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's true
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that's true" is correct and usable in written English.
You can use it when you want to agree with someone or to emphasize the truth of a point. For example: "We should be careful when spending money - that's true."
✓ Grammatically correct
News & Media
Academia
Alternative expressions(8)
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
That's true.
Academia
"No, that's true, that's true.
News & Media
And that's true, that's true.
News & Media
Legally, that's true.
News & Media
No, that's true.
News & Media
Willis: That's true.
News & Media
"Now, that's true.
News & Media
Yes, that's true.
News & Media
Perhaps that's true.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
No doubt that was true.
News & Media
VILLANTE: That is true.
News & Media
Expert writing Tips
Best practice
Use "that's true" to provide quick affirmation and maintain conversational flow. It's particularly effective in dialogues or discussions where agreement is needed.
Common error
Avoid relying solely on "that's true" as your only means of agreement. Vary your responses with alternatives like "exactly", "I agree", or more elaborate confirmations to make your communication more engaging and dynamic.
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that's true" serves as an affirmative interjection, functioning to express agreement or confirmation with a preceding statement. Ludwig AI validates this usage, highlighting its role in acknowledging the veracity of a claim.
Frequent in
News & Media
55%
Academia
33%
Wiki
1%
Less common in
Science
4%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "that's true" is a common and grammatically correct expression used to indicate agreement or confirmation. As Ludwig AI confirms, it is widely applicable across various contexts, predominantly in News & Media and Academia. While versatile, varying your responses with alternatives ensures more engaging communication. Its register is generally neutral, leaning toward informal, making it suitable for both spoken and written dialogues. Remember to use it judiciously, avoiding overuse and opting for more formal alternatives when appropriate.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that's right
A very common and almost interchangeable alternative, maintaining the same level of formality.
that is correct
Replaces 'true' with 'correct', offering a slightly more formal tone.
exactly
Expresses complete agreement with the previous statement.
you're right
Shifts the focus to the person making the statement, directly acknowledging their correctness.
absolutely
Indicates strong agreement and conviction.
that's a fact
Emphasizes the undeniable nature of the statement, adding a tone of certainty.
that's spot on
An informal expression indicating perfect accuracy.
I agree
Directly states agreement, shifting the focus to the speaker's perspective.
indeed
A more formal and concise affirmation.
you have a point
Acknowledges the validity of someone's argument or statement.
FAQs
How can I use "that's true" in a sentence?
"That's true" is commonly used to express agreement or acknowledgment of a statement. For example, "The weather has been quite unpredictable lately. That's true, it rained heavily yesterday."
What are some alternatives to saying "that's true"?
You can use alternatives like "that is correct", "that's right", or "exactly" depending on the context.
Is it appropriate to use "that's true" in formal writing?
While "that's true" is generally acceptable, more formal alternatives such as "that is correct" or "indeed" may be more suitable for academic or professional writing.
What's the difference between "that's true" and "it's true"?
While both phrases express truth, "that's true" typically refers to a specific statement made, while "it's true" can refer to a general situation or fact. For instance, "He said he was tired, that's true." versus "It's true that the Earth revolves around the sun."
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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
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested