Calm down vs Relax

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

Calm down

Top 1,000 (very common)

Relax

Top 1,000 (very common)A1verb
 Calm downRelax
Pronunciation🇬🇧 //kɑːm daʊn//🇺🇸 //kɑm daʊn//🇬🇧 /["/rɪˈlæks/","/rɪˈlæksɪz/","/rɪˈlækst/","/rɪˈlæksɪŋ/"]/🇺🇸 /["/rɪˈlæks/","/rɪˈlæksɪz/","/rɪˈlækst/","/rɪˈlæksɪŋ/"]/
MeaningTo relax or stop being upset.To make yourself feel calm and not stressed.
ExampleYou need to calm down before we continue this discussion.After a long day at work, I like to relax on the couch with a good book.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR level-A1
Part of speechverb
Collocationscalm down the situation, calm down emotions, calm down quicklycompletely, fully, totally, begin to, try to, learn to, against, into, on, lie back and relax, sit back and relax, relax and enjoy something/​yourself, completely, fully, totally, begin to, try to, learn to, against, into, on, lie back and relax, sit back and relax, relax and enjoy something/​yourself, completely, fully, totally, begin to, try to, learn to, against, into, on, lie back and relax, sit back and relax, relax and enjoy something/​yourself
Antonymsagitate, excite, disturbstress, tense, worry
Common mistakes'Calm down' can be used for things instead of people, which is incorrect., Confusing 'calm down' with 'cool off', which has a slightly different meaning., Using 'calm down' too aggressively can make someone feel worse.'Relax' is sometimes confused with 'release' as if both mean the same thing., Learners may forget to use an object, saying just 'I relax' instead of 'I relax myself'., Some might use 'relax' inappropriately with a negative tone, which can sound confusing.
Usage notesUse in situations where someone is anxious or angry. It’s neutral in tone, appropriate for friends, family, or colleagues, but can seem dismissive if not delivered carefully.Use 'relax' when talking about making oneself calm. It's suitable for most contexts, but avoid using it in very formal occasions.

See it in real clips

Calm down
Relax

Frequently asked questions: Calm down vs Relax

What's the difference between Calm down and Relax?

Calm down: To relax or stop being upset. Relax: To make yourself feel calm and not stressed.

Can you show an example of each?

Calm down: You need to calm down before we continue this discussion. Relax: After a long day at work, I like to relax on the couch with a good book.

Can I use Calm down and Relax interchangeably?

Not always. Calm down and Relax 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