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
that was useful
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that was useful" is correct and usable in written English.
You can use it to express appreciation for information or assistance that has been helpful in a particular context. Example: "After reviewing the tutorial, I can confidently say that was useful for my understanding of the topic."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
52 human-written examples
At Christmas they did party bags - that was useful.
News & Media
But it gave me a distance that was useful.
News & Media
The environment of a stripped factory had a certain funky neutrality that was useful".
News & Media
You then get in to the question of: 'Did he actually tell them anything that was useful?
News & Media
("Absolutely no background in statistics that was useful," Piotte told me ruefully. "Two guys, absolutely no clue").
News & Media
The 2C number began life in 1995 as a round number that was useful in political negotiations.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
8 human-written examples
But something that's useful won't.
News & Media
"That provides access in a way that is useful".
News & Media
"Nothing that's useful," Conine said with a smile.
News & Media
Critically, we have to focus on information that is useful.
News & Media
Some products that are useful also make a statement.
News & Media
Expert writing Tips
Best practice
Use "that was useful" to express gratitude or acknowledge the value of information, advice, or assistance received. It's a direct and clear way to show appreciation.
Common error
While "that was useful" is generally acceptable, avoid overusing it in highly formal or academic writing. Consider more sophisticated alternatives like "that proved beneficial" or "that was instrumental" to maintain a professional tone.
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that was useful" functions as a subjective assessment, indicating the speaker's judgment about the utility or benefit derived from something. As Ludwig indicates, this expression is common and usable in written English.
Frequent in
News & Media
46%
Science
27%
Formal & Business
13%
Less common in
Wiki
3%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "that was useful" is a grammatically sound and frequently employed expression used to convey appreciation or recognition of something beneficial. Ludwig confirms its correctness and widespread usability. While versatile, it's important to consider the context and opt for more formal alternatives in academic or highly professional settings. The phrase sees frequent usage across "News & Media", "Science", and "Formal & Business" domains, confirming its broad applicability. Remember to use it to clearly and directly express the value you perceive in something.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that proved helpful
Replaces "useful" with "helpful", emphasizing the assistance provided.
that turned out to be helpful
Adds a temporal aspect, indicating usefulness was realized after the fact.
that was of assistance
Replaces "useful" with a more formal phrase, "of assistance".
that was advantageous
Replaces "useful" with "advantageous", highlighting the benefit gained.
that offered some benefit
Highlights the positive outcome or advantage gained.
that served its purpose
Focuses on the fulfillment of a specific goal or need.
that came in handy
Uses a more informal idiom to express usefulness.
that contributed positively
Focuses on the contribution to a favorable result.
it was conducive
Emphasizes the facilitative nature, contributing towards a specific outcome.
that had some value
Emphasizes the worth or importance of something.
FAQs
How can I rephrase "that was useful" to sound more formal?
For a more formal tone, consider using phrases such as "that was beneficial", "that was advantageous", or "that proved helpful". These alternatives convey a similar meaning but are better suited for professional or academic contexts.
What is a more informal way to say "that was useful"?
In informal settings, you can use phrases like "that came in handy" or "that helped a lot". These expressions are more casual and appropriate for everyday conversations.
Is "that was useful" grammatically correct?
Yes, "that was useful" is grammatically correct. It follows the standard subject-verb-complement structure and is widely accepted in both spoken and written English.
What's the difference between "that was useful" and "that is useful"?
"That was useful" refers to something that provided value or assistance in the past. "That is useful" refers to something that is currently providing or has the potential to provide value or assistance.
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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
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested