Buongiorno, come sta?

It can mean both.

In Italian, buongiorno is often used as a daytime greeting, so depending on context it can feel like:

• good morning
• good day
• hello

So in real conversation, Italians often use buongiorno simply as a polite way to greet someone during the day, not just in the early morning.

Use buongiorno when you want to sound more polite, neutral, or professional.

A native English speaker can think of it like this:

• Ciao = informal, like hi or bye
• Buongiorno = more polite, like good morning / hello

You would commonly use buongiorno with:

• strangers
• shop staff
• older people
• teachers
• clients
• people you want to address respectfully

You would more often use ciao with:

• friends
• family
• classmates
• people your age you know well

Come sta? is formal.

It is the polite way to say How are you? to one person.

Italian often makes a distinction between:

• come stai? = informal singular
• come sta? = formal singular

So if you are speaking to someone you do not know well, or in a respectful situation, come sta? is a very natural choice.

Because this sentence uses the formal form of you.

In Italian:

• tu = informal you
• Lei = formal you

When you use formal Lei, the verb is conjugated like he/she in the third person singular.

So:

• Come stai? = How are you? (informal, with tu)
• Come sta? = How are you? (formal, with Lei)

That is why you see sta, not stai.

Sta comes from the verb stare.

In this expression, stare is used to ask how someone is feeling or doing.

A few useful forms are:

• io sto = I am / I’m doing
• tu stai = you are / you’re doing
• Lei sta = you are / you’re doing (formal)
• lui/lei sta = he/she is

So come sta? literally uses the formal Lei form of stare.

Because Italian often leaves subject pronouns out when they are already clear from the verb.

In English, you must say How are you?
In Italian, the verb ending already tells you who the subject is.

So:

• stai already suggests tu
• sta can match Lei in a formal question

That means Come sta? is complete even without writing Lei.

You could say Come sta Lei?, but that is less neutral and usually used only for emphasis, contrast, or extra clarity.

A simple pronunciation guide is:

buon-GJOR-no, KO-me sta?

A few tips:

• buon sounds roughly like bwon
• giorno has a soft j-like sound at the start of gior-
• come is KO-me, not like English comb
• sta is short and clear: sta

A more approximate English-style version would be:

bwon-JOR-no, KO-me sta?

The stress is mainly on:

• gior in buongiorno
• co in come

The comma separates the greeting from the question.

So the sentence has two parts:

• Buongiorno = greeting
• come sta? = question

In English, this is similar to:

Good morning, how are you?

The comma helps show a natural pause between the two parts.

Yes. Normally, in Italian, buongiorno is not capitalized unless it begins the sentence.

So both of these are correct depending on position:

• Buongiorno, come sta?
• Le dico buongiorno ogni mattina.

Italian does not capitalize greetings as much as English sometimes does. Capitalization usually follows normal sentence rules.

Yes, you could, and it is very common.

Come va? also means How’s it going? / How are things?

Compared with come sta?:

• come sta? sounds a bit more directly personal and polite
• come va? can sound a little broader and sometimes slightly less formal, though still perfectly polite in many situations

Both are useful.
If you want a clearly formal textbook-safe option, Buongiorno, come sta? is excellent.

Common answers include:

• Bene, grazie. = Well, thank you.
• Molto bene, grazie. = Very well, thank you.
• Abbastanza bene. = Quite well.
• Non c’è male. = Not bad.
• Così così. = So-so.
• Sto bene, grazie. E Lei? = I’m well, thank you. And you?

If the conversation is formal, it is very natural to reply with E Lei? to return the question politely.

Yes, absolutely.

Buongiorno, come sta? is a natural and standard polite greeting. It is especially common in situations like:

• entering a shop
• speaking to a receptionist
• greeting a customer
• talking to an older person
• meeting someone in a formal setting

In very casual everyday life, people may prefer less formal greetings such as Ciao, come stai?, but Buongiorno, come sta? is real, useful, and very idiomatic.