Japanese Braille

Japanese Braille
Languages Japanese
Parent systems
Night writing
Print basis
Child systems
Two-Cell Chinese Braille (in conception)
Japanese Braille on a can of Asahi Super Dry beer, written "sake"

Japanese Braille is the braille script of the Japanese language. It is based on the original braille script, though the connection is tenuous. In Japanese it is known as tenji (点字), literally "dot characters". It transcribes Japanese more or less as it would be written in the hiragana or katakana syllabaries, without any provision for writing kanji (Chinese characters).

Japanese Braille is a vowel-based abugida. That is, the glyphs are syllabic, but unlike kana they contain separate symbols for consonant and vowel, and the vowel takes primacy. The vowels are written in the upper left corner (points 1, 2, 4) and may be used alone. The consonants are written in the lower right corner (points 3, 5, 6) and cannot occur alone.[1] However, the semivowel y is indicated by point 4, one of the vowel points, and the vowel combination is dropped to the bottom of the block. When this point is written in isolation, it indicates that the following syllable has a medial y, as in mya. Syllables beginning with w are indicated by dropping the vowel points to the bottom of the cell without additional consonant points.[2]

Main chart

The chart below shows each braille character under the corresponding hiragana and its romanization. In order to illustrate the derivation of each character from its component vowel and consonant, the vowel points are written in black, and the consonant points in green. There is no such distinction in braille as it is actually used.[3]

The vowels are assigned the braille patterns that occupy the upper-left half of the cell (dots 1-2-4) in numerical order: . (These are the first five letters of Braille's alphabet, , rotated to fit the available space.) The consonantal diacritics, on the other hand, have no apparent connection to international values or numerical order, corresponding as they do to international punctuation and formatting marks.

  a i u e o
⠁ (braille pattern dots-1) ⠃ (braille pattern dots-12) ⠉ (braille pattern dots-14) ⠋ (braille pattern dots-124) ⠊ (braille pattern dots-24)
k ka ki ku ke ko
⠡ (braille pattern dots-16) ⠣ (braille pattern dots-126) ⠩ (braille pattern dots-146) ⠫ (braille pattern dots-1246) ⠪ (braille pattern dots-246)
s sa shi su se so
⠱ (braille pattern dots-156) ⠳ (braille pattern dots-1256) ⠹ (braille pattern dots-1456) ⠻ (braille pattern dots-12456) ⠺ (braille pattern dots-2456)
t ta chi tsu te to
⠕ (braille pattern dots-135) ⠗ (braille pattern dots-1235) ⠝ (braille pattern dots-1345) ⠟ (braille pattern dots-12345) ⠞ (braille pattern dots-2345)
n na ni nu ne no
⠅ (braille pattern dots-13) ⠇ (braille pattern dots-123) ⠍ (braille pattern dots-134) ⠏ (braille pattern dots-1234) ⠎ (braille pattern dots-234)
h ha hi fu he ho
⠥ (braille pattern dots-136) ⠧ (braille pattern dots-1236) ⠭ (braille pattern dots-1346) ⠯ (braille pattern dots-12346) ⠮ (braille pattern dots-2346)
m ma mi mu me mo n
⠵ (braille pattern dots-1356) ⠷ (braille pattern dots-12356) ⠽ (braille pattern dots-13456) ⠿ (braille pattern dots-123456) ⠾ (braille pattern dots-23456) ⠴ (braille pattern dots-356)
y ya yu yo    -y-
⠌ (braille pattern dots-34) ⠬ (braille pattern dots-346) ⠜ (braille pattern dots-345) ⠈ (braille pattern dots-4)
r ra ri ru re ro
⠑ (braille pattern dots-15) ⠓ (braille pattern dots-125) ⠙ (braille pattern dots-145) ⠛ (braille pattern dots-1245) ⠚ (braille pattern dots-245)
w wa (w)i (w)e (w)o   -w-
⠄ (braille pattern dots-3) ⠆ (braille pattern dots-23) ⠖ (braille pattern dots-235) ⠔ (braille pattern dots-35) ⠢ (braille pattern dots-26)

Other symbols

In kana, a small tsu (), called sokuon, is used to indicate that the following consonant is geminate, and in interjections as a glottal stop. In katakana only, a long vowel is indicated with a horizontal stroke () called a chōon. This also looks like a half dash in braille:[3]

sokuon chōon
⠂ (braille pattern dots-2) ⠒ (braille pattern dots-25)

The placement of these blocks mirrors the equivalent kana: the sokuon indicates that the following consonant is geminate, whereas the chōon indicates that the preceding vowel is long.

In kana, the voiced consonants g, z, d, b are derived from the voiceless consonants k, s, t, h by adding a diacritic called dakuten to the kana, as in gi; in foreign words, vu is written by adding this to the vowel u. Similarly, p is derived from h by adding a small circle, handakuten. Two kana are fused into a single syllable by writing the second small, as in きゃ kya from ki + ya; this is called yōon.[3]

In Japanese Braille, the signs for these are prefixes. That is, the order is dakuten + ki for gi. When more than one occurs in a single syllable, they are combined in a single prefix block, as the yōon-dakuten used for ぎゃ gya.[3]

yōon +
yōon +
⠐ (braille pattern dots-5) ⠠ (braille pattern dots-6) ⠈ (braille pattern dots-4) ⠘ (braille pattern dots-45) ⠨ (braille pattern dots-46)

The yōon prefix uses the point that represents y in the blocks ya', yu, yo. When placed before ka, ku, ko, it produces kya, kyu, kyo. Likewise, the yōon-dakuten prefix before ka, ku, ko creates gya, gyu, gyo. And so on for the other consonants.

Unlike kana, which uses a subscript e, in braille the -ye in foreign borrowings is written with yōon and the kana from the e row: that is, kye, she, che, nye, hye, mye, rye, voiced gye, je, bye, and plosive pye are written with the yōon prefixes plus ke, se, te, ne, he, me, re. The syllable ye is written yōon plus e.

There is also a prefix for medial -w- called gōyōon. When combined with ka, it produces the obsolete syllable kwa. It may also be fused with the voicing prefix for gwa. For foreign borrowings, this extends to kwi, kwe, kwo and gwa, gwi, gwe, gwo. Gōyōon may also be combined with the vowels i, e, o for foreign wi, we, wo (now that the w in the original Japanese kana for wi, we, wo is silent); with ha, hi, he, ho for fa, fi, fe, fo and (when voiced) for va, vi, ve, vo; and with ta, chi, te, to for tsa, tsi, tse, tso. These two prefixes are identical to the question mark and full stop.

gōyōon +
⠢ (braille pattern dots-26) ⠲ (braille pattern dots-256)

These all parallel usage in kana. However, there are additional conventions which are unique to braille. Yōon and yōon-dakuten are also added to chi and shi to write ti, di and si, zi found in foreign borrowings; similarly gōyōon and gōyōon-dakuten are added to tsu to write tu, du. This differs from the system used in kana, where the base syllables are te and to respectively, and a subscript vowel i or u is added.

In an assignment that is counter-intuitive in kana, yōon + handakuten is prefixed to tsu, yu, yo to produce tyu, fyu, fyo in foreign words, and voiced for dyu, vyu, vyo. The latter—yōon + dakuten + handakuten, is impossible in kana:

yōon +
dakuten +
⠸ (braille pattern dots-456)


Japanese Braille is written as print Japanese would be written in kana. However, there are three discrepancies:


Besides the punctuation of Japanese, braille also has symbols to indicate that the following characters are Hindu numerals or the Latin alphabet.[3]

「・・・」 (・・・) hyphen ・・・ space
⠲ (braille pattern dots-256) ⠰ (braille pattern dots-56) ⠢ (braille pattern dots-26) ⠖ (braille pattern dots-235) ⠤ (braille pattern dots-36)⠀ (braille pattern blank)⠤ (braille pattern dots-36) ⠶ (braille pattern dots-2356)⠀ (braille pattern blank)⠶ (braille pattern dots-2356) ⠤ (braille pattern dots-36) ⠒ (braille pattern dots-25)⠒ (braille pattern dots-25) ⠂ (braille pattern dots-2)⠂ (braille pattern dots-2)⠂ (braille pattern dots-2) ⠀ (braille pattern blank)
⠤⠀⠤ ⠶⠀⠶ ⠒⠒ ⠂⠂⠂

As noted above, the space is used between words and also where an interpunct would be used when names are written in katakana. There are several additional punctuation marks.


At left, Japanese print and braille text. The embossed text includes non-braille lines, bullets, and an arrow. At right, an illustration of Western digits and letters.

Western letters and digits are indicated as follows:

⠼ (braille pattern dots-3456) ⠰ (braille pattern dots-56) ⠠ (braille pattern dots-6)

An additional sign indicate that the following characters are specifically English words and not just in the Latin alphabet.

Words immediately follow numbers, unless they begin with a vowel or with r-. Because the syllables a i u e o and ra ri ru re ro are homographic with the digits 0–9, a hyphen is inserted to separate them. Thus 6人 "six people" (6 nin) is written without a hyphen, 6nin, but 6円 "six yen" (6 en) is written with a hyphen, 6-en, because would be read as 66n.


An eight-dot extension of Japanese Braille, kantenji, has been devised to transcribe kanji.

  1. An isolated t would be read as wo, for example. The only exception to restriction is m, which when written alone is the syllabic nasal. This may be a design feature, as historically the syllabic nasal derives from mu.
  2. Except for the syllable wa, historic w is silent in modern Japanese.
  3. 1 2 3 4 5 "点字を読んでみよう (tenji o yonde miyō)". Braille Authority of Japan. Retrieved 2012-05-10.
  4. This does not mean Japanese Braille is completely phonetic. The grammatical particle wo, which is pronounced o, is nonetheless written wo.
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