Mam trochę czasu po pracy.

In Polish, the subject pronoun is often omitted because the verb ending already shows who is doing the action.

• mam = I have
• The ending -m tells you it is 1st person singular

So Mam trochę czasu po pracy is completely natural.
You can say Ja mam trochę czasu po pracy, but ja adds emphasis, as in I have some time, maybe unlike someone else.

Mam is the 1st person singular present tense form of the verb mieć, meaning to have.

The present tense forms are:

• mam = I have
• masz = you have
• ma = he/she/it has
• mamy = we have
• macie = you all have
• mają = they have

So Mam trochę czasu literally means I have a bit of time.

Trochę means a little, a bit, or some, depending on context.

In this sentence, Mam trochę czasu means:

• I have a bit of time
• I have some time

It suggests not a lot, but enough.

A few comparisons:

• mam czas = I have time
• mam trochę czasu = I have a bit of time
• mam dużo czasu = I have a lot of time

Because trochę requires the genitive case.

The base form is:

• czas = time

But after quantity expressions like trochę, Polish usually uses the genitive:

• trochę czasu = a bit of time
• dużo czasu = a lot of time
• mało czasu = little time

So czasu is the genitive singular form of czas.

Yes. Mam czas po pracy is correct and natural.

The difference is:

• Mam czas po pracy = I have time after work
• Mam trochę czasu po pracy = I have a bit of time after work

Adding trochę makes it sound more limited or modest.

Po pracy means after work.

It is made from:

• po = after
• pracy = the locative form of praca = work

So literally it is after work.

This is a very common Polish expression, just like in English.

Because the preposition po usually takes the locative case when it means after in expressions like this.

The noun is:

• praca = work

Its locative singular form is:

• pracy

So:

• po pracy = after work
• po szkole = after school
• po obiedzie = after lunch

This is something you largely have to learn together with the preposition: po + locative in this kind of time expression.

It can feel a little broad, just like English work.

Po pracy usually means after work / after finishing work / after the workday.
Depending on context, it can refer to:

• your job
• your shift
• your working day
• the period when you are at work

So it is best understood idiomatically as after work.

Yes. Polish word order is fairly flexible.

All of these are possible:

• Mam trochę czasu po pracy.
• Po pracy mam trochę czasu.
• Trochę czasu mam po pracy.

The most neutral versions are:

• Mam trochę czasu po pracy
• Po pracy mam trochę czasu

Putting po pracy first can slightly emphasize after work.

In normal speech, Polish stress usually falls on the second-to-last syllable of each word:

• MAM
• TRO-chę
• CZA-su
• po PRA-cy

In the whole sentence, the strongest sentence stress depends on what you want to emphasize:

• Mam trochę czasu po pracy. = neutral
• Po pracy mam trochę czasu. = emphasis on after work
• Mam trochę czasu po pracy, ale nie przed pracą. = contrast

It is grammatically based on a singular noun:

• czas = time
• czasu = genitive singular

But in meaning, it works like an uncountable amount, just like English some time or a bit of time.

So you should think of it as an amount of time, not as separate countable units.

Yes, depending on what you mean.

Some common options are:

• Mam czas po pracy = I have time after work
• Mam trochę czasu po pracy = I have a bit of time after work
• Mam dużo czasu po pracy = I have a lot of time after work
• Mam mało czasu po pracy = I have little time after work
• Mam chwilę po pracy = I have a moment after work

Each one changes the nuance a little.

Yes, very natural.

A Polish speaker would easily say this in everyday conversation, especially when talking about availability, for example:

• Mam trochę czasu po pracy, możemy się spotkać.
• Mam trochę czasu po pracy, więc zadzwonię.

It sounds normal, clear, and conversational.