Thai Industrial Standard 620-2533

Thai Industrial Standard 620-2533, commonly referred to as TIS-620, is the most common character set and character encoding for the Thai language. The standard is published by the Thai Industrial Standards Institute (TISI), an organ of the Ministry of Industry under the Royal Thai Government, and is the sole official standard for encoding Thai in Thailand. The descriptive name of the standard is "Standard for Thai Character Codes for Computers" (Thai: รหัสสำหรับอักขระไทยที่ใช้กับคอมพิวเตอร์). "2533" refers to year 2533 of the Buddhist Era (1990), the year the present version of the standard was published; a previous revision, TIS 620-2529 (1986), is now obsolete.

TIS-620 is the IANA preferred charset name for TIS-620, and that charset name is used also for ISO/IEC 8859-11 (which adds a no-break space character at 0xA0, which is unassigned in TIS-620). When the IANA name is used the codes are supplemented with the C0 and C1 control codes from ISO/IEC 6429.

Structure

TIS-620 is a conventionally structured Extended ASCII national character set that retains full compatibility with 7-bit ASCII and uses the 8-bit range hex A1 to FB for encoding the Thai alphabet. Due to the complex combining nature of Thai vowels and diacritics, TIS-620 is intended for information interchange only, and an additional display engine is required to compose characters correctly.

Variants

A nearly identical version of TIS-620 has been adopted as ISO/IEC 8859-11 in 2001, the sole difference being that ISO/IEC 8859-11 defines hex A0 as a non-breaking space, while TIS-620 leaves it undefined but reserved. (In practice, this small distinction is usually ignored.)

The ISO/IEC 8859-11 set has also been registered as ISO-IR-166 by Ecma International, but this variation adds explicit escape codes for signaling the beginning and end of Thai character sequences.

The TIS-620 character set ordering has been used essentially as is within Unicode (ISO/IEC 10646) as well. Unicode's Thai block is U+0E01 through U+0E7F, and TIS-620 Thai characters can be converted to UTF-16 simply by prefixing each byte with 0E and subtracting hex A0 from the value.

Character set

  Letter   Number   Punctuation   Symbol   Other   Undefined

TIS-620

	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F
0_	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|
1_	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|
2_	Template:Chset-color-misc|SP 0020 32	Template:Chset-color-punct|! 0021 33	Template:Chset-color-punct|" 0022 34	Template:Chset-color-punct|# 0023 35	Template:Chset-color-graph|$ 0024 36	Template:Chset-color-punct|% 0025 37	Template:Chset-color-punct|& 0026 38	Template:Chset-color-punct|' 0027 39	Template:Chset-color-punct|( 0028 40	Template:Chset-color-punct|) 0029 41	Template:Chset-color-punct|* 002A 42	Template:Chset-color-graph|+ 002B 43	Template:Chset-color-punct|, 002C 44	Template:Chset-color-punct|- 002D 45	Template:Chset-color-punct|. 002E 46	Template:Chset-color-punct|/ 002F 47
3_	Template:Chset-color-digit|0 0030 48	Template:Chset-color-digit|1 0031 49	Template:Chset-color-digit|2 0032 50	Template:Chset-color-digit|3 0033 51	Template:Chset-color-digit|4 0034 52	Template:Chset-color-digit|5 0035 53	Template:Chset-color-digit|6 0036 54	Template:Chset-color-digit|7 0037 55	Template:Chset-color-digit|8 0038 56	Template:Chset-color-digit|9 0039 57	Template:Chset-color-punct|: 003A 58	Template:Chset-color-punct|; 003B 59	Template:Chset-color-graph|< 003C 60	Template:Chset-color-graph|= 003D 61	Template:Chset-color-graph|> 003E 62	Template:Chset-color-punct|? 003F 63
4_	Template:Chset-color-punct|@ 0040 64	Template:Chset-color-alpha|A 0041 65	Template:Chset-color-alpha|B 0042 66	Template:Chset-color-alpha|C 0043 67	Template:Chset-color-alpha|D 0044 68	Template:Chset-color-alpha|E 0045 69	Template:Chset-color-alpha|F 0046 70	Template:Chset-color-alpha|G 0047 71	Template:Chset-color-alpha|H 0048 72	Template:Chset-color-alpha|I 0049 73	Template:Chset-color-alpha|J 004A 74	Template:Chset-color-alpha|K 004B 75	Template:Chset-color-alpha|L 004C 76	Template:Chset-color-alpha|M 004D 77	Template:Chset-color-alpha|N 004E 78	Template:Chset-color-alpha|O 004F 79
5_	Template:Chset-color-alpha|P 0050 80	Template:Chset-color-alpha|Q 0051 81	Template:Chset-color-alpha|R 0052 82	Template:Chset-color-alpha|S 0053 83	Template:Chset-color-alpha|T 0054 84	Template:Chset-color-alpha|U 0055 85	Template:Chset-color-alpha|V 0056 86	Template:Chset-color-alpha|W 0057 87	Template:Chset-color-alpha|X 0058 88	Template:Chset-color-alpha|Y 0059 89	Template:Chset-color-alpha|Z 005A 90	Template:Chset-color-punct|[ 005B 91	Template:Chset-color-punct|\ 005C 92	Template:Chset-color-punct|] 005D 93	Template:Chset-color-graph|^ 005E 94	Template:Chset-color-punct|_ 005F 95
6_	Template:Chset-color-graph|` 0060 96	Template:Chset-color-alpha|a 0061 97	Template:Chset-color-alpha|b 0062 98	Template:Chset-color-alpha|c 0063 99	Template:Chset-color-alpha|d 0064 100	Template:Chset-color-alpha|e 0065 101	Template:Chset-color-alpha|f 0066 102	Template:Chset-color-alpha|g 0067 103	Template:Chset-color-alpha|h 0068 104	Template:Chset-color-alpha|i 0069 105	Template:Chset-color-alpha|j 006A 106	Template:Chset-color-alpha|k 006B 107	Template:Chset-color-alpha|l 006C 108	Template:Chset-color-alpha|m 006D 109	Template:Chset-color-alpha|n 006E 110	Template:Chset-color-alpha|o 006F 111
7_	Template:Chset-color-alpha|p 0070 112	Template:Chset-color-alpha|q 0071 113	Template:Chset-color-alpha|r 0072 114	Template:Chset-color-alpha|s 0073 115	Template:Chset-color-alpha|t 0074 116	Template:Chset-color-alpha|u 0075 117	Template:Chset-color-alpha|v 0076 118	Template:Chset-color-alpha|w 0077 119	Template:Chset-color-alpha|x 0078 120	Template:Chset-color-alpha|y 0079 121	Template:Chset-color-alpha|z 007A 122	Template:Chset-color-punct|{ 007B 123	Template:Chset-color-graph|| 007C 124	Template:Chset-color-punct|} 007D 125	Template:Chset-color-graph|~ 007E 126	Template:Chset-color-undef|
8_	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|
9_	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|
A_	Template:Chset-color-undef|	Template:Chset-color-letter|ก 0E01 161	Template:Chset-color-letter|ข 0E02 162	Template:Chset-color-letter|ฃ 0E03 163	Template:Chset-color-letter|ค 0E04 164	Template:Chset-color-letter|ฅ 0E05 165	Template:Chset-color-letter|ฆ 0E06 166	Template:Chset-color-letter|ง 0E07 167	Template:Chset-color-letter|จ 0E08 168	Template:Chset-color-letter|ฉ 0E09 169	Template:Chset-color-letter|ช 0E0A 170	Template:Chset-color-letter|ซ 0E0B 171	Template:Chset-color-letter|ฌ 0E0C 172	Template:Chset-color-letter|ญ 0E0D 173	Template:Chset-color-letter|ฎ 0E0E 174	Template:Chset-color-letter|ฏ 0E0F 175
B_	Template:Chset-color-letter|ฐ 0E10 176	Template:Chset-color-letter|ฑ 0E11 177	Template:Chset-color-letter|ฒ 0E12 178	Template:Chset-color-letter|ณ 0E13 179	Template:Chset-color-letter|ด 0E14 180	Template:Chset-color-letter|ต 0E15 181	Template:Chset-color-letter|ถ 0E16 182	Template:Chset-color-letter|ท 0E17 183	Template:Chset-color-letter|ธ 0E18 184	Template:Chset-color-letter|น 0E19 185	Template:Chset-color-letter|บ 0E1A 186	Template:Chset-color-letter|ป 0E1B 187	Template:Chset-color-letter|ผ 0E1C 188	Template:Chset-color-letter|ฝ 0E1D 189	Template:Chset-color-letter|พ 0E1E 190	Template:Chset-color-letter|ฟ 0E1F 191
C_	Template:Chset-color-letter|ภ 0E20 192	Template:Chset-color-letter|ม 0E21 193	Template:Chset-color-letter|ย 0E22 194	Template:Chset-color-letter|ร 0E23 195	Template:Chset-color-letter|ฤ 0E24 196	Template:Chset-color-letter|ล 0E25 197	Template:Chset-color-letter|ฦ 0E26 198	Template:Chset-color-letter|ว 0E27 199	Template:Chset-color-letter|ศ 0E28 200	Template:Chset-color-letter|ษ 0E29 201	Template:Chset-color-letter|ส 0E2A 202	Template:Chset-color-letter|ห 0E2B 203	Template:Chset-color-letter|ฬ 0E2C 204	Template:Chset-color-letter|อ 0E2D 205	Template:Chset-color-letter|ฮ 0E2E 206	Template:Chset-color-letter|ฯ 0E2F 207
D_	Template:Chset-color-letter|ะ 0E30 208	Template:Chset-color-misc|◌ั 0E31 209	Template:Chset-color-letter|า 0E32 210	Template:Chset-color-letter|ำ 0E33 211	Template:Chset-color-misc|◌ิ 0E34 212	Template:Chset-color-misc|◌ี 0E35 213	Template:Chset-color-misc|◌ึ 0E36 214	Template:Chset-color-misc|◌ื 0E37 215	Template:Chset-color-misc|◌ุ 0E38 216	Template:Chset-color-misc|◌ู 0E39 217	Template:Chset-color-misc|◌ฺ 0E3A 218	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-graph|฿ 0E3F 223
E_	Template:Chset-color-letter|เ 0E40 224	Template:Chset-color-letter|แ 0E41 225	Template:Chset-color-letter|โ 0E42 226	Template:Chset-color-letter|ใ 0E43 227	Template:Chset-color-letter|ไ 0E44 228	Template:Chset-color-letter|ๅ 0E45 229	Template:Chset-color-letter|ๆ 0E46 230	Template:Chset-color-misc|◌็ 0E47 231	Template:Chset-color-misc|◌่ 0E48 232	Template:Chset-color-misc|◌้ 0E49 233	Template:Chset-color-misc|◌๊ 0E4A 234	Template:Chset-color-misc|◌๋ 0E4B 235	Template:Chset-color-misc|◌์ 0E4C 236	Template:Chset-color-misc|◌ํ 0E4D 237	Template:Chset-color-misc|◌๎ 0E4E 238	Template:Chset-color-punct|๏ 0E4F 239
F_	Template:Chset-color-digit|๐ 0E50 240	Template:Chset-color-digit|๑ 0E51 241	Template:Chset-color-digit|๒ 0E52 242	Template:Chset-color-digit|๓ 0E53 243	Template:Chset-color-digit|๔ 0E54 244	Template:Chset-color-digit|๕ 0E55 245	Template:Chset-color-digit|๖ 0E56 246	Template:Chset-color-digit|๗ 0E57 247	Template:Chset-color-digit|๘ 0E58 248	Template:Chset-color-digit|๙ 0E59 249	Template:Chset-color-punct|๚ 0E5A 250	Template:Chset-color-punct|๛ 0E5B 251	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|	Template:Chset-color-undef|
	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F

In the table above, 20 is the regular SPACE character. Code values 00-1F, 7F, 80-9F, A0, DB-DE and FC-FF are not assigned to characters by TIS-620.

Code values D1, D4-DA, E7-EE are combining characters.

Further reading

• Flohr, Guido (2016) [2006]. "Locale::RecodeData::TIS_620 - Conversion routines for TIS-620". CPAN libintl-perl. 1.0. Archived from the original on 2017-01-14. Retrieved 2017-01-14. {{cite web}}: |archive-date= / |archive-url= timestamp mismatch; 2017-01-15 suggested (help); Unknown parameter |dead-url= ignored (|url-status= suggested) (help)
• https://www.math.nmsu.edu/~mleisher/Software/csets/TIS620.TXT

External links

• Official reference (in Thai)
• Announcement in Royal Gazette of TIS 620-2533 and TIS 620-2529
• Mapping of TIS-620 to ISO 10646 at the Wayback Machine (archived June 5, 2013)