没关系 vs 不客气: which “it’s nothing” to use
Both 没关系 (méi guānxi) and 不客气 (bú kèqi) are polite replies meaning “it’s nothing,” but they are used in different situations: 没关系 answers an apology (“it’s ok / no problem”), while 不客气 answers a thank-you (“you’re welcome”). Mixing them up can cause confusion or rudeness in conversation.
In Chinese, both 没关系 (méi guānxi) and 不客气 (bú kèqi) function as formulaic replies that downplay an action or apology. The key distinction is the trigger: 没关系 is used when someone apologizes to you – it means “it’s ok” or “no harm done.” 不客气 is used when someone thanks you – it means “you’re welcome” or “don’t mention it.” Using the wrong one can sound odd: 不客气 after an apology dismisses the apology, while 没关系 after a thank-you implies the thanks were unnecessary. These are among the first fixed replies learners acquire, and mastering their contexts is essential for polite interaction.
When to use each
Use 没关系 when someone apologizes to you. It means “it doesn’t matter” or “no problem” and reassures the speaker that you are not upset. It is also used more broadly to say “it’s ok” in other non-apology contexts (e.g. when something minor goes wrong).
Use 不客气 when someone thanks you. It is the standard polite response to 谢谢 (xièxie) and means “you’re welcome” or “don’t mention it.” The literal meaning is “don’t be polite,” so it also appears in invitations or offers (e.g. “make yourself at home”).
In northern Mandarin, 不客气 can also be shortened to 甭客气 (béng kèqi), and is more informal. When responding to thanks, 不客气 is interchangeable with 不用谢 (búyòng xiè).
At a glance
| 没关系 | 不客气 | |
|---|---|---|
| Situation | Apology (someone says 对不起) | Thanks (someone says 谢谢) |
| Meaning | It’s ok / no problem | You’re welcome / don’t mention it |
| Appropriate response to | 对不起 (duìbuqǐ) | 谢谢 (xièxie) |
| Literal translation | “It doesn’t matter” | “Don’t be polite” |
| Register | Informal & polite | Informal & polite |
Examples
- 没关系A:对不起，我迟到了。B:没关系。A: duìbuqǐ, wǒ chídào le. B: méi guānxi.A: Sorry, I’m late. B: It’s ok.Correctly responding to an apology.
- 不客气A:谢谢你的帮助。B:不客气。A: xièxie nǐ de bāngzhù. B: bú kèqi.A: Thank you for your help. B: You’re welcome.Correctly responding to thanks.
- 不客气A:对不起，我忘了带书。B:不客气。A: duìbuqǐ, wǒ wàng le dài shū. B: bú kèqi.A: Sorry, I forgot to bring the book. B: You’re welcome.✗ Wrong – after an apology, use 没关系, not 不客气.
- 没关系A:我弄坏了你的笔。B:没关系，我还有一支。A: wǒ nòng huài le nǐ de bǐ. B: méi guānxi, wǒ hái yǒu yī zhī.A: I broke your pen. B: It’s ok, I have another one.Again, responding to an apology – 没关系 fits.
- 不客气A:非常感谢！B:不客气。A: fēicháng gǎnxiè! B: bú kèqi.A: Many thanks! B: You’re welcome.Standard reply to 谢谢.
Common mistakes
- Using 不客气 after an apology (e.g., after 对不起) – should use 没关系.
- Using 没关系 after someone thanks you (e.g., after 谢谢) – should use 不客气; 没关系 implies the thanks were unnecessary and can sound dismissive.
- Confusing 不客气 with 不用谢 (búyòng xiè) – both mean “you’re welcome” and are interchangeable in most contexts, but some learners overgeneralize 不客气 to apologies.
FAQ
- When do I use 没关系 vs 不客气?
- Use 没关系 to respond to an apology (e.g., 对不起 → 没关系). Use 不客气 to respond to thanks (e.g., 谢谢 → 不客气). They are not interchangeable.
- Can I use 没关系 to say “you’re welcome”?
- No. If someone thanks you, the correct reply is 不客气 (or 不用谢). Using 没关系 in that situation suggests the thanks were unnecessary and can confuse the listener.
- Can I use 不客气 to answer 对不起?
- No. After an apology, 不客气 sounds like you are brushing off the apology as if it were thanks. Always use 没关系 for apologies.
- What is the difference between 不客气 and 不用谢?
- Both mean “you’re welcome.” 不客气 is the most common in northern China; 不用谢 (literally “no need to thank”) is equally polite and used across regions. They are interchangeable in response to thanks, but neither should be used for apologies.