全角（大陆、日本、韩国称全角；台湾、香港称全形；也称全宽或全碼）和半角（大陆、日本、韩国称半角；台湾、香港称半形；也称半宽或半碼），是计算机中，中、日、韩文的CJKV字符的显示格式。
传统上，英语或拉丁字母语言使用的电脑系统，每一个字母或符号，都是使用一字节的空间（一字节由8位元組成，共256个编码空间）来储存；而汉语、日语及韩语文字，由于数量大大超过256个，故惯常使用两字节来储存一个字符，在使用固定宽度文字的地方（如DOS、部分文字编辑器等），为了使字体看起来齐整，英文字母、数字及其他符号，也由原来只占一个字空间，改为一概占用两个字的空间来显示，并且使用两个字节来储存。所以，中、日、韩等文字称为全形字符，相比起来，拉丁字母或数字就称为半形字符。
JIS X 0201编码表把日语的片假名放进一字节的空间，故又称为“半角片假名”。
半形字符与全形字符的比较 [编辑]
半形字符与全形字符的比较（ASCII字符） [编辑]
半形字符与全形字符的比较（ASCII字符）
| ASCII |
全形字符 |
Unicode |
半形字符 |
Unicode |
| 0x20 |
" " |
U+3000 |
" " |
U+0020 |
| 0x21 |
！ |
U+FF01 |
! |
U+0021 |
| 0x22 |
＂ |
U+FF02 |
" |
U+0022 |
| 0x23 |
＃ |
U+FF03 |
# |
U+0023 |
| 0x24 |
＄ |
U+FF04 |
$ |
U+0024 |
| 0x25 |
％ |
U+FF05 |
% |
U+0025 |
| 0x26 |
＆ |
U+FF06 |
& |
U+0026 |
| 0x27 |
＇ |
U+FF07 |
' |
U+0027 |
| 0x28 |
（ |
U+FF08 |
( |
U+0028 |
| 0x29 |
） |
U+FF09 |
) |
U+0029 |
| 0x2A |
＊ |
U+FF0A |
* |
U+002A |
| 0x2B |
＋ |
U+FF0B |
+ |
U+002B |
| 0x2C |
， |
U+FF0C |
, |
U+002C |
| 0x2D |
－ |
U+FF0D |
- |
U+002D |
| 0x2E |
． |
U+FF0E |
. |
U+002E |
| 0x2F |
／ |
U+FF0F |
/ |
U+002F |
| 0x30 |
０ |
U+FF10 |
0 |
U+0030 |
| 0x31 |
１ |
U+FF11 |
1 |
U+0031 |
| 0x32 |
２ |
U+FF12 |
2 |
U+0032 |
| 0x33 |
３ |
U+FF13 |
3 |
U+0033 |
| 0x34 |
４ |
U+FF14 |
4 |
U+0034 |
| 0x35 |
５ |
U+FF15 |
5 |
U+0035 |
| 0x36 |
６ |
U+FF16 |
6 |
U+0036 |
| 0x37 |
７ |
U+FF17 |
7 |
U+0037 |
| 0x38 |
８ |
U+FF18 |
8 |
U+0038 |
| 0x39 |
９ |
U+FF19 |
9 |
U+0039 |
| 0x3A |
： |
U+FF1A |
: |
U+003A |
| 0x3B |
； |
U+FF1B |
; |
U+003B |
| 0x3C |
＜ |
U+FF1C |
< |
U+003C |
| 0x3D |
＝ |
U+FF1D |
= |
U+003D |
| 0x3E |
＞ |
U+FF1E |
> |
U+003E |
| 0x3F |
？ |
U+FF1F |
? |
U+003F |
| 0x40 |
＠ |
U+FF20 |
@ |
U+0040 |
| 0x41 |
Ａ |
U+FF21 |
A |
U+0041 |
| 0x42 |
Ｂ |
U+FF22 |
B |
U+0042 |
| 0x43 |
Ｃ |
U+FF23 |
C |
U+0043 |
| 0x44 |
Ｄ |
U+FF24 |
D |
U+0044 |
| 0x45 |
Ｅ |
U+FF25 |
E |
U+0045 |
| 0x46 |
Ｆ |
U+FF26 |
F |
U+0046 |
| 0x47 |
Ｇ |
U+FF27 |
G |
U+0047 |
| 0x48 |
Ｈ |
U+FF28 |
H |
U+0048 |
| 0x49 |
Ｉ |
U+FF29 |
I |
U+0049 |
| 0x4A |
Ｊ |
U+FF2A |
J |
U+004A |
| 0x4B |
Ｋ |
U+FF2B |
K |
U+004B |
| 0x4C |
Ｌ |
U+FF2C |
L |
U+004C |
| 0x4D |
Ｍ |
U+FF2D |
M |
U+004D |
| 0x4E |
Ｎ |
U+FF2E |
N |
U+004E |
| 0x4F |
Ｏ |
U+FF2F |
O |
U+004F |
| 0x50 |
Ｐ |
U+FF30 |
P |
U+0050 |
| 0x51 |
Ｑ |
U+FF31 |
Q |
U+0051 |
| 0x52 |
Ｒ |
U+FF32 |
R |
U+0052 |
| 0x53 |
Ｓ |
U+FF33 |
S |
U+0053 |
| 0x54 |
Ｔ |
U+FF34 |
T |
U+0054 |
| 0x55 |
Ｕ |
U+FF35 |
U |
U+0055 |
| 0x56 |
Ｖ |
U+FF36 |
V |
U+0056 |
| 0x57 |
Ｗ |
U+FF37 |
W |
U+0057 |
| 0x58 |
Ｘ |
U+FF38 |
X |
U+0058 |
| 0x59 |
Ｙ |
U+FF39 |
Y |
U+0059 |
| 0x5A |
Ｚ |
U+FF3A |
Z |
U+005A |
| 0x5B |
［ |
U+FF3B |
[ |
U+005B |
| 0x5C |
＼ |
U+FF3C |
\ |
U+005C |
| 0x5D |
］ |
U+FF3D |
] |
U+005D |
| 0x5E |
＾ |
U+FF3E |
^ |
U+005E |
| 0x5F |
＿ |
U+FF3F |
_ |
U+005F |
| 0x60 |
｀ |
U+FF40 |
` |
U+0060 |
| 0x61 |
ａ |
U+FF41 |
a |
U+0061 |
| 0x62 |
ｂ |
U+FF42 |
b |
U+0062 |
| 0x63 |
ｃ |
U+FF43 |
c |
U+0063 |
| 0x64 |
ｄ |
U+FF44 |
d |
U+0064 |
| 0x65 |
ｅ |
U+FF45 |
e |
U+0065 |
| 0x66 |
ｆ |
U+FF46 |
f |
U+0066 |
| 0x67 |
ｇ |
U+FF47 |
g |
U+0067 |
| 0x68 |
ｈ |
U+FF48 |
h |
U+0068 |
| 0x69 |
ｉ |
U+FF49 |
i |
U+0069 |
| 0x6A |
ｊ |
U+FF4A |
j |
U+006A |
| 0x6B |
ｋ |
U+FF4B |
k |
U+006B |
| 0x6C |
ｌ |
U+FF4C |
l |
U+006C |
| 0x6D |
ｍ |
U+FF4D |
m |
U+006D |
| 0x6E |
ｎ |
U+FF4E |
n |
U+006E |
| 0x6F |
ｏ |
U+FF4F |
o |
U+006F |
| 0x70 |
ｐ |
U+FF50 |
p |
U+0070 |
| 0x71 |
ｑ |
U+FF51 |
q |
U+0071 |
| 0x72 |
ｒ |
U+FF52 |
r |
U+0072 |
| 0x73 |
ｓ |
U+FF53 |
s |
U+0073 |
| 0x74 |
ｔ |
U+FF54 |
t |
U+0074 |
| 0x75 |
ｕ |
U+FF55 |
u |
U+0075 |
| 0x76 |
ｖ |
U+FF56 |
v |
U+0076 |
| 0x77 |
ｗ |
U+FF57 |
w |
U+0077 |
| 0x78 |
ｘ |
U+FF58 |
x |
U+0078 |
| 0x79 |
ｙ |
U+FF59 |
y |
U+0079 |
| 0x7A |
ｚ |
U+FF5A |
z |
U+007A |
| 0x7B |
｛ |
U+FF5B |
{ |
U+007B |
| 0x7C |
｜ |
U+FF5C |
| |
U+007C |
| 0x7D |
｝ |
U+FF5D |
} |
U+007D |
| 0x7E |
～ |
U+FF5E |
~ |
U+007E |
半形字符与全形字符的比较（日语字符） [编辑]
半形字符与全形字符的比较（日语字符）
| JIS X 0201 |
半形字符 |
Unicode |
全形字符 |
Unicode |
| 0xA1 |
｡ |
U+FF61 |
。 |
U+3002 |
| 0xA2 |
｢ |
U+FF62 |
「 |
U+300C |
| 0xA3 |
｣ |
U+FF63 |
」 |
U+300D |
| 0xA4 |
､ |
U+FF64 |
、 |
U+3001 |
| 0xA5 |
･ |
U+FF65 |
・ |
U+30FB |
| 0xA6 |
ｦ |
U+FF66 |
ヲ |
U+30F2 |
| 0xA7 |
ｧ |
U+FF67 |
ァ |
U+30A1 |
| 0xA8 |
ｨ |
U+FF68 |
ィ |
U+30A3 |
| 0xA9 |
ｩ |
U+FF69 |
ゥ |
U+30A5 |
| 0xAA |
ｪ |
U+FF6A |
ェ |
U+30A7 |
| 0xAB |
ｫ |
U+FF6B |
ォ |
U+30A9 |
| 0xAC |
ｬ |
U+FF6C |
ャ |
U+30E3 |
| 0xAD |
ｭ |
U+FF6D |
ュ |
U+30E5 |
| 0xAE |
ｮ |
U+FF6E |
ョ |
U+30E7 |
| 0xAF |
ｯ |
U+FF6F |
ッ |
U+30C3 |
| 0xB0 |
ｰ |
U+FF70 |
ー |
U+30FC |
| 0xB1 |
ｱ |
U+FF71 |
ア |
U+30A2 |
| 0xB2 |
ｲ |
U+FF72 |
イ |
U+30A4 |
| 0xB3 |
ｳ |
U+FF73 |
ウ |
U+30A6 |
| 0xB4 |
ｴ |
U+FF74 |
エ |
U+30A8 |
| 0xB5 |
ｵ |
U+FF75 |
オ |
U+30AA |
| 0xB6 |
ｶ |
U+FF76 |
カ |
U+30AB |
| 0xB7 |
ｷ |
U+FF77 |
キ |
U+30AD |
| 0xB8 |
ｸ |
U+FF78 |
ク |
U+30AF |
| 0xB9 |
ｹ |
U+FF79 |
ケ |
U+30B1 |
| 0xBA |
ｺ |
U+FF7A |
コ |
U+30B3 |
| 0xBB |
ｻ |
U+FF7B |
サ |
U+30B5 |
| 0xBC |
ｼ |
U+FF7C |
シ |
U+30B7 |
| 0xBD |
ｽ |
U+FF7D |
ス |
U+30B9 |
| 0xBE |
ｾ |
U+FF7E |
セ |
U+30BB |
| 0xBF |
ｿ |
U+FF7F |
ソ |
U+30BD |
| 0xC0 |
ﾀ |
U+FF80 |
タ |
U+30BF |
| 0xC1 |
ﾁ |
U+FF81 |
チ |
U+30C1 |
| 0xC2 |
ﾂ |
U+FF82 |
ツ |
U+30C4 |
| 0xC3 |
ﾃ |
U+FF83 |
テ |
U+30C6 |
| 0xC4 |
ﾄ |
U+FF84 |
ト |
U+30C8 |
| 0xC5 |
ﾅ |
U+FF85 |
ナ |
U+30CA |
| 0xC6 |
ﾆ |
U+FF86 |
ニ |
U+30CB |
| 0xC7 |
ﾇ |
U+FF87 |
ヌ |
U+30CC |
| 0xC8 |
ﾈ |
U+FF88 |
ネ |
U+30CD |
| 0xC9 |
ﾉ |
U+FF89 |
ノ |
U+30CE |
| 0xCA |
ﾊ |
U+FF8A |
ハ |
U+30CF |
| 0xCB |
ﾋ |
U+FF8B |
ヒ |
U+30D2 |
| 0xCC |
ﾌ |
U+FF8C |
フ |
U+30D5 |
| 0xCD |
ﾍ |
U+FF8D |
ヘ |
U+30D8 |
| 0xCE |
ﾎ |
U+FF8E |
ホ |
U+30DB |
| 0xCF |
ﾏ |
U+FF8F |
マ |
U+30DE |
| 0xD0 |
ﾐ |
U+FF90 |
ミ |
U+30DF |
| 0xD1 |
ﾑ |
U+FF91 |
ム |
U+30E0 |
| 0xD2 |
ﾒ |
U+FF92 |
メ |
U+30E1 |
| 0xD3 |
ﾓ |
U+FF93 |
モ |
U+30E2 |
| 0xD4 |
ﾔ |
U+FF94 |
ヤ |
U+30E4 |
| 0xD5 |
ﾕ |
U+FF95 |
ユ |
U+30E6 |
| 0xD6 |
ﾖ |
U+FF96 |
ヨ |
U+30E8 |
| 0xD7 |
ﾗ |
U+FF97 |
ラ |
U+30E9 |
| 0xD8 |
ﾘ |
U+FF98 |
リ |
U+30EA |
| 0xD9 |
ﾙ |
U+FF99 |
ル |
U+30EB |
| 0xDA |
ﾚ |
U+FF9A |
レ |
U+30EC |
| 0xDB |
ﾛ |
U+FF9B |
ロ |
U+30ED |
| 0xDC |
ﾜ |
U+FF9C |
ワ |
U+30EF |
| 0xDD |
ﾝ |
U+FF9D |
ン |
U+30F3 |
| 0xDE |
ﾞ |
U+FF9E |
゛ |
U+309B |
| 0xDF |
ﾟ |
U+FF9F |
゜ |
U+309C |
半形字符与全形字符的比较（韩文字符） [编辑]
半形字符与全形字符的比较（韩文字符）
| 半形字符 |
Unicode |
全形字符 |
Unicode |
| ﾠ |
U+FFA0 |
ㅤ |
U+3164 |
| ﾡ |
U+FFA1 |
ㄱ |
U+3131 |
| ﾢ |
U+FFA2 |
ㄲ |
U+3132 |
| ﾣ |
U+FFA3 |
ㄳ |
U+3133 |
| ﾤ |
U+FFA4 |
ㄴ |
U+3134 |
| ﾥ |
U+FFA5 |
ㄵ |
U+3135 |
| ﾦ |
U+FFA6 |
ㄶ |
U+3136 |
| ﾧ |
U+FFA7 |
ㄷ |
U+3137 |
| ﾨ |
U+FFA8 |
ㄸ |
U+3138 |
| ﾩ |
U+FFA9 |
ㄹ |
U+3139 |
| ﾪ |
U+FFAA |
ㄺ |
U+313A |
| ﾫ |
U+FFAB |
ㄻ |
U+313B |
| ﾬ |
U+FFAC |
ㄼ |
U+313C |
| ﾭ |
U+FFAD |
ㄽ |
U+313D |
| ﾮ |
U+FFAE |
ㄾ |
U+313E |
| ﾯ |
U+FFAF |
ㄿ |
U+313F |
| ﾰ |
U+FFB0 |
ㅀ |
U+3140 |
| ﾱ |
U+FFB1 |
ㅁ |
U+3141 |
| ﾲ |
U+FFB2 |
ㅂ |
U+3142 |
| ﾳ |
U+FFB3 |
ㅃ |
U+3143 |
| ﾴ |
U+FFB4 |
ㅄ |
U+3144 |
| ﾵ |
U+FFB5 |
ㅅ |
U+3145 |
| ﾶ |
U+FFB6 |
ㅆ |
U+3146 |
| ﾷ |
U+FFB7 |
ㅇ |
U+3147 |
| ﾸ |
U+FFB8 |
ㅈ |
U+3148 |
| ﾹ |
U+FFB9 |
ㅉ |
U+3149 |
| ﾺ |
U+FFBA |
ㅊ |
U+314A |
| ﾻ |
U+FFBB |
ㅋ |
U+314B |
| ﾼ |
U+FFBC |
ㅌ |
U+314C |
| ﾽ |
U+FFBD |
ㅍ |
U+314D |
| ﾾ |
U+FFBE |
ㅎ |
U+314E |
| ￂ |
U+FFC2 |
ㅏ |
U+314F |
| ￃ |
U+FFC3 |
ㅐ |
U+3150 |
| ￄ |
U+FFC4 |
ㅑ |
U+3151 |
| ￅ |
U+FFC5 |
ㅒ |
U+3152 |
| ￆ |
U+FFC6 |
ㅓ |
U+3153 |
| ￇ |
U+FFC7 |
ㅔ |
U+3154 |
| ￊ |
U+FFCA |
ㅕ |
U+3155 |
| ￋ |
U+FFCB |
ㅖ |
U+3156 |
| ￌ |
U+FFCC |
ㅗ |
U+3157 |
| ￍ |
U+FFCD |
ㅘ |
U+3158 |
| ￎ |
U+FFCE |
ㅙ |
U+3159 |
| ￏ |
U+FFCF |
ㅚ |
U+315A |
| ￒ |
U+FFD2 |
ㅛ |
U+315B |
| ￓ |
U+FFD3 |
ㅜ |
U+315C |
| ￔ |
U+FFD4 |
ㅝ |
U+315D |
| ￕ |
U+FFD5 |
ㅞ |
U+315E |
| ￖ |
U+FFD6 |
ㅟ |
U+315F |
| ￗ |
U+FFD7 |
ㅠ |
U+3160 |
| ￚ |
U+FFDA |
ㅡ |
U+3161 |
| ￛ |
U+FFDB |
ㅢ |
U+3162 |
| ￜ |
U+FFDC |
ㅣ |
U+3163 |
半形字符与全形字符的比较（其他字符） [编辑]
半形字符与全形字符的比较（其他字符）
| 半形字符 |
Unicode |
全形字符 |
Unicode |
| ⦅ |
U+2985 |
｟ |
U+FF5F |
| ⦆ |
U+2986 |
｠ |
U+FF60 |
| ¢ |
U+00A2 |
￠ |
U+FFE0 |
| £ |
U+00A3 |
￡ |
U+FFE1 |
| ¬ |
U+00AC |
￢ |
U+FFE2 |
| ¯ |
U+00AF |
￣ |
U+FFE3 |
| ¦ |
U+00A6 |
￤ |
U+FFE4 |
| ¥ |
U+00A5 |
￥ |
U+FFE5 |
| ₩ |
U+20A9 |
￦ |
U+FFE6 |
| ￨ |
U+FFE8 |
│ |
U+2502 |
| ￩ |
U+FFE9 |
← |
U+2190 |
| ￪ |
U+FFEA |
↑ |
U+2191 |
| ￫ |
U+FFEB |
→ |
U+2192 |
| ￬ |
U+FFEC |
↓ |
U+2193 |
| ￭ |
U+FFED |
■ |
U+25A0 |
| ￮ |
U+FFEE |
○ |
U+25CB |
