När maten är klar, ropar jag på dig.

Because Swedish has V2 word order in main clauses: the finite verb must come in the second position.

Here, the sentence begins with the time clause När maten är klar. That whole clause counts as the first element, so the verb in the main clause has to come next:

• När maten är klar, ropar jag på dig.

If you started directly with the subject, you would say:

• Jag ropar på dig när maten är klar.

Both are correct, but when the sentence starts with När maten är klar, the main clause changes to ropar jag.

Because this is a subordinate clause, not a question.

In Swedish, normal word order in a subordinate clause is:

• subject + verb
• maten är

So:

• När maten är klar = when the food is ready

Compare that with a question:

• När är maten klar? = When is the food ready?

That version is a direct question, so the word order is different.

Here, när means when and introduces a time clause.

So:

• När maten är klar = When the food is ready

It tells you at what time the action in the main clause happens.

A learner might confuse när with om. In Swedish:

• när is used when something is expected to happen
• om can mean if, or whether

So in this sentence, när is right because the food is expected to become ready.

Swedish often uses the present tense for future meaning when the context already makes the timing clear.

So:

• När maten är klar, ropar jag på dig.

can naturally mean:

• When the food is ready, I’ll call you.

This is very common in Swedish. English often prefers will, but Swedish frequently just uses the present tense in time clauses and even in the main clause if the future meaning is obvious.

Because klar has to agree with the noun it describes.

The noun here is maten (the food), which is a common gender singular noun. With common gender singular nouns, the adjective form is often:

• klar

Compare:

• maten är klar = the food is ready
• huset är klart = the house is ready
• grönsakerna är klara = the vegetables are ready

So klar matches maten.

Maten means the food, while mat means food in a more general sense.

In this sentence, the speaker is talking about a specific meal or the food that is being prepared right now, so Swedish normally uses the definite form:

• maten = the food

If you said När mat är klar, it would sound unnatural in ordinary Swedish.

Ropa på någon means to call out to someone, call for someone, or shout for someone.

So ropar jag på dig does not mean a phone call. It means something more like:

• I call out to you
• I call for you
• I shout for you

In this context, it suggests the speaker will get your attention when the food is ready, probably from another room or nearby.

Because ropa på is a common Swedish expression with its own pattern.

Many Swedish verbs combine with specific prepositions, and they do not always match English exactly. Here:

• ropa = shout / call out
• ropa på någon = call out to someone / call for someone

So the på is just part of the natural verb pattern. It is something you mostly need to learn together with the verb.

The comma after klar helps show the boundary between the subordinate clause and the main clause:

• När maten är klar, ropar jag på dig.

In modern Swedish, commas in sentences like this are often optional, especially in shorter sentences. So you may also see:

• När maten är klar ropar jag på dig.

Both are understandable. The comma is mainly there to make the sentence easier to read.

Yes, absolutely.

That version is also correct:

• Jag ropar på dig när maten är klar.

The difference is mainly word order and emphasis.

• När maten är klar, ropar jag på dig.
  This puts more focus on the time: when the food is ready
• Jag ropar på dig när maten är klar.
  This starts with I, so it feels a bit more neutral

Both are natural Swedish.