दरवाज़े पर ताला है।

Because Hindi nouns usually change to the oblique form before a postposition such as पर.

• Direct form: दरवाज़ा = door
• Oblique form: दरवाज़े
• So: दरवाज़े पर = on/at the door

This is a very common pattern with masculine nouns ending in -ा.

पर is a postposition meaning on, at, or upon, depending on context.

In दरवाज़े पर ताला है, it shows location: the lock is on the door / at the door. English may translate this in slightly different ways, but the basic idea is location.

Hindi often puts the location first and then the thing that exists there.

So this sentence is literally close to:

On the door, a lock is.

That is a normal Hindi way to express There is a lock on the door.

You could also say ताला दरवाज़े पर है, but that puts a bit more focus on the lock itself.

है is the present tense form of to be: is.

Here it works like is or there is in English.

• ताला है = there is a lock / it is a lock
• In this sentence: दरवाज़े पर ताला है = there is a lock on the door

Because ताला is singular, Hindi uses है. If it were plural, you would use हैं:

• दरवाज़े पर ताले हैं। = There are locks on the door.

It can suggest that, but literally it means There is a lock on the door.

In real life, that often implies the door is locked, but it is not exactly the same as directly saying The door is locked.

More explicit alternatives are:

• दरवाज़े पर ताला लगा है। = A lock has been put on the door / The door is locked with a padlock.
• दरवाज़ा बंद है। = The door is closed/shut.

So your sentence is natural, but it is slightly more literal.

Hindi does not normally use articles like a, an, or the.

So ताला can mean:

• a lock
• the lock

And दरवाज़े can mean:

• the door
• a door

The context tells you which one is meant.

ताला is masculine singular.

Gender matters in Hindi because adjectives and some verb forms can agree with the noun. In this specific sentence, है itself does not show masculine/feminine distinction, but if you used other words, gender could matter more.

For example:

• बड़ा ताला = a big lock
• बड़ी चाबी = a big key

So yes, gender is important in Hindi, even if it is not very visible in this exact sentence.

A few useful variations:

• दरवाज़े पर ताले हैं। = There are locks on the door.
• दरवाज़े पर ताला था। = There was a lock on the door.
• दरवाज़े पर ताला होगा। = There will be a lock on the door / There must be a lock on the door, depending on context.

The main changes are:

• ताला → ताले for plural
• है → हैं for plural
• है → था for past singular

Usually दरवाज़ा means door.

Depending on context, it can sometimes feel broader, like an entrance or doorway, but for gate, Hindi more commonly uses words like:

• गेट
• फाटक

So in this sentence, learners should mainly think of door.

The dot under ज़ is called a nukta. It shows that the sound is z, not plain j.

So:

• ज = roughly j
• ज़ = z

In practice, many people also write दरवाजे without the dot, and you will see both spellings. The nukta spelling is more precise for pronunciation, but both are common in everyday Hindi writing.