Por vs Para
The short answer
Por and para both translate as "for" in English but are not interchangeable in Spanish. Por expresses cause, duration, means of exchange, or the agent in a passive construction — for example, "Gracias por la ayuda" (thanks for the help) or "Lo compré por cinco euros" (I bought it for five euros). Para expresses purpose, destination, deadline, or intended recipient — for example, "Estudio para aprender" (I study in order to learn) or "El regalo es para ti" (the gift is for you).
Por and para are among the most studied — and most confused — prepositions in Spanish. The underlying logic is directional: por looks backward at the cause or exchange, while para looks forward at the goal or endpoint.
What you'll cover
2 lessons · CEFR B1 · Intermediate
- 1
Core distinctions between por (cause, duration, exchange, means) and para (purpose, destination, deadline, recipient).
- 2
Edge cases and fixed phrases where por or para choice is idiomatic rather than rule-based, such as por favor, para siempre, and estar para.
Examples
Gracias por tu ayuda.
Thanks for your help.
Cause / reason → por
Estudio para aprender.
I study in order to learn.
Purpose / goal → para
Habló por dos horas.
She spoke for two hours.
Duration → por
Necesito esto para el viernes.
I need this by Friday.
Deadline → para
Caminé por el parque.
I walked through the park.
Movement through a place → por
Salgo para Madrid mañana.
I'm leaving for Madrid tomorrow.
Destination → para
Common questions
What is the simplest way to decide between por and para?
Ask what relationship the preposition expresses. Por covers cause, exchange, duration, and means — the reason behind something. Para covers purpose, destination, deadline, and recipient — the goal or endpoint of something.
When do I use por to talk about time?
Por expresses duration — how long something lasts: "Estudié por dos horas" (I studied for two hours). Use para for deadlines: "Necesito esto para el viernes" (I need this by Friday). Duration uses por; deadlines use para.
How do I use por and para with movement?
Por indicates movement through or along a place: "Caminé por el parque" (I walked through the park). Para indicates movement toward a destination: "Salgo para Madrid mañana" (I'm leaving for Madrid tomorrow). Through = por; heading toward = para.
What are the most common fixed phrases with por?
Common fixed expressions include: por favor (please), por supuesto (of course), por fin (at last), por lo menos (at least), por eso (that's why), por ejemplo (for example), and por lo tanto (therefore). These must be memorised rather than derived from rules.
When does para express a standard or expectation?
Para can introduce a standard against which something is judged: "Para ser principiante, habla muy bien" (For a beginner, she speaks very well). This signals that something is surprising or unexpected relative to a reference point.
Related grammar topics
Practise this grammar in context
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