It doesn't matter vs That shit don't matter

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

It doesn't matter

Top 1,000 (very common)

That shit don't matter

InformalTop 3,000 (common)
Most formal: It doesn't matterMost common: It doesn't matter
 It doesn't matterThat shit don't matter
Pronunciation🇬🇧 //ɪt ˈdʌzənt ˈmætə//🇺🇸 //ɪt ˈdʌzənt ˈmætər//🇬🇧 //ðæt ʃɪt doʊnt ˈmætər//🇺🇸 //ðæt ʃɪt doʊnt ˈmætər//
MeaningIt is not important.That is not important.
ExampleI forgot my book, but that’s okay; it doesn’t matter.I forgot my keys, but that shit don't matter, we can still get in.
RegisterNeutralInformal
How commonTop 1,000 (very common)Top 3,000 (common)
Collocationsdoesn't matter what, it doesn't matter if, doesn't matter anymorethat shit don't matter, it doesn't matter, no one cares, who gives a shit, it's not a big deal
Antonymsit matters, is important-
Common mistakesConfused with 'it matters', Using in overly formal situations, Incorrectly applying in serious contextsUsing it in formal settings like business meetings., Incorrectly saying 'That shit doesn't matter' instead of 'don't' for emphasis., Adding unnecessary words, making it overly complex.
Usage notesUsed to indicate that something is not significant or does not affect the outcome. Appropriate in both casual and formal contexts, but can sound dismissive if overused.Used in casual conversations to dismiss something as unimportant. Not suitable for formal contexts.

See it in real clips

It doesn't matter
That shit don't matter

Frequently asked questions: It doesn't matter vs That shit don't matter

What's the difference between It doesn't matter and That shit don't matter?

It doesn't matter: It is not important. That shit don't matter: That is not important.

Which is more formal: It doesn't matter and That shit don't matter?

It doesn't matter is the most formal of these.

Which is more common: It doesn't matter and That shit don't matter?

It doesn't matter is the most common in everyday English.

Can you show an example of each?

It doesn't matter: I forgot my book, but that’s okay; it doesn’t matter. That shit don't matter: I forgot my keys, but that shit don't matter, we can still get in.

Can I use It doesn't matter and That shit don't matter interchangeably?

Not always. It doesn't matter and That shit don't matter 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.