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 range 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.

Code page layout

Legend:

Alphabetic

Control character

Numeric digit

Punctuation

Extended punctuation

Graphic character

International

Undefined

TIS-620
	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F
0_
1_
2_	SP 0020 32	! 0021 33	" 0022 34	# 0023 35	$ 0024 36	% 0025 37	& 0026 38	' 0027 39	( 0028 40	) 0029 41	* 002A 42	+ 002B 43	, 002C 44	- 002D 45	. 002E 46	/ 002F 47
3_	0 0030 48	1 0031 49	2 0032 50	3 0033 51	4 0034 52	5 0035 53	6 0036 54	7 0037 55	8 0038 56	9 0039 57	: 003A 58	; 003B 59	< 003C 60	= 003D 61	> 003E 62	? 003F 63
4_	@ 0040 64	A 0041 65	B 0042 66	C 0043 67	D 0044 68	E 0045 69	F 0046 70	G 0047 71	H 0048 72	I 0049 73	J 004A 74	K 004B 75	L 004C 76	M 004D 77	N 004E 78	O 004F 79
5_	P 0050 80	Q 0051 81	R 0052 82	S 0053 83	T 0054 84	U 0055 85	V 0056 86	W 0057 87	X 0058 88	Y 0059 89	Z 005A 90	[ 005B 91	\ 005C 92	] 005D 93	^ 005E 94	_ 005F 95
6_	` 0060 96	a 0061 97	b 0062 98	c 0063 99	d 0064 100	e 0065 101	f 0066 102	g 0067 103	h 0068 104	i 0069 105	j 006A 106	k 006B 107	l 006C 108	m 006D 109	n 006E 110	o 006F 111
7_	p 0070 112	q 0071 113	r 0072 114	s 0073 115	t 0074 116	u 0075 117	v 0076 118	w 0077 119	x 0078 120	y 0079 121	z 007A 122	{ 007B 123	\| 007C 124	} 007D 125	~ 007E 126
8_
9_
A_		ก 0E01 161	ข 0E02 162	ฃ 0E03 163	ค 0E04 164	ฅ 0E05 165	ฆ 0E06 166	ง 0E07 167	จ 0E08 168	ฉ 0E09 169	ช 0E0A 170	ซ 0E0B 171	ฌ 0E0C 172	ญ 0E0D 173	ฎ 0E0E 174	ฏ 0E0F 175
B_	ฐ 0E10 176	ฑ 0E11 177	ฒ 0E12 178	ณ 0E13 179	ด 0E14 180	ต 0E15 181	ถ 0E16 182	ท 0E17 183	ธ 0E18 184	น 0E19 185	บ 0E1A 186	ป 0E1B 187	ผ 0E1C 188	ฝ 0E1D 189	พ 0E1E 190	ฟ 0E1F 191
C_	ภ 0E20 192	ม 0E21 193	ย 0E22 194	ร 0E23 195	ฤ 0E24 196	ล 0E25 197	ฦ 0E26 198	ว 0E27 199	ศ 0E28 200	ษ 0E29 201	ส 0E2A 202	ห 0E2B 203	ฬ 0E2C 204	อ 0E2D 205	ฮ 0E2E 206	ฯ 0E2F 207
D_	ะ 0E30 208	◌ั 0E31 209	า 0E32 210	ำ 0E33 211	◌ิ 0E34 212	◌ี 0E35 213	◌ึ 0E36 214	◌ื 0E37 215	◌ุ 0E38 216	◌ู 0E39 217	◌ฺ 0E3A 218					฿ 0E3F 223
E_	เ 0E40 224	แ 0E41 225	โ 0E42 226	ใ 0E43 227	ไ 0E44 228	ๅ 0E45 229	ๆ 0E46 230	◌็ 0E47 231	◌่ 0E48 232	◌้ 0E49 233	◌๊ 0E4A 234	◌๋ 0E4B 235	◌์ 0E4C 236	◌ํ 0E4D 237	◌๎ 0E4E 238	๏ 0E4F 239
F_	๐ 0E50 240	๑ 0E51 241	๒ 0E52 242	๓ 0E53 243	๔ 0E54 244	๕ 0E55 245	๖ 0E56 246	๗ 0E57 247	๘ 0E58 248	๙ 0E59 249	๚ 0E5A 250	๛ 0E5B 251
	_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.

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 (not authoritative)

Character encodings

Character sets

Early telecommunications	ASCII ISO/IEC 646 ISO/IEC 6937 T.61 BCD Baudot code Morse code (Telegraph code) Special telegraphy codes: Non-Latin, Chinese, Cyrillic

ISO/IEC 8859	-1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16

Bibliographic use	ANSEL ISO 5426 / 5426-2 / 5427 / 5428 / 6438 / 6861 / 6862 / 10585 / 10586 / 10754 / 11822 MARC-8

National standards	ArmSCII CNS 11643 GOST 10859 GB 18030 HKSCS ISCII JIS X 0201 JIS X 0208 JIS X 0212 JIS X 0213 KPS 9566 KS X 1001 PASCII SI 960 TIS-620 TSCII VISCII YUSCII

EUC	CN JP KR TW

ISO/IEC 2022	CN JP KR CCCII

MacOS codepages ("scripts")	Arabic CentralEurRoman ChineseSimp / EUC-CN ChineseTrad / Big5 Croatian Cyrillic Devanagari Dingbats Farsi Greek Gujarati Gurmukhi Hebrew Icelandic Japanese / ShiftJIS Korean / EUC-KR Roman Romanian Symbol Thai / TIS-620 Turkish Ukrainian

DOS codepages	111 112 113 151 161 162 163 164 165 220 300 301 367 371 437 449 620 667 668 708 709 710 711 720 737 770 771 772 773 774 775 776 777 778 790 806 808 813 819 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 872 874 876 877 878 881 882 883 884 885 891 895 896 897 898 899 900 901 902 903 904 906 907 909 910 911 912 913 914 915 916 919 920 921 922 923 925 926 927 928 932 934 936 938 941 942 943 944 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 971 991 1004 1006 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1023 1029 1034 1036 1038 1039 1040 1041 1042 1043 1044 1046 1086 1088 1089 1090 1092 1093 1098 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1111 1114 1115 1116 1117 1118 1119 1124 1125 1126 1127 1129 1131 1133 1139 1161 1162 1163 1167 1168 1169 1174 1270 1275 1276 1277 1280 1281 1282 1283 1284 1285 1286 1287 1288 1350 1351 1361 1362 1363 1373 Kamenický Mazovia MIK Iran System

Windows codepages	874 / TIS-620 932 / Shift JIS 936 / GBK 949 / EUC-KR 950 / Big5 1200 / UTF-16 (Little Endian) 1201 / UTF-16 (Big Endian) 1250 1251 1252 1253 1254 1255 1256 1257 1258 54936 / GB18030

EBCDIC codepages	1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 29 30 31 32 33 34 35 36 37/1140 38 39 40 251 252 254 256 257 258 259 260 264 273/1141 274 275 276 277/1142 278/1143 280/1144 281 282 283 284/1145 285/1146 286 287 288 289 290 293 297/1147 298 310 320 321 322 330 351 361 363 382 383 384 385 386 387 388 389 390 391 392 393 394 395 410 420/16804 421 423 424/12712 425 435 500/1148 803 829 833 834 835 836 837 838/1160 839 870/1153 871/1149 875/9067 880 881 882 883 884 885 886 887 888 889 890 892 893 905 918 924 930/1390 931 933/1364 935/1388 937/1371 939/1399 1001 1002 1003 1005 1007 1024 1025/1154 1026/1155 1027 1028 1030 1031 1032 1033 1037 1047/924 1068 1069 1070 1071 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1087 1091 1097 1110 1112/1156 1113 1122/1157 1123/1158 1130/1164 1132 1136 1137 1150 1151 1152 1159 1165 1166 1278 1303 1364 JEF KEIS

Platform specific	ATASCII CDC display code DEC-MCS DEC Radix-50 ELWRO-Junior Fieldata GSM 03.38 HP roman8 PETSCII TI calculator character sets WISCII ZX80 character set ZX Spectrum character set

Unicode / ISO/IEC 10646	UTF-8 UTF-16/UCS-2 UTF-32/UCS-4 UTF-7 UTF-1 UTF-EBCDIC GB 18030 SCSU BOCU-1

Miscellaneous codepages	APL Cork HZ JOHAB KOI8 TRON

Related topics	control character (C0 C1) CCSID Character encodings in HTML charset detection Han unification ISO 6429/IEC 6429/ANSI X3.64 mojibake

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