That's good vs That's perfect

When to use each in English, with meaning, register, and examples.

That's good

High-frequency chunk

That's perfect

Beyond 10,000 (less common)
Most common: That's good
 That's goodThat's perfect
Pronunciation🇬🇧 //ðæts ɡʊd//🇺🇸 //ðæts ɡʊd//🇬🇧 //ðæts ˈpɜːfɪkt//🇺🇸 //ðæts ˈpɜrfɪkt//
MeaningThis is positive or satisfactory.It is exactly what I wanted.
ExampleWhen she finished speaking, everyone said, 'That's good!'Your presentation was amazing, that's perfect!
RegisterNeutralNeutral
How commonHigh-frequency chunkBeyond 10,000 (less common)
CollocationsThat's good news, That's good to hear, That's good enough, That's good advice, That's good valuethat's perfect timing, that's perfect for me, that's perfect example
Antonyms-that's awful, that's unacceptable
Common mistakesUsing it in overly formal situations., Confusing it with sarcasm when tone is neutral., Omitting the subject in responses.Using it sarcastically without clear context., Mispronouncing the phrase., Confusing with 'that's good' in intensity.
Usage notesUse 'That's good' to express approval or agreement. Common in everyday conversations; consider context for appropriateness.Use when you agree or are pleased with something. Suitable in most contexts; avoid in very formal settings.

See it in real clips

That's good
That's perfect

Frequently asked questions: That's good vs That's perfect

What's the difference between That's good and That's perfect?

That's good: This is positive or satisfactory. That's perfect: It is exactly what I wanted.

Which is more common: That's good and That's perfect?

That's good is the most common in everyday English.

Can you show an example of each?

That's good: When she finished speaking, everyone said, 'That's good!' That's perfect: Your presentation was amazing, that's perfect!

Can I use That's good and That's perfect interchangeably?

Not always. That's good and That's perfect are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

Related comparisons