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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
completed on
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "completed on" is correct and usable in written English.
It is typically used to indicate the date or time when a task or project was finished. Example: "The report was completed on March 15, 2023."
✓ 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
56 human-written examples
I really like the one I just completed on masculinity.
News & Media
Mating is completed on the wing.
Encyclopedias
An autopsy was completed on Saturday.
News & Media
The transaction was completed on Oct. 30.
News & Media
The deal was completed on Tuesday.
News & Media
The deal was completed on 11 March.
News & Media
It was announced in January; it was completed on Monday.
News & Media
The city says the repairs were completed on Sept. 26.
News & Media
Are any of the articles completed on the front page?
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
Questionnaire distributed by internet, to be completed on-line.
Questionnaires were completed on-line (Survey Monkey).
Science
Expert writing Tips
Best practice
When specifying a date with "completed on", ensure that the date format is consistent throughout your document. For instance, choose between "January 1, 2025" and "01/01/2025" and stick to it.
Common error
Avoid using "will be completed on" when referring to something that has already occurred. Instead, use "was completed on" for past events.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "completed on" functions as a temporal marker, indicating when an action or process reached its conclusion. It serves to specify the date or time of completion, providing a clear temporal reference point, as seen in Ludwig's examples.
Frequent in
News & Media
37%
Wiki
22%
Science
18%
Less common in
Formal & Business
7%
Encyclopedias
3%
Reference
0%
Ludwig's WRAP-UP
In summary, "completed on" is a frequently used and grammatically sound phrase that serves to specify the date or time when something was finished. As Ludwig AI confirms, the phrase is readily accepted and understandable in written English. Its usage spans across various contexts, including news, science, and general writing, and it maintains a neutral register. When using "completed on", ensure correct tense and consistent date formats for clarity. Alternative phrases like "finished on" or "finalized on" can also be used depending on the specific context. Remember that "completed on" specifies the exact completion date, while "finished by" indicates a deadline.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
finished on
Replaces "completed" with a more common synonym, maintaining the temporal context.
finalized on
Emphasizes the conclusive nature of the completion, suitable when highlighting the last step in a process.
concluded on
Similar to "finalized", but can imply a formal or official ending.
ended on
A simpler, more direct synonym for "completed", suitable for general contexts.
performed on
Focuses on the execution or undertaking that was finalized on a specific date.
executed on
Implies a formal or planned completion, often used in business or legal contexts.
effectuated on
A more formal and less common way to say "completed", suggesting the implementation or realization of something.
brought to a close on
A more verbose alternative that emphasizes the act of ending or finishing.
was fulfilled on
Highlights the achievement of a requirement or obligation by a specific date.
terminated on
Suggests a more abrupt or decisive ending, often used for contracts or projects.
FAQs
How can I use "completed on" in a sentence?
Use "completed on" to specify the date when something was finished. For example, "The project was completed on July 29, 2025."
What are some alternatives to "completed on"?
You can use alternatives like "finished on", "finalized on", or "concluded on" depending on the context.
Is it correct to say "will be completed on"?
Yes, "will be completed on" is grammatically correct when referring to a future event. For example, "The construction will be completed on December 31, 2025."
What's the difference between "completed on" and "finished by"?
"Completed on" specifies the exact date of completion, while "finished by" indicates a deadline or latest possible completion date. For instance, "The task was completed on Monday" versus "The task was finished by Monday".
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested