हम कितने बजे मिलेंगे?

Both are correct, but they ask slightly different things:

• हम कब मिलेंगे? = When will we meet?
  This is broader. The answer could be a day, date, or general time.
• हम कितने बजे मिलेंगे? = At what time will we meet?
  This specifically asks for the clock time.

So कितने बजे is used when you want a time such as तीन बजे (at three o’clock) or साढ़े पाँच बजे (at 5:30).

कितने बजे literally means something like how many o’clock.

Breakdown:

• कितने = how many / which number
• बजे = from the verb बजना, which is used for clocks striking or showing a time

In natural English, you would not translate it literally. You would simply say what time or at what time.

This is the normal Hindi way to ask for clock time:

• कितने बजे हैं? = What time is it?
• तुम कितने बजे आओगे? = What time will you come?

Hindi usually uses कितने बजे to ask the time shown by the clock. Even though English says what time, Hindi often uses the equivalent of how many here.

You may also hear:

• किस समय = at what time

That is a bit more formal or bookish.

So:

• हम कितने बजे मिलेंगे? = very natural, everyday Hindi
• हम किस समय मिलेंगे? = also correct, but more formal

मिलेंगे is the future tense form of मिलना (to meet).

Here it means will meet.

Breakdown:

• मिल- = verb stem from मिलना
• -ेंगे = future ending used with we or they in many contexts

So:

• हम मिलेंगे = we will meet

In this sentence:

• हम कितने बजे मिलेंगे? = At what time will we meet?

The ending -ेंगे matches the subject हम (we) in the future tense.

Some useful comparisons:

• मैं मिलूँगा / मिलूँगी = I will meet
• तुम मिलोगे / मिलोगी = you will meet
• हम मिलेंगे = we will meet
• वे मिलेंगे / मिलेंगी = they will meet

So -ेंगे is a normal future ending for we.

Note that in actual usage, some future forms also reflect gender in other persons, but with हम, मिलेंगे is the standard form you will commonly see and hear.

Yes, Hindi word order is somewhat flexible, but this version is the most neutral and natural.

Basic structure here:

• हम = subject
• कितने बजे = time question phrase
• मिलेंगे = verb

So it is: We + at what time + will meet?

You may also hear:

• हम मिलेंगे कितने बजे?

But that can sound more marked, conversational, or emphatic depending on context. For learners, हम कितने बजे मिलेंगे? is the safest standard order.

Yes, in English we say at what time, but Hindi usually does not need a separate word equivalent to at here.

So:

• हम तीन बजे मिलेंगे। = We will meet at three o’clock.
• हम कितने बजे मिलेंगे? = At what time will we meet?

Using पर here would usually sound unnatural in standard Hindi for clock time.

In standard Hindi, yes, हम normally means we.

A learner might hear that in some dialects or regional speech, हम can be used for I, but that is not standard modern Hindi in most teaching contexts.

So in this sentence, you should understand:

• हम = we

It can do both, depending on the sentence.

In हम कितने बजे मिलेंगे?, it naturally means we will meet each other.

But मिलना can also be used with से to mean meet with / meet someone:

• मैं उससे मिला। = I met him/her.
• हम तुमसे कल मिलेंगे। = We will meet you tomorrow.

So in your sentence, because no other person is mentioned, the meaning is simply When will we meet?

You would normally answer with a time expression plus the future verb, or sometimes just the time if the context is clear.

Examples:

• हम तीन बजे मिलेंगे। = We will meet at three o’clock.
• हम शाम को छह बजे मिलेंगे। = We will meet at six in the evening.
• तीन बजे। = At three.
  This short answer is very common in conversation.

बजे is pronounced roughly like buh-JAY.

It comes from the verb बजना, which is used for clocks, bells, alarms, and similar things sounding or striking.

Examples:

• एक बजा है। = It is one o’clock.
• दो बजे हैं। = It is two o’clock.

In time expressions like तीन बजे or कितने बजे, you can think of बजे as part of the standard way Hindi tells clock time.

Yes, absolutely.

• हम कब मिलेंगे? = When will we meet?
• हम कितने बजे मिलेंगे? = At what time will we meet?

Use कब if you want a general when.
Use कितने बजे if you specifically want the hour/time on the clock.

So the longer version is more precise.