-(으)러 vs -(으)려고: Two 'In Order To's

Both -(으)러 and -(으)려고 translate into English as "in order to," and that shared translation is exactly why learners mix them up. In Korean they are not interchangeable: they differ on which main verbs they allow and what they emphasize. Get the one governing rule straight — does the main verb express going? — and the choice makes itself in almost every sentence.

The one distinction that settles most cases

-(으)러 attaches only to a clause whose main verb is motion — 가다 (go), 오다 (come), 다니다 (attend/commute regularly). It labels the purpose of that trip.

-(으)려고 works with any main verb and foregrounds the subject's intention behind whatever they do.

In the first sentence the main verb is 갔어요 ("went") — a trip — so -(으)러 fits and simply names why the trip happened. In the second, the main verb is 만들었어요 ("made"), which is not motion at all; only -(으)려고 can express the purpose there.

The decisive test: is the main verb motion?

This is the rule you should apply first, every time. Look at the main clause's verb. If it is not a verb of movement, -(으)러 is simply ungrammatical, and -(으)려고 is forced.

Here the main verb is 해요 ("do [a job]") — working is not motion — so ×돈을 벌러 아르바이트를 해요 is wrong, and 벌려고 is required. The same logic rules out -(으)러 with 공부하다, 만들다, 준비하다, 사다, and every other non-motion verb.

Making a plan and skipping dinner are not trips, so each takes -(으)려고. Try to force -(으)러 onto any of them and a native speaker will flag it instantly.

When the main verb is motion: both appear, with a nuance

The one zone where you actually have a choice is when the main clause verb is 가다/오다/다니다. There both endings are grammatical, and they differ in flavor.

• -(으)러 presents the purpose as the reason for the errand/trip itself. The focus is on going somewhere and what for.
• -(으)려고 presents the purpose as the intention you're acting on, and it can shape an action that happens before or around the going, not just the going itself.

Both are natural, but they frame things differently. 먹으러 가요 is squarely "I'm heading out, and eating is the errand." 먹으려고 일찍 나왔어요 puts the spotlight on the intention to eat, which is why I did something (left early) — the intention, not the trip, is the star. When the trip is the whole point, -(으)러 is crisper; when you're explaining the reasoning behind a choice, -(으)려고 fits better.

Both share one requirement: same subject

Whichever you pick, the purpose clause and the main clause must have the same subject — the one who intends is the one who acts. Neither ending can express "I did X so that you would do Y"; for a split-subject goal you need -도록 / -게. So 아이가 자도록 불을 껐어요 ("I turned off the light so the child would sleep") cannot be rewritten with -(으)러 or -(으)려고.

Why English speakers get this wrong

English "to buy a book" and "to save money" look identical — both are "to + verb" — so English gives no signal that Korean cares whether the main verb is a trip. Two mirror-image errors follow. First, learners force -(으)러 onto non-motion main clauses (×돈을 모으러 저축해요), because in English "to save" feels just like "to buy." Second, once they do have a motion main verb, they treat -(으)러 and -(으)려고 as fully swappable, missing the errand-vs-intention nuance. The cure is mechanical: look at the main verb first. Not motion → -(으)려고, no debate. Motion → either, and then choose by whether you're naming the trip's errand (-(으)러) or the intention driving a choice (-(으)려고). The dedicated side-by-side lives on the choosing -(으)러 vs -(으)려고 page.

Common Mistakes

1. Forcing -(으)러 onto a non-motion main verb. This is the number-one error. Working, making, buying, studying — none are trips.

2. Treating them as fully interchangeable even with motion verbs. They overlap there but aren't identical — pick by errand vs intention.

3. Switching subjects. Both endings demand a shared subject; a different-subject goal needs -도록/-게.

4. Marking tense on the purpose clause. Both stay tenseless — time lives on the main verb.

Key Takeaways

• Apply one test first: is the main verb motion (가다/오다/다니다)? If not, -(으)러 is impossible and -(으)려고 is forced.
• -(으)러 = the purpose of a trip (destination-bound); -(으)려고 = the intention behind any action (goal-bound).
• When the main verb is motion, both work: -(으)러 highlights the errand, -(으)려고 highlights the intention (and can motivate a non-going action).
• Both require the same subject in both clauses. For a different-subject goal, use -도록/-게.
• Neither purpose clause carries tense — mark past/future on the main verb only.