Если уж ты всё равно идёшь в магазин, то купи хлеб.

Russian often uses the present tense for a planned or expected future action, especially with verbs of motion.

So ты идёшь в магазин can mean not only you are going to the store right now, but also you’re going to the store / you’re on your way to the store / you’re planning to go to the store.

In this sentence, the context makes the future meaning clear:

• Если уж ты всё равно идёшь в магазин... = If you’re going to the store anyway...

This is very natural in Russian.

Уж is a particle. It often does not have a direct one-word translation, but it adds emphasis or a certain tone.

In если уж..., it gives a sense like:

• if you’re going to do that anyway
• since you’re already doing that
• if that’s the case

So:

• Если ты всё равно идёшь в магазин... = neutral
• Если уж ты всё равно идёшь в магазин... = more emphatic, a bit like well, if you’re going anyway...

It can make the sentence sound more conversational.

Here всё равно means anyway.

So:

• ты всё равно идёшь в магазин = you’re going to the store anyway

Be careful: всё равно can also mean it makes no difference / I don’t care / all the same, depending on context.

For example:

• Мне всё равно. = I don’t mind / It makes no difference to me.

But in your sentence, it clearly means anyway.

Because в магазин shows motion toward the store.

With в:

• в + accusative = motion into / to
• в + prepositional = location in

So:

• идти в магазин = to go to the store
• быть в магазине = to be in the store

In your sentence:

• идёшь в магазин = you’re going to the store

То is a correlating word that often appears in Russian conditional sentences.

Pattern:

• Если ..., то ... = If ..., then ...

So:

• Если уж ты всё равно идёшь в магазин, то купи хлеб. = If you’re going to the store anyway, then buy bread.

In English, then is often omitted. In Russian, то is also sometimes omitted, but using it is very common and natural.

Compare:

• Если будет время, позвони.
• Если будет время, то позвони.

Both are correct. The version with то can sound a bit clearer or more structured.

This is about verb aspect.

• купить = perfective
• покупать = imperfective

The imperative купи is perfective and means:

• buy it
• make sure you get it
• a single completed action

That fits this sentence, because the speaker wants one concrete result:

• купи хлеб = buy bread

If you said покупай, it would sound different. It could suggest:

• repeated action
• general instruction
• encouragement to go ahead with the process

So here купи is the normal choice.

Both can be possible in Russian, but they are slightly different.

• купи хлеб = buy bread
• купи хлеба = buy some bread

Хлеб is the straightforward direct object in the accusative. Since хлеб is masculine inanimate, its accusative form looks the same as the nominative.

Хлеба is genitive and can have a partitive sense: some bread.

In everyday speech:

• купи хлеб sounds very normal and neutral
• купи хлеба also sounds natural, but it emphasizes some amount of bread

So the sentence with хлеб is completely standard.

Yes, ты could be omitted.

Russian often leaves out subject pronouns when they are clear from the verb form.

So both are possible:

• Если уж ты всё равно идёшь в магазин, то купи хлеб.
• Если уж всё равно идёшь в магазин, то купи хлеб.

Including ты can:

• make the sentence more direct
• add a little emphasis
• sound more personal

So here ты is not required for grammar, but it is natural in conversation.

It is informal, because it uses ты and the imperative купи addressed to someone in the ты form.

If you wanted a formal version, you would use вы:

• Если уж вы всё равно идёте в магазин, то купите хлеб.

So this sentence is something you might say to:

• a friend
• a family member
• a child
• someone you normally address as ты

Yes. Если уж... often suggests:

• since this is already the case
• if you’re going to do it anyway
• given that

It can sound slightly more persuasive or practical.

Compare:

• Если ты идёшь в магазин, купи хлеб.
  = If you’re going to the store, buy bread.
  Neutral condition.

• Если уж ты всё равно идёшь в магазин, купи хлеб.
  = If you’re going to the store anyway, buy bread.
  The speaker is using the fact that the person is already going there as a reason for the request.

So уж adds a small flavor of well, since that’s already happening...

Yes, Russian word order is flexible, but the original order is very natural.

The sentence is:

• Если уж ты всё равно идёшь в магазин, то купи хлеб.

This order presents the condition first, then the request.

You could move things around for emphasis, for example:

• Купи хлеб, если уж ты всё равно идёшь в магазин.

That is also correct. It puts the command first and the reason second.

Within the first clause, moving words can change emphasis:

• Если ты уж всё равно идёшь в магазин...
• Если ты идёшь в магазин всё равно... — much less natural here

So while Russian is flexible, the given version is a very idiomatic, smooth way to say it.

Literally, всё равно is something like all the same, but in this sentence you should understand the whole phrase idiomatically.

• ты всё равно идёшь в магазин = you’re going to the store anyway

Trying to translate each word too literally can be misleading. In real Russian, всё равно functions as a fixed expression with meanings like:

• anyway
• all the same
• it doesn’t matter

Here the best interpretation is simply anyway.

Yes. Магазин means store / shop in a broad sense.

Depending on context, it could be:

• a grocery store
• a convenience store
• a clothing store
• another type of shop

In this sentence, because the next part is купи хлеб, most people will naturally imagine a place where bread is sold, so probably a grocery store or similar food shop.

So English often translates it as the store or the shop, and context tells you what kind.