The McCune-Reischauer Romanisation of Korean

Medials

The vowels in Korean are very consistently pronounced, unlike in English. Consequently, their romanisation is fairly straightforward. The six basic vowels are romanised in the following way:

a
ŏ
i
o
u
ŭ

A distinctive feature of the McCune-Reischauer romanisation is the use of diacritics to differentiate between vowels.

The two double-vowels in Korean are romanised in the following way:

ae
e, ë

The diphthongs in Korean are constructed very regularly, which also makes their romanisation very straightforward.

ya
yo
yu
yae
ye
wa
oe
wi
ŭi
wae
we

Whilst officially, is written as 'oe', it is often written as 'oi' to avoid misrepresentation for people who don't know any Korean.

It's worth noting that sometimes is written 'we' for simplicity, though this is technically incorrect.

Initials and Finals

The consonants in Korean are sounded differently depending on where they're found within a word. This quality of the language is included into the romanisation. For the Korean letters below, the first English letter denotes the romanisation for if the consonant is found at the beginning of a syllable, the second for if it is found at the end.

k
kk, k
k', k
t
tt, -
t', t
p
pp, -
p', p
ch, t
tch, -
ch', t
s, t
ss, t
r, l
m
n
-, ng
h, t

There are some additional features of the romanisation that account for changes in the pronunciation when certain syllables follow one another. These changes are identified in the table below.

In the following table, the Korean letters along the top denote the final consonant of the first syllable, and the letters down the right denote the initial consonant, if any, of the second syllable. The pronunciation changes that are exceptions are coloured red.

kk pk ngg n'g mg lg
kk' pk' ngk' nk' mk' lk'
kt pt ngd nd md ld
kt' pt' ngt' nt' mt' lt'
kp pp ngb nb mb lb
kp' pp' ngp' np' mp' lp'
kch pch ngj nj mj lch
kch' pch' ngch' nch' mch' lch'
ks ps ngs ns ms ls
ngm mm ngm nm mm lm
ngn mn ngn nn mn ll
g b ng n m r
ngn mn ngn ll mn ll
kh ph ngh nh mh rh

Compound Finals

ks, k
ps, p
nj, n
nh, n
lg, l
lt', l
lb, l
lp', l
lm, l
ls, l
rh, l

Korean Date

The date today is,

4350 년 8 월 4 일 (4350, Month 8 Day 4) (24 September 2017 CE)

This is the date according to the traditional lunisolar calendar of Korea. (Note that this is not an authoritative calculation; I’m still working on the details.) The years count back to the legendary founding of Korea by 단군 왕검 (Dan-gun Wanggeom).