science
Wiki
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
She is to be applauded.
News & Media
That is to be welcomed.
News & Media
That is to be applauded.
News & Media
This is to be commended.
News & Media
Milly is to be pitied.
News & Media
It is to be savoured".
News & Media
Casting is to be announced.
News & Media
Consistency is to be valued.
News & Media
"Samutsevich is to be released".
News & Media
The penthouse is to be delivered vacant.
News & Media
That, however, is to be expected.
News & Media
Expert writing Tips
Best practice
Use "is to be" to express formal obligations, scheduled events, or instructions. For example, "The meeting is to be held next Tuesday."
Common error
Avoid using "is to be" in casual conversation. Opt for simpler alternatives like "will be" or "is going to be" for a more natural tone.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is to be" functions as an auxiliary verb phrase used to express future actions, arrangements, obligations, or plans. As confirmed by Ludwig, it describes expectations or introduces a purpose.
Frequent in
News & Media
54%
Science
16%
Wiki
8%
Less common in
Formal & Business
6%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "is to be" is a versatile and grammatically sound construction used to express future actions, obligations, or intended purposes. As Ludwig AI confirms, it's a valid and useful phrase in written English. It is commonly found in news and media, as well as in scientific writing. When choosing to use "is to be", consider the context and desired level of formality. While appropriate for formal writing and instructions, simpler alternatives may be more suitable for casual conversation.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
will be
Simple future tense, focusing on a future state or event.
shall be
More formal future tense, often indicating a rule or regulation.
is going to be
Indicates a planned or predicted future event.
must be
Expresses necessity or strong obligation.
has to be
Indicates obligation or requirement.
needs to be
Highlights a requirement or necessity.
should be
Indicates a recommendation or expectation.
ought to be
Similar to 'should be', but slightly more formal.
is required to be
Emphasizes a mandatory condition or action.
is intended to be
Focuses on the purpose or planned outcome.
FAQs
How can I use "is to be" in a sentence?
Use "is to be" to indicate a plan, arrangement, or obligation. For instance, "The report "is to be" submitted by Friday" implies a formal requirement.
What's the difference between "is to be" and "will be"?
When is it appropriate to use "is to be"?
It's appropriate in formal writing, instructions, or when emphasizing a scheduled event or obligation. Using it in casual conversation might sound unnatural.
What alternatives can I use instead of "is to be"?
You can use alternatives like ""will be"", "is going to be", or "should be" depending on the nuance you want to convey.
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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested