Revised Romanization vs McCune-Reischauer: Which Should You Use?

Revised Romanization vs McCune-Reischauer: the Short Verdict

Revised Romanization (RR) wins for almost every practical use in 2026, because South Korea's signs, maps, transport, government and most new textbooks use it. McCune–Reischauer (MR) wins only in three places: reading North Korean names, reading sources written before 2000, and working in Western library and Korean studies systems that still use MR-based schemes.

Both systems write Korean in the Latin alphabet, and both mostly follow pronunciation rather than spelling. They differ in how they show four things: aspirated consonants, the vowels ㅓ and ㅡ, consonants at the start of a word, and a few special cases such as 시. These differences make Busan and Pusan look like two different cities, even though they are the same word, 부산.

This comparison belongs to the Korean romanization section. The quick verdicts below give one line for each type of reader.

Quick Verdict by Reader

The master table that follows shows exactly what differs, criterion by criterion.

The Two Systems Side by Side

Ten common words show how far apart the spellings drift.

Seoul is the one exception in the table: the city's English name was fixed long before either system, so even MR texts usually write Seoul. The first criterion, aspiration, explains most of the other differences.

How Are Aspirated Consonants Marked?

Aspirated consonants are marked with an apostrophe in McCune–Reischauer and are written as plain letters in Revised Romanization. Aspiration is the strong puff of air after a consonant. Korean has three-way sets such as ㄱ (plain), ㅋ (aspirated) and ㄲ (tense), and English speakers hear the plain and aspirated ones as very similar.

• MR: 김포 → Kimp'o. The p' tells you ㅍ, a puffed p.
• RR: 김포 → Gimpo. The p could be ㅍ, or ㅂ at the end of a syllable.

MR therefore carries more information about sound. The problem is practical: apostrophes are often left out in emails, websites and signs, and once they disappear, MR k and k' look the same. You can hear the puff of air in the lesson on aspirated consonants.

Winner for this criterion: McCune–Reischauer, but only when the apostrophes are actually written.

How Are ㅓ and ㅡ Written?

The vowels ㅓ and ㅡ are written ŏ and ŭ in McCune–Reischauer and eo and eu in Revised Romanization. Neither vowel exists in standard English, so both systems needed a workaround.

MR puts a breve, a small curved mark, over o and u. RR uses two letters instead. Compare 청주: Ch'ŏngju in MR and Cheongju in RR. The MR form is shorter and, for linguists, more precise. The RR form can be typed on any phone but is often misread by English speakers, who say "ee-oh" for eo.

The real-world problem with MR here is the same as with apostrophes: breves are usually dropped. Without them, Ch'ŏngju becomes Chongju and is easily confused with 정주 or 종주. RR's eo cannot lose a mark because it has none.

Winner for this criterion: Revised Romanization, because its vowels survive any keyboard.

Initial Consonants: G/D/B or K/T/P?

The plain consonants ㄱ, ㄷ, ㅂ and ㅈ are written g, d, b and j at the start of a word in Revised Romanization, and k, t, p and ch in McCune–Reischauer. This is the difference behind Busan and Pusan, Daegu and Taegu, Jeju and Cheju.

Each system describes a real fact about Korean sound. At the start of a word, plain ㅂ is voiceless and lightly aspirated, so an English speaker often hears a p. MR wrote what English ears hear. Between vowels the same ㅂ becomes voiced, closer to b. RR chose b for every case before a vowel, so one Korean letter maps to one Roman letter more consistently.

The practical result: MR needs the apostrophe to separate plain p (ㅂ) from aspirated p' (ㅍ). RR separates them with b and p. When MR's apostrophe goes missing, Pusan and a hypothetical P'usan collapse into one spelling. Under RR they stay apart.

Winner for this criterion: Revised Romanization, for consistency between the letter and its spelling.

Which Is Easier to Type and Search?

Revised Romanization is easier to type and search because it uses only the 26 basic Latin letters. McCune–Reischauer needs ŏ, ŭ and an apostrophe, and those characters cause three problems:

1. Typing. Most keyboards do not have ŏ or ŭ, so writers substitute o, u, or even "oe" and "eu".
2. Search. A search for Ch'ŏngju may miss pages that wrote Chongju, Ch'ongju or Chŏngju.
3. Data. Older databases and file names sometimes reject or corrupt special characters.

A familiar example is the North Korean capital, 평양. Its MR form is P'yŏngyang, but most English media write Pyongyang, which is neither proper MR nor RR (RR gives Pyeongyang). This is the everyday cost of special characters.

Winner for this criterion: Revised Romanization, clearly.

Who Uses Each System Today?

Revised Romanization is used by the South Korean government, on all road and transport signs, in official publications and in most textbooks for learners. McCune–Reischauer is used, in adapted forms, by North Korea and by many Western libraries and Korean studies publications.

• South Korea. From 1984 to 2000 South Korea used an official system based on MR, which is why older signs, maps and passports show Pusan and Taegu. Revised Romanization replaced it on 7 July 2000.
• North Korea. The official romanization of 조선글, North Korea's name for the script, is based on MR. See Chosŏn'gŭl for more on North Korean usage.
• Libraries. The ALA-LC romanization tables used by the Library of Congress and many English-language libraries follow an MR-based scheme for Korean.
• Scholarship. Many history and Korean studies journals use MR, especially for pre-modern topics. Linguists often use a third option, Yale romanization, which follows spelling.
• Names. People and companies keep older spellings; read more in romanization of Korean names.

Winner for this criterion: Revised Romanization for South Korea and daily life; McCune–Reischauer for North Korea and much academic work.

Where Did the Two Systems Come From?

McCune–Reischauer came first, in 1939, and Revised Romanization replaced South Korea's MR-based system in 2000. Between those dates South Korea switched official systems several times, which is why older documents disagree with each other.

The table explains a common puzzle. A South Korean passport issued in 1995 may show an MR-style name, while a road sign photographed in 2010 shows RR for the same place. Both were correct for their date. The switch in 2000 also explains why so many established spellings survive: they were official when they were chosen.

Which Is Closer to How Korean Sounds?

McCune–Reischauer is usually closer to how Korean sounds to an English speaker, when it is written in full. It was designed by George M. McCune and Edwin O. Reischauer to help English readers produce Korean sounds, while RR was designed for consistency and easy typing.

Two examples make the difference concrete. MR's Pusan matches the voiceless p an English listener hears at the start of 부산. MR's ŭ is a single vowel symbol, while RR's eu invites a two-vowel reading. On the other hand, MR asks English readers to know what the apostrophe means; without that knowledge, k and k' sound identical to them.

Neither system shows the tense consonants ㄲ, ㄸ, ㅃ in a way an English speaker can pronounce. Both write them as doubled letters (kk, tt, pp), which do not exist as sounds in English.

Winner for this criterion: McCune–Reischauer in theory; in practice the gap shrinks because its marks are so often dropped.

How to Convert between RR and MR

To convert a word from Revised Romanization to McCune–Reischauer, change five things in order. Using 청주 (Cheongju) as the example:

1. Vowels. eo → ŏ, eu → ŭ: Cheongju → Chŏngju.
2. Aspirated consonants. Add an apostrophe after ㅋ ㅌ ㅍ ㅊ: Chŏngju → Ch'ŏngju (ㅊ is aspirated).
3. Plain consonants at word start. g d b j → k t p ch: 대구 Daegu → Taegu.
4. ㅅ before ㅣ. si → shi.
5. Syllable breaks after n. Add an apostrophe where n and g meet across syllables: 한글 Hangeul → Han'gŭl.

You'll know it worked when your result matches a published MR form such as Ch'ŏngju or Han'gŭl. Converting the other way is the same list in reverse. Learn the full Revised Romanization rules first if any RR spelling surprises you.

How to Tell Which System a Text Uses

You can identify the system behind any romanized word with five quick checks. Run them in this order and stop at the first clear sign.

1. Breves or apostrophes inside a word (ŏ, ŭ, k', Han'gŭl): McCune–Reischauer.
2. eo or eu (Cheongju, Geumgang): Revised Romanization.
3. Place names starting with P, T, K or Ch where RR has B, D, G or J (Pusan, Taegu, Kwangju, Cheju): McCune–Reischauer, possibly with its marks dropped.
4. shi for 시 (Shinch'on, Shilla): McCune–Reischauer; RR writes si (Sinchon, Silla).
5. None of the above: often a personal or brand spelling that follows neither system.

Hybrid forms are common in English media. The North Korean leader's name is usually printed Kim Jong Un; full MR would be Kim Chŏng-ŭn and RR would be Gim Jeong-eun. Pyongyang is likewise MR with its marks removed. When a spelling fits neither system, treat it as an established name and look up the Hangul.

Practice: Convert 10 Words from RR to MR

Convert each Revised Romanization spelling to McCune–Reischauer using the five steps above. Answers follow the list.

1. Gyeongju (경주)
2. Daejeon (대전)
3. Jeonju (전주)
4. Pohang (포항)
5. Chuncheon (춘천)
6. Gangneung (강릉)
7. gimchi (김치)
8. Suwon (수원)
9. Sinchon (신촌)
10. Tongyeong (통영)

Answers: 1 Kyŏngju, 2 Taejŏn, 3 Chŏnju, 4 P'ohang, 5 Ch'unch'ŏn, 6 Kangnŭng, 7 kimch'i, 8 Suwŏn, 9 Shinch'on, 10 T'ongyŏng. If you missed an apostrophe, check whether the consonant is ㅋ, ㅌ, ㅍ or ㅊ; if you missed a breve, check for ㅓ or ㅡ.

Which Should You Choose?

Choose Revised Romanization unless your reading material or your institution already uses McCune–Reischauer. The three most common situations are below.

Travellers and Map Users

Use Revised Romanization. South Korean road signs, subway and rail maps, airport signs and online maps all use RR. If an old guidebook says Kyŏngju, look for Gyeongju on the sign. For the short definition, see the glossary entry on Revised Romanization.

Students of Korean

Use Revised Romanization only as a bridge, then drop it. Textbooks and apps use RR, so it helps for the first days. The basic Hangul letters can be learned in a few days of steady study, and Hangul shows the sounds more clearly than either system.

Researchers and North Korea Readers

Use McCune–Reischauer to read and cite your sources, and know RR for modern South Korean names. Library catalogues, older journals and North Korean texts all use MR-based spellings. For a definition, see McCune–Reischauer in the glossary.

People Romanizing Their Own Name

Use the spelling already on your passport, degree certificates and bank records, whichever system it came from. If you have no established spelling yet, Revised Romanization is the safest default, because Korean government offices will recognise it. A name romanized as Choe in RR and Ch'oe in MR is often written Choi in practice; any of the three is acceptable if you use it everywhere. The page on romanization of Korean names explains the common surname spellings.

Where Each System Falls Short

Each system has an honest weakness that its supporters do not always mention.

• Revised Romanization writes aspirated ㅍ and a syllable-final ㅂ with the same p, as in Gimpo, and misleads English readers with eo and eu. It also does not write tensification, so 압구정, pronounced [압꾸정], is Apgujeong.
• McCune–Reischauer depends on marks that are usually dropped online. Without them it is less clear than RR, not more. Its rules for consonants between syllables are also more complex for beginners.
• Both systems fail to show tense consonants in a form English speakers can say, and neither shows intonation.

Expert insight: no romanization system can replace audio for learning sounds. The choice between RR and MR is about reading signs and sources, not about pronunciation.

Bottom Line on Revised Romanization vs McCune-Reischauer

On Revised Romanization vs McCune-Reischauer, the practical answer is RR for South Korea and daily use, and MR for North Korea, older sources and many libraries. RR wins on typing, searching and consistency; MR wins on sound detail when its marks survive. Learn RR first, learn to recognise MR, and move to Hangul as soon as you can.

Frequently Asked Questions

Is McCune–Reischauer still official anywhere? Yes. North Korea's official romanization is based on McCune–Reischauer, which is why you see spellings such as P'yŏngyang. Many Western libraries also catalogue Korean books with an MR-based scheme. In South Korea, MR has not been official since July 2000, when Revised Romanization replaced the MR-based system used from 1984.

Why do some names still use MR spellings? Many people, companies and institutions chose their English spelling before 2000 and kept it. Revised Romanization allows established spellings for people and companies, so names such as Park Chung-hee, Pusan National University and Kia keep older forms. Changing a spelling on passports, degrees and brands costs more than keeping it.

Can I use MR in a Korean class? Most modern textbooks and teachers use Revised Romanization or no romanization at all, so MR will confuse classmates and answer keys. Use it only if your course or university department asks for it, as some history and Korean studies departments do. In either case, move to reading Hangul as soon as you can.

Which system does Wikipedia use? English Wikipedia's naming guidelines generally use Revised Romanization for South Korean topics and McCune–Reischauer for North Korean topics, with established spellings kept for well-known people. That is why one site shows both Busan and P'yŏngyang. Check the current guideline page, because Wikipedia conventions can change after discussion.