Korean already has a perfectly good, all-purpose "if" in -(으)면. So why does it also have -(느)ㄴ다면? Because the two do different jobs. -(으)면 states a plain condition — it says nothing about how likely or real that condition is. -(느)ㄴ다면 adds a layer of meaning on top: it tells the listener the speaker is supposing this — imagining it, hypothesizing about it, often knowing full well it isn't (or won't be) the case. It is the "if" of daydreams, thought experiments, and "supposing that…".
Building the form: plain declarative + 면
The trick to -(느)ㄴ다면 is that it is not a fresh ending you memorize from scratch. It is the plain declarative form (the 한다체 present) with 면 stuck on the end. So it inherits exactly the shape of the plain "dictionary-style" sentence:
| Word type | Plain declarative |
| Example |
|---|---|---|---|
| Verb, consonant stem | 먹는다 | 먹는다면 | 먹는다면 (if [one] eats) |
| Verb, vowel/ㄹ stem | 간다 / 산다 | 간다면 / 산다면 | 간다면 (if [one] goes) |
| Adjective | 좋다 / 예쁘다 | 좋다면 / 예쁘다면 | 좋다면 (if [it]'s good) |
| 이다 (copula) | — | (이)라면 | 학생이라면 (if [one]'s a student) |
The two things to burn in: verbs take 는다면/ㄴ다면 (는다면 after a consonant, ㄴ다면 after a vowel — exactly like the plain present), while adjectives take the bare 다면 (adjectives have no ㄴ/는 in their plain present). And the copula 이다 goes its own way as (이)라면: 이라면 after a consonant (학생이라면), 라면 after a vowel (부자라면, 나라면). That copula form is worth a second look — it descends from the old 이다 conditional, which is why it's 라 and not ×이다면.
이 책을 끝까지 읽는다면 많은 걸 배울 거예요.
i chaegeul kkeutkkaji ingneundamyeon maneun geol baeul geoyeyo
If you read this book to the end, you'll learn a lot.
그 사람이 정말 사과한다면 용서할 거예요.
geu sarami jeongmal sagwahandamyeon yongseohal geoyeyo
If he genuinely apologizes, I'll forgive him.
The core meaning: "supposing that…"
The heart of -(느)ㄴ다면 is that the speaker is entertaining a supposition rather than stating a real, expected condition. Where -(으)면 is neutral, -(느)ㄴ다면 flags that we are in the realm of imagination or hypothesis — frequently something contrary to fact.
내가 새라면 너에게 날아갈 텐데.
naega saeramyeon neoege naragal tende
If I were a bird, I'd fly to you.
복권에 당첨된다면 뭘 하고 싶어요?
bokgwone dangcheomdoendamyeon mwol hago sipeoyo
If you won the lottery, what would you want to do?
만약 내일 지구가 멸망한다면 뭘 할 거예요?
manyak naeil jiguga myeolmanghandamyeon mwol hal geoyeyo
If the world were to end tomorrow, what would you do?
Each of these invites the listener into a what-if. The bird sentence is flatly impossible; the lottery and the end of the world are wildly unlikely. -(느)ㄴ다면 is the natural home for exactly this register — and it pairs beautifully with the adverb 만약 ("supposing, hypothetically"), which many speakers add up front as a signpost that a supposition is coming.
(이)라면: "if it's / if it were X"
The copula form (이)라면 is so common it deserves its own spotlight. It means "if it's the case that X" or "if it were X," and it shows up constantly in the frame 나라면 / 저라면 — "if it were me."
나라면 그렇게 안 했을 거예요.
naramyeon geureoke an haesseul geoyeyo
If it were me, I wouldn't have done it that way.
부자라면 이런 걱정은 안 할 텐데.
bujaramyeon ireon geokjeong-eun an hal tende
If I were rich, I wouldn't have worries like this.
학생이라면 이 할인을 받을 수 있어요.
haksaeng-iramyeon i harineul badeul su isseoyo
If you're a student, you can get this discount.
That last example shows something important: (이)라면 is not always deeply hypothetical. "If you're a student" is a real, checkable condition. But even here -(느)ㄴ다면 adds a shade of "supposing you fall into that category," which is why it's natural for offers and eligibility. When the condition is fully mundane and expected, -(으)면 (학생이면) is also fine and slightly plainer.
Past 았/었다면: the counterfactual "if I had…"
Attach the past 았/었 before 다면 and you get the counterfactual "if [something] had happened" — the strongest contrary-to-fact reading, about a past that didn't occur.
조금 더 일찍 출발했다면 기차를 놓치지 않았을 거예요.
jogeum deo iljjik chulbalhaetdamyeon gichareul nochiji anasseul geoyeyo
If we'd left a little earlier, we wouldn't have missed the train.
다시 태어난다면 가수가 되고 싶어요.
dasi tae-eonandamyeon gasuga doego sipeoyo
If I were reborn, I'd want to be a singer.
The main clause of these counterfactuals very often ends in 았/었을 거예요 ("would have…") or -(으)ㄹ 텐데 ("…would, but"), the natural partners for a hypothesis that contradicts reality.
The crucial contrast: never habitual "when"
This is where -(느)ㄴ다면 and -(으)면 part company most sharply. Because -(으)면 is neutral, it can mean habitual "whenever." Because -(느)ㄴ다면 insists on a supposition, it cannot mean habitual "when." A recurring, real-world routine is not a supposition, so -(느)ㄴ다면 is simply wrong for it — you must use -(으)면.
Compare a real expected condition (use -(으)면) with a pure supposition (use -(느)ㄴ다면):
내일 비가 오면 집에 있을 거예요.
naeil biga omyeon jibe isseul geoyeyo
If it rains tomorrow, I'll stay home.
The rain is a genuine, plannable possibility, so -(으)면 is right. Switch to 온다면 and you'd be flagging the rain as a hypothesis you're toying with — fine for a thought experiment, odd for tomorrow's actual forecast.
Common Mistakes
Mistake 1: Using -(느)ㄴ다면 for a real, plannable condition. This over-hypothesizes an ordinary plan and sounds off.
❌ 집에 도착한다면 전화할게요.
Off — 도착한다면 supposes an unlikely arrival; a normal plan needs -(으)면.
✅ 집에 도착하면 전화할게요.
jibe dochakamyeon jeonhwahalgeyo
I'll call you when I get home.
Mistake 2: Using -(느)ㄴ다면 for habitual "when(ever)". A routine is never a supposition.
❌ 저는 스트레스를 받는다면 초콜릿을 먹어요.
Wrong — a recurring habit needs -(으)면, not the supposition form.
✅ 저는 스트레스를 받으면 초콜릿을 먹어요.
jeoneun seuteureseureul badeumyeon chokolliseul meogeoyo
Whenever I'm stressed, I eat chocolate.
Mistake 3: Mis-forming a vowel-stem verb. A vowel stem needs ㄴ다면, not the bare 다면 (that's for adjectives).
❌ 다시 태어나다면 가수가 되고 싶어요.
Wrong — a vowel-stem verb takes ㄴ다면: 태어나 → 태어난다면.
✅ 다시 태어난다면 가수가 되고 싶어요.
dasi tae-eonandamyeon gasuga doego sipeoyo
If I were reborn, I'd want to be a singer.
Mistake 4: Mis-forming the copula. 이다 does not take ×다면; it takes (이)라면.
❌ 학생다면 할인을 받을 수 있어요.
Wrong — the copula uses (이)라면: 학생 → 학생이라면.
✅ 학생이라면 할인을 받을 수 있어요.
haksaeng-iramyeon harineul badeul su isseoyo
If you're a student, you can get a discount.
Key Takeaways
- -(느)ㄴ다면 = plain declarative form + 면: verbs 는다면/ㄴ다면, adjectives 다면, copula (이)라면.
- It flags a supposition — imagined, hypothetical, often counterfactual — where -(으)면 is neutral. English hides this under one word, "if."
- Because it insists on a supposition, it can never mean habitual "when(ever)"; that is -(으)면 territory.
- Past 았/었다면 gives the counterfactual "if [something] had happened," usually answered by 았/었을 거예요 or -(으)ㄹ 텐데.
- (이)라면 ("if it's / were X," especially 나라면 "if it were me") is the highest-frequency member of this family.
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Start learning Korean→Related Topics
- -(으)면: If / WhenTOPIK 1 — Korean's all-purpose conditional — one ending that covers 'if', habitual 'when(ever)', and hypothetical 'if', with 으/면 allomorphy and counterfactual 았/었으면.
- -거든: If (Spoken Condition Before a Command)TOPIK 3 — The colloquial conditional -거든 that sets up a following command, request, or the speaker's own resolve — a warm, spoken 'if/when', kept distinct from the sentence-ending 거든요.
- -더라도 · -(으)ㄹ지라도: Even If (Hypothetical & Emphatic)TOPIK 3 — The stronger, more hypothetical 'even if' — conceding an unlikely or extreme supposition and insisting the outcome holds — plus its bookish cousin -(으)ㄹ지라도, and the stance contrast with everyday -아/어도.
- -았/었으면 좋겠다: I Wish / I HopeTOPIK 3 — The wish frame '-았/었으면 좋겠다' — and its one counterintuitive fact for English speakers: the -았/었- here is not past tense but a counterfactual marker, exactly like the 'were' in 'I wish I were.'