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 so true
Grammar usage guide and real-world examplesUSAGE SUMMARY
"That's so true" is a perfectly acceptable phrase in written English.
You can use it when someone says something that you think is correct or to agree with a statement they make. For example: Person 1: "I think it's important to always strive to be kind and compassionate." Person 2: "That's so true."
✓ Grammatically correct
News & Media
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
38 human-written examples
I thought, God, that's so true!
News & Media
He transcends the "yes, that's so true, I agree!" into the "oh ew, no I'm not sure where this going …".
News & Media
Of course, not everybody's an artist – that's so true – however pretty much everyone benefits from exposure to positive self expression, particularly when the content is driven by harsh, often destructive, unexpressed emotion, often born of historic trauma.
News & Media
Bernard: That's so true.
News & Media
A could-be (normally is) oxymoron that's so true in this case you might actually start to feel a little lonely.
News & Media
"That's so true -- I would miss our little farmer's market way too much if we left Oakland".
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
22 human-written examples
That was so true that the first of Newcomen's steam engines wasn't built in a tin mine, but in coal works near Dudley.
News & Media
OTHER PERSON: That is so true!
News & Media
"That is so true," the lawyer says, with emotion.
News & Media
I told her that it depended on the number of times I thought, "That is so true".
News & Media
"It's no use," he said, shaking his head, and that was so true back in those days.
News & Media
Expert writing Tips
Best practice
Use "that's so true" to express genuine agreement and connection with the speaker, creating a positive and affirming conversational environment.
Common error
Avoid using "that's so true" excessively in a conversation, as it can come across as insincere or lacking original thought. Vary your responses with other expressions of agreement to maintain engagement.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "that's so true" is as an interjection or response phrase, used to express agreement or validation of a preceding statement. As Ludwig AI points out, it's a way to show that you find something accurate or relatable.
Frequent in
News & Media
69%
Wiki
7%
Formal & Business
6%
Less common in
Science
6%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "that's so true" is a prevalent and grammatically sound phrase used to express strong agreement. As Ludwig AI confirms, it is suitable for various informal contexts, particularly in news and media. While highly frequent, it's essential to use it judiciously to maintain sincerity and avoid overuse. Alternatives like "that's very true" or "I couldn't agree more" offer greater formality when required. By understanding its function, purpose, and register, one can effectively integrate "that's so true" into everyday conversation and writing, enhancing communication while maintaining authenticity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that's very true
Replaces "so" with "very", slightly altering the intensity of agreement.
that's absolutely right
Uses "absolutely right" to convey a stronger sense of agreement and certainty.
that's spot on
Employs a more informal idiom to indicate something is perfectly accurate.
that rings true
Indicates the statement resonates with authenticity and feels genuine.
i couldn't agree more
Expresses complete agreement by stating an inability to agree any further.
you're not wrong
Acknowledges the validity of the statement, albeit with a slightly understated tone.
that's the truth
Affirms the statement as being factual and accurate.
i feel the same way
Indicates shared sentiment or opinion, aligning with the speaker's statement.
i concur
A more formal way of expressing agreement.
precisely
Highlights the exactness and accuracy of the statement.
FAQs
What does "that's so true" mean?
The phrase "that's so true" is an expression used to convey strong agreement with a statement or sentiment that someone else has expressed. It indicates that you find the statement to be accurate, valid, or relatable.
What are some alternatives to saying "that's so true"?
Alternatives include phrases like "that's very true", "that's absolutely right", or "I couldn't agree more", depending on the context and the level of emphasis you want to convey.
Is it appropriate to use "that's so true" in formal writing?
While "that's so true" is perfectly acceptable in informal conversation, it is generally too casual for formal writing. In more formal contexts, consider using more sophisticated expressions of agreement, such as "that is indeed accurate" or "I concur with that assessment".
How can I use "that's so true" effectively in a conversation?
Use "that's so true" to show empathy and understanding, reinforcing the speaker's point and building rapport. However, avoid overusing it to maintain the authenticity and impact of your agreement.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested