와/과 vs 하고 vs (이)랑: Differences, Rules and Examples

Quick verdict

• Writing an essay, report or formal e-mail: 와/과.
• Speaking politely to a teacher, clerk or new acquaintance: 하고.
• Talking to friends, family or classmates: (이)랑.
• Beginner who wants one safe default for speaking: 하고.

Before you start: read the single-particle lessons if you can: 와/과 and with particle, 하고 and with particle and (이)랑 and with particle. Time: about 25 minutes.

What Is the One-Line Rule for 와/과 vs 하고 vs (이)랑?

The one-line rule is: 와/과 for writing and formal speech, 하고 for polite spoken Korean, and (이)랑 for friends and family. The three particles give the same meaning, "A and B" or "with A", so the choice depends on who reads or hears the sentence. A particle (조사, josa) is a short word that attaches to the end of a noun and shows its job in the sentence.

Register is the level of formality of a word or style. Korean speakers adjust register all day, and the particle for "and" or "with" is one of the places where it shows. Formality is separate from politeness: politeness comes mostly from the sentence ending, and formality comes from the whole set of choices, particles included.

The Same Sentence in All Three Registers

The same sentence, "I went with my younger sibling", takes three forms. Listen to each one at normal speed, then slowly.

1. Formal: 동생과 갔습니다. (dongsaenggwa gatseumnida) Pronunciation: [동생과 갇씀니다]. 동생 ends in the consonant ㅇ, so the particle is 과. The formal ending is 갔습니다.

2. Polite: 동생하고 갔어요. (dongsaenghago gasseoyo) Pronunciation: [동생하고 가써요]. The particle 하고 never changes. The polite ending is 갔어요.

3. Casual: 동생이랑 갔어. (dongsaengirang gasseo) Pronunciation: [동생이랑 가써]. 동생 ends in a consonant, so the particle is 이랑. The casual ending is 갔어.

The pattern is visible in the three sentences: the particle and the ending move up or down in formality together. The master table below puts every difference in one place.

How Do 와/과 vs 하고 vs (이)랑 Compare at a Glance?

The table compares the three particles on eight points and gives a value for each one. The meaning row stays the same, which is why register is the only real decision.

Each cell is a fact you can check in the single-particle lessons. The sections below take the differences one criterion at a time and name a winner for each.

Which Is More Formal: 와/과, 하고 or (이)랑?

와/과 is the most formal, 하고 sits in the middle, and (이)랑 is the most casual. 와/과 appears in newspapers, textbooks, speeches and official letters. 하고 appears in messages, blog posts and polite conversation. (이)랑 appears in chat, text messages and talk with friends.

The ladder matters because Korean speakers hear the particle as part of the whole sentence. 동생과 갔어 sounds slightly odd because the formal 과 meets the casual 어. The ladder gives a way to pair them: formal particle with formal ending, neutral particle with polite ending, casual particle with casual ending.

Winner for formality: 와/과, because only 와/과 fits formal writing and formal speech.

Form and Sound: 하고 Is the Easiest to Build

하고 is the easiest, because it never changes shape. 와/과 and (이)랑 each have two forms, and the last sound of the noun decides which to use.

The two-form particles build their consonant forms differently: 와/과 swaps 와 for 과, while (이)랑 adds 이 in front of 랑 (책이랑). Pronunciation adds a second layer. 과 tenses after ㄱ, ㄷ or ㅂ sounds (책과 [책꽈]), 하고 aspirates after them (책하고 [채카고]), and 이랑 carries the final consonant onto the 이 (책이랑 [채기랑]).

Winner for ease: 하고, because it has one form and no spelling decision.

Which One Works Best in Lists?

(이)랑 and 하고 work best for spoken lists, and 와/과 works best for written lists. A list is a run of three or more nouns, such as apples, pears and mandarins.

In all three patterns the object particle goes on the last noun only. Repeating the connecting particle after every noun is natural in speech and heavy in writing, which is why formal prose uses commas.

Winner for lists: (이)랑 in speech, 와/과 in writing, because each matches the way its register normally lists items.

Ending Pairs: Which Particle Goes with Which Ending

Each particle pairs with a typical sentence ending, and a matching pair sounds natural. The three common endings are the formal -ㅂ니다/-습니다, the polite -아요/-어요 and the casual -아/-어. The lesson on which Korean speech level to use explains the endings in full.

The "also heard" column shows the overlap. Polite endings accept both 하고 and (이)랑, so 친구랑 갔어요 is a normal sentence. The overlap is why the rule is a tendency and not a law.

Winner for ending pairing: it depends on the ending, with 와/과 for formal, 하고 for polite and (이)랑 for casual.

Worked Example: One Sentence in Three Registers

To rewrite a sentence in all three registers, keep the nouns and the verb, and change the particle and the ending together. Use the sentence "I went to the library with a friend" as a model.

1. Decide who will read or hear it. A report needs formal, a teacher needs polite, a friend needs casual.
2. Look at the last sound of the noun. 친구 ends in a vowel, so 와 and 랑 are the forms, and 하고 stays as it is.
3. Choose the particle. Formal: 친구와. Polite: 친구하고. Casual: 친구랑.
4. Choose the matching ending. Formal: 갔습니다. Polite: 갔어요. Casual: 갔어.
5. Assemble the sentence. Formal: 친구와 도서관에 갔습니다 ([친구와 도서과네 갇씀니다]). Polite: 친구하고 도서관에 갔어요 ([친구하고 도서과네 가써요]). Casual: 친구랑 도서관에 갔어 ([친구랑 도서과네 가써]).

You'll know it worked when the particle and the ending belong to the same row of the pairing table. Common mistake at this step: changing only the ending, which leaves a formal particle in a casual sentence.

The steps work for any noun. With a consonant-final noun such as 선생님, the formal form is 선생님과, the polite form is 선생님하고, and the casual form is 선생님이랑.

Which Should You Choose?

Choose by the reader or listener, not by the noun. Four situations cover most learners.

If You Are Writing an Essay, Report or Formal E-Mail

Choose 와/과. A report sentence such as 한국어와 영어를 공부합니다 ("I study Korean and English") reads as expected. 하고 or (이)랑 in the same sentence would read as casual.

If You Are Speaking Politely to a Teacher, Clerk or New Acquaintance

Choose 하고. 선생님하고 이야기했어요 ("I talked with the teacher") is polite and natural. 선생님이랑 is also heard, but 하고 is the safer default when the relationship is not close.

If You Are Talking to a Friend, Family Member or Classmate

Choose (이)랑. 친구랑 영화 봤어 ("I watched a movie with a friend") is what friends say. 와/과 here would sound like a speech.

If You Are a Beginner Who Wants One Default

Choose 하고 for speaking and 와/과 for writing. Those two choices cover polite conversation and school writing, and neither requires you to switch ending styles in the middle of a sentence.

An expert rule of thumb: if you hesitate, ask whether you would say the sentence to a friend. If yes, use (이)랑. If you would only write it, use 와/과. After the verdicts, the next section covers special cases.

Edge Cases and Exceptions

Four edge cases differ from the plain rule.

1. Fixed phrases with 와/과. The phrase "the difference between A and B" uses 와/과 in most writing: 한국어와 영어의 차이. Spoken Korean can say 한국어랑 영어의 차이, but the written form keeps 와/과.
2. Pronouns. 저, 나 and 너 end in vowels, so they take 와, 하고 or 랑 without any contraction: 저와, 저하고, 저랑, never 제랑.
3. Verbs that need a partner. 만나다 (to meet), 결혼하다 (to marry) and 싸우다 (to fight), and the comparison words 같다 and 다르다, accept all three particles: 친구와, 친구하고 and 친구랑 are each possible, depending on register.
4. Joining verbs and sentences. None of the three joins verbs. Verbs use -고 (먹고 마셔요), and a new sentence can start with 그리고 ("and, and then").

Particles can also stack after any of the three. Adding 도 gives 친구와도, 친구하고도 and 친구랑도 ("with the friend too"). The lesson on the also particle 도 explains the pattern.

Where Does the Rule of Thumb Fail?

The register rule is a tendency, not a law, and native speakers cross the lines often. Three limits are worth knowing.

• Mixing is common. A polite e-mail can pair 와/과 with the -어요 ending, and a speech can use 하고. The sentence does not become wrong; it moves to a slightly different tone.
• Personal and regional habits vary. Some speakers favor (이)랑 even with acquaintances, and others avoid it. This page does not claim to measure how often each particle appears.
• Context overrides particles. A friendly tone in an e-mail to a close colleague can allow 하고, while a stiff relationship in speech can call for 와/과.

When the rule and the situation disagree, copy the people around you: use the particle your listener uses with you. The limits above explain why the next section lists mistakes as mismatches and not as hard errors.

What Mistakes Do Learners Make with These Three Particles?

Five mistakes cover most errors. Each follows the pattern "learners often assume X, but actually Y, because Z."

1. Mixing registers in one sentence. Learners often write 동생과 갔어. Actually the formal particle and the casual ending clash, so match them: 동생과 갔습니다 or 동생이랑 갔어.
2. Using the wrong form for the last sound. Learners often write 책와 or 밥랑. Actually 와 follows vowels and 과 follows consonants, while 랑 follows vowels and 이랑 follows consonants, so write 책과 and 밥이랑.
3. Joining verbs. Learners often use 하고 or 와/과 between verbs, as in 먹하고 마셔요. Actually all three attach to nouns, so write 먹고 마셔요.
4. Using (이)랑 in formal writing. Learners often carry the chat habit into e-mail. Actually business writing expects 와/과, so write 팀과 회의했습니다.
5. Contracting a pronoun. Learners often write 내랑 or 제랑. Actually pronouns keep their base form, so write 나랑 and 저와.

A reliable self-check: before you write the particle, name the reader. The reader fixes the register, and the register fixes the particle.

Practice and Answers

Try all four items before you read the answers. Each answer has audio, normal and slow.

1. Choose the form. You are writing a school essay. Which particle fits: 한국어( ) 영어를 공부합니다?
2. Fix the error. An e-mail to a professor says 교수님이랑 상담했습니다. Rewrite it.
3. Convert. Make 친구와 갔습니다 into a casual sentence for a friend.
4. Write your own. Write one sentence about doing something with your family, in the polite style, using the particle that fits.

Answer Key

1. 한국어와 영어를 공부합니다. (hangugeowa yeongeoreul gongbuhamnida) Sounds like [한구거와 영어를 공부함니다]. 한국어 ends in a vowel, so the form is 와, and the formal ending fits an essay.

2. 교수님과 상담했습니다. (gyosunimgwa sangdamhaetseumnida) Sounds like [교수님과 상담핻씀니다]. Formal writing needs 과 after the consonant ㅁ, and the formal ending stays.

3. 친구랑 갔어. (chingurang gasseo) Sounds like [친구랑 가써]. The vowel-final noun takes 랑, and the casual ending 갔어 matches it.

4. Sample answer: 가족하고 여행했어요. (gajokhago yeohaenghaesseoyo) "I traveled with my family." Sounds like [가조카고 여행해써요]. 하고 pairs with the polite ending, and the final ㄱ of 가족 and the ㅎ of 하고 join into [카].

If an item went wrong, return to the pairing table and match the particle with the ending. Then continue with the next lessons.

Next Lessons and Where to Go from Here

After the comparison of 와/과 vs 하고 vs (이)랑, the next step is to practice the rule in conversation, starting with the single-particle lessons you have not yet read: 와/과 and with particle, 하고 and with particle and (이)랑 and with particle. For the wider set of confusable grammar points, visit the Korean grammar differences hub, and for the endings that go with each particle, read which Korean speech level to use. All three particles belong to the possessive and linking particles set.

For practice, use the grammar quizzes. This page uses Revised Romanization only as a learning aid; the Hangul is the reference. The whole comparison fits in one sentence: 와/과 vs 하고 vs (이)랑 is a choice of formality, with 와/과 for writing, 하고 for polite speech and (이)랑 for friends.

Frequently Asked Questions

What Is the Difference between 와/과, 하고 and (이)랑?

The meaning is the same, "and" between nouns or "with" a companion. The difference is formality. 와/과 is formal and written, 하고 is neutral and spoken, and (이)랑 is casual and spoken. 와/과 and (이)랑 also change shape with the last sound of the noun, while 하고 stays fixed.

Which One Should a Beginner Use in Conversation?

Use 하고 as the default. It is neutral, it never changes shape, and it works with polite endings such as -아요/-어요. Add (이)랑 once you talk with friends and classmates, since you will hear it constantly. Keep 와/과 for writing, because it can sound stiff in a relaxed chat.

Can I Mix Particles and Endings from Different Levels?

You can, and native speakers do, but some pairs sound mismatched. 동생과 갔어 pairs a formal particle with a casual ending. Match the pair when you can: 동생과 갔습니다 (formal), 동생하고 갔어요 (polite) and 동생이랑 갔어 (casual). The mix is understood and not a serious error.

Do 와/과, 하고 and (이)랑 Ever Differ in Meaning?

In normal use they do not. All three give "A and B" and "with A". One small difference is that 와/과 is the usual choice in fixed phrases such as 한국어와 영어의 차이 (the difference between Korean and English). Everything else in the choice is about register and the last sound of the noun.

Is 와/과 Only for Writing?

No. Formal speech such as news broadcasts, announcements and presentations uses 와/과 with the 합니다 ending. The particle is rare in relaxed chat. A good test is whether you would say the sentence to a friend: if you would, choose (이)랑 or 하고; if you would only write or announce it, choose 와/과.