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Por vs para: how do you choose the right Spanish "for"?

Both mean "for," which is exactly the trap. The split is about direction: are you looking back at a cause, or forward to a purpose?

01
The one idea

Cause behind, or purpose ahead.

Para points forward to a goal, a destination, a recipient. Por points back to the reason, the exchange, the route. Same English word, opposite arrows.

paraforward
Purpose, destination, deadline, who it's for.
Estudio para el examen.I study for the exam.
porbackward
Cause, exchange, duration, movement through.
Estudio por mi madre.I study because of my mother.
02
The two jobs

What each one is really doing.

Sort the sentence into one column. If you can say "in order to" or "intended for," it is para. If it is a cause, a price, or a route, it is por.

para

forward
Purposepara aprender
Destinationsalgo para Madrid
Deadlinepara el lunes
Recipientes para ti

por

backward
Causepor el tráfico
Exchangeveinte euros por
Durationpor dos horas
Throughpor España

Rule of thumb: if "for" could become in order to plus a verb, you want para. If it marks a reason or a price, you want por.

03
Worked examples

Pick the preposition, then tap to check.

Por or para is highlighted. Decide forward or backward, then reveal the reason.

1
Gracias por tu ayuda.
Thanks for your help.
Why por
Thanks points back at the reason, the help you gave. Cause, so por.
2
Este regalo es para ti.
This gift is for you.
Why para
The gift is aimed at a recipient. Forward, so para.
3
Viajamos por España en tren.
We traveled through Spain by train.
Why por
Movement through a place, not toward a single destination. Route, so por.

Tap any sentence to reveal · tap the star to save

04
Questions

Frequently asked

Para looks forward to a purpose, goal, destination, or recipient. Por looks backward to a cause, reason, exchange, or means. Both can translate as "for" in English.

Para. When "for" could be replaced by "in order to" plus a verb, use para, as in "Estudio para aprender" (I study in order to learn).

Use por: "Gracias por tu ayuda" (thank you for your help). Por marks the reason or motive behind the thanks.

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