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
once it's
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "once it's" is correct and usable in written English.
You can use it to refer to a situation or condition that will occur after a specific event or time. Example: "Once it's finished, we can move on to the next phase of the project."
✓ 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
58 human-written examples
It doesn't work, once it's contaminated its contaminated".
Science
"Once it's recorded it's anyone's.
News & Media
Once it's full, it's full".
News & Media
Apply blusher once it's dry.
News & Media
Once, it's at the same time.
News & Media
And then, once it's ready — boom!
News & Media
A great device, once it's running.
News & Media
For once, it's our turn".
News & Media
Once it's up, it's over".
News & Media
Once it's polluted it's gone.
News & Media
Once it's passed, it's passed.
News & Media
Expert writing Tips
Best practice
Use "once it's" to clearly indicate a sequence of events where the first event must be completed before the second can occur. This helps create a sense of dependency and order in your writing.
Common error
Avoid using "once it's" when a simpler conjunction like "when" or "after" would suffice. Overusing it can make your writing sound repetitive or overly formal. For example, instead of "Once it's raining, we'll go inside", "When it rains, we'll go inside" is more concise.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "once it's" functions as a subordinating conjunction, introducing a dependent clause that specifies the condition for the main clause to occur. This use indicates a temporal or conditional relationship, as Ludwig examples demonstrate.
Frequent in
News & Media
35%
Wiki
33%
Science
17%
Less common in
Formal & Business
5%
Reference
5%
Encyclopedias
5%
Ludwig's WRAP-UP
In summary, "once it's" is a versatile and commonly used phrase that serves as a subordinating conjunction to establish a clear sequence of events or conditions. Ludwig AI confirms the phrase is grammatically correct and widely accepted. Its usage spans various contexts, from news and media to scientific writing, making it a valuable tool for expressing temporal or conditional relationships. When writing, use it to clearly define the order of events, avoiding overuse or replacing it with simpler conjunctions when appropriate. Consider alternatives like "after it is" or "when it is" for variety.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
after it has been
Focuses on the completion of an action before something else happens.
after it's been
Focuses on the duration of an action before something else can happen.
as soon as it is
Emphasizes the immediacy following the completion of an action.
the moment it is
Highlights the exact timing of something happening.
when it is
A more general way to indicate a point in time or a condition.
upon its
Emphasizes that something happens immediately after something else.
when it has
Similar to "when it is", focusing on a point in time or a condition being met.
following its
More formal and concise, suitable for professional contexts.
subsequent to its
A more formal phrase for following or after something.
on completion of
Highlights the finished state as the trigger for the following action.
FAQs
How can I use "once it's" in a sentence?
You can use "once it's" to indicate that something will happen after a specific condition is met or an action is completed. For example, "Once it's finished, we can start the next phase."
What phrases are similar to "once it's"?
Alternatives include "after it is", "when it is", or "as soon as it is", depending on the context.
Is it correct to say "once it is" instead of "once it's"?
Yes, "once it is" is the uncontracted form of "once it's" and is grammatically correct. The choice between the two often depends on the desired level of formality in your writing.
What is the difference between "once it's" and "if it's"?
"Once it's" implies a sequence where an event must occur before something else can happen, while "if it's" introduces a conditional situation that may or may not happen. "Once it's done, we celebrate" versus "If it's raining, we'll stay home."
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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested