Ask any group of Spanish students which words give them the most trouble, and por and para will come up almost immediately. The problem is easy to state: both words often translate as for in English. But Spanish treats them as two completely different prepositions, each with its own set of jobs.
The good news is that those jobs are predictable. Once you know what each preposition covers, choosing between them stops being a guessing game. This guide walks through every core use with plenty of examples, then covers fixed expressions, the difference between por qué and para qué, and a quick decision guide you can review before your next conversation.
Why English speakers struggle
English asks the word for to do a lot of work. We say this gift is for you, I stayed for a week, I paid twenty dollars for it, and the shop is closed for the holiday. Those are four different ideas, and Spanish assigns them to two different prepositions.
Here is the big picture. Para generally points forward, toward a recipient, a destination, a goal, or a deadline. Por generally points backward or around, toward a cause, an exchange, a duration, or a rate. If you keep that contrast in mind, most of the specific rules below will feel logical rather than arbitrary.
Both words belong to the larger family of Spanish prepositions, which you can review in our complete list of Spanish prepositions. And if you ever want to go deeper, the RAE dictionary entries for por and para list many more senses than most learners will ever need. The core framework below covers the vast majority of everyday situations.
When to use para
Destination or recipient
Use para to say who or what something is destined for:
El flan es para la cena. (The flan is for dinner.)
Estas verduras son para la sopa. (These vegetables are for the soup.)
Marcos compra flores para la Sra. Ríos. (Marcos buys flowers for Sra. Ríos.)
Este regalo es para ti. (This gift is for you.)
You will hear this use constantly at restaurants when people order: Y, para mí, la sopa de verduras. (And, for me, the vegetable soup.)
One note on pronouns. Yo and tú can't follow a preposition; they switch to mí and ti (para mí, para ti). Every other person keeps its usual form:
¿Esta galleta es para mí? (Is this cookie for me?)
La Sra. Ríos tiene una canción nueva para nosotros. (Sra. Ríos has a new song for us.)
Direction
Para can also indicate movement toward a place:
Lucía va para el mercado cada sábado. (Lucía goes to the market every Saturday.)
Marcos va para la escuela de música cada tarde. (Marcos goes to the music school every afternoon.)
Both sentences also work with a (Lucía va al mercado cada sábado), and a is in fact the more common choice here. Directional para still shows up in conversation often enough that you'll want to recognize it.
Purpose or goal (in order to)
This is one of the most useful patterns in Spanish. When para means in order to, it is usually followed by a verb in the infinitive:
Lucía ahorra para comprar un piano. (Lucía saves money in order to buy a piano.)
Tomamos clases con la Sra. Ríos para aprender a tocar la guitarra. (We take classes with Sra. Ríos in order to learn to play the guitar.)
Voy al mercado para comprar fruta. (I go to the market [in order] to buy fruit.)
Fui al centro para recoger un paquete. (I went downtown in order to pick up a package.)
Here is a reliable test: if you can insert in order to into the English sentence, you need para.
Deadlines
Use para for a date or time when something is due:
Necesito la receta para el sábado. (I need the recipe by Saturday.)
El ensayo de historia es para el viernes. (The history essay is due Friday.)
Tengo que comprar los regalos para el martes. (I have to buy the presents by Tuesday.)
Notice that English often uses by here, not for. That mismatch trips up a lot of students, so it is worth memorizing this use separately.
When to use por
Time periods
Use por for the duration of a time interval:
Marcos practica por dos horas cada día. (Marcos practices for two hours every day.)
Estoy en Madrid por cinco días. (I am in Madrid for five days.)
Lucía está en Valencia por dos semanas. (Lucía is in Valencia for two weeks.)
With durations like these, Spanish often drops the preposition entirely: Marcos practica dos horas cada día. Both versions are correct, but I'm some dialects dropping it is the standard.
Por also shows up in time-of-day expressions like por la mañana and por la noche. If you want the details on those, we cover them in Is it por la mañana, en la mañana, or de la mañana?
Reason or cause (because of)
When por means because of, it is usually followed by a noun:
El mercado está cerrado por la lluvia. (The market is closed because of the rain.)
No hay clase de piano hoy por un problema eléctrico. (There is no piano class today because of an electrical problem.)
La escuela de música está cerrada por las fiestas. (The music school is closed for the holidays.)
Pablo llega tarde por el tráfico. (Pablo arrives late because of the traffic.)
This is also why Spanish says gracias por. When you thank someone, you are naming the cause of your gratitude: Gracias por la comida. (Thanks for the meal.)
Exchange
Use por when one thing is traded for another, including money:
Compré esta guitarra por doscientos euros. (I bought this guitar for two hundred euros.)
Lucía cambió su bicicleta vieja por un teclado usado. (Lucía traded her old bicycle for a used keyboard.)
Le vendí mi horno viejo a Marcos por cincuenta dólares. (I sold Marcos my old oven for fifty dollars.)
As the word per
Por translates the English per in rates and frequencies:
Mi vecino va al mercado cuatro veces por semana. (My neighbor goes to the market four times per week.)
Marcos toma dos clases de piano por semana. (Marcos takes two piano lessons per week.)
El tren va a doscientos kilómetros por hora. (The train goes at two hundred kilometers per hour.)
Por qué vs. para qué
The same logic applies to questions. ¿Por qué? asks for a reason or cause, so it means why. ¿Para qué? asks for a purpose or goal, so it means what for.
¿Por qué estudias español? (Why do you study Spanish?)
Estudio español por mi trabajo. (I study Spanish because of my job.)
¿Para qué estudias español? (What do you study Spanish for?)
Estudio español para hablar con mis clientes. (I study Spanish in order to speak with my clients.)
Both questions can receive similar answers, but por qué looks for the cause behind the action, while para qué looks for the goal in front of it. Notice how the answers follow the pattern we saw above: por plus a noun for the cause, and para plus an infinitive for the goal.
Common fixed expressions
Some combinations of por or para plus another word are set phrases. You do not need to analyze them. Just memorize them as vocabulary.
Frequent expressions with por:
por favor (please)
por ejemplo (for example)
por fin (finally)
por supuesto (of course)
por lo menos (at least)
por eso (that's why, for that reason)
por cierto (by the way)
por si acaso (just in case)
por ahora (for now)
Frequent expressions with para:
para siempre (forever)
para nada (not at all)
para variar (for a change)
A few of these in action:
Por fin terminé el libro. (I finally finished the book.)
Te voy a querer para siempre. (I am going to love you forever.)
No me gusta para nada. (I don't like it at all.)
Quick decision guide
When you are mid-sentence and need to choose, run through this list.
Use para for:
a recipient or destination (the gift is for you, the flan is for dinner)
direction toward a place (though a is more common here)
a purpose or goal, meaning in order to, usually followed by an infinitive
a deadline (by Wednesday, due Monday)
Use por for:
a period of time (and remember it can often be omitted, and it's very common to do so)
a reason or cause, meaning because of, usually followed by a noun
an exchange, including prices and trades
rates, meaning per (four times per week)
If you only remember one thing, remember this: para points at a goal or endpoint ahead of you, and por points at the cause, trade, or stretch of time behind the action.
Test yourself
The only way to make por and para automatic is practice. Write a few sentences of your own for each use above, and pay attention every time you see one of these prepositions in a text or conversation.
When you feel ready, take our por vs. para quiz to see how much of this guide stuck. Getting a few wrong is part of the process. Every mistake tells you exactly which use to review.