ASCII vs Latin-1 (ISO-8859-1)

ASCII

Legacy

The original 7-bit character encoding standard. Covers 128 characters: English letters, digits, punctuation, and control codes. The foundation that UTF-8 was designed to be backwards-compatible with.

IANA Name: US-ASCII
Byte Width: 1–1 bytes
Introduced: 1963

Latin-1 (ISO-8859-1)

Legacy

Extends ASCII to 256 characters, covering most Western European languages. The first 256 Unicode codepoints map 1:1 to Latin-1 bytes. Largely superseded by UTF-8 but still common in legacy systems.

IANA Name: ISO-8859-1
Byte Width: 1–1 bytes
Introduced: 1987

128

Shared characters

Only in ASCII

128

Only in Latin-1 (ISO-8859-1)

Shared Characters (first 128 shown)

Char	Codepoint	Name	ASCII	Latin-1 (ISO-8859-1)
	U+0000		00	00
	U+0001		01	01
	U+0002		02	02
	U+0003		03	03
	U+0004		04	04
	U+0005		05	05
	U+0006		06	06
	U+0007		07	07
	U+0008		08	08
	U+0009		09	09
	U+000A		0A	0A
	U+000B		0B	0B
	U+000C		0C	0C
	U+000D		0D	0D
	U+000E		0E	0E
	U+000F		0F	0F
	U+0010		10	10
	U+0011		11	11
	U+0012		12	12
	U+0013		13	13
	U+0014		14	14
	U+0015		15	15
	U+0016		16	16
	U+0017		17	17
	U+0018		18	18
	U+0019		19	19
	U+001A		1A	1A
	U+001B		1B	1B
	U+001C		1C	1C
	U+001D		1D	1D
	U+001E		1E	1E
	U+001F		1F	1F
	U+0020	SPACE	20	20
!	U+0021	EXCLAMATION MARK	21	21
"	U+0022	QUOTATION MARK	22	22
#	U+0023	NUMBER SIGN	23	23
$	U+0024	DOLLAR SIGN	24	24
%	U+0025	PERCENT SIGN	25	25
&	U+0026	AMPERSAND	26	26
'	U+0027	APOSTROPHE	27	27
(	U+0028	LEFT PARENTHESIS	28	28
)	U+0029	RIGHT PARENTHESIS	29	29
*	U+002A	ASTERISK	2A	2A
+	U+002B	PLUS SIGN	2B	2B
,	U+002C	COMMA	2C	2C
-	U+002D	HYPHEN-MINUS	2D	2D
.	U+002E	FULL STOP	2E	2E
/	U+002F	SOLIDUS	2F	2F
0	U+0030	DIGIT ZERO	30	30
1	U+0031	DIGIT ONE	31	31
2	U+0032	DIGIT TWO	32	32
3	U+0033	DIGIT THREE	33	33
4	U+0034	DIGIT FOUR	34	34
5	U+0035	DIGIT FIVE	35	35
6	U+0036	DIGIT SIX	36	36
7	U+0037	DIGIT SEVEN	37	37
8	U+0038	DIGIT EIGHT	38	38
9	U+0039	DIGIT NINE	39	39
:	U+003A	COLON	3A	3A
;	U+003B	SEMICOLON	3B	3B
<	U+003C	LESS-THAN SIGN	3C	3C
=	U+003D	EQUALS SIGN	3D	3D
>	U+003E	GREATER-THAN SIGN	3E	3E
?	U+003F	QUESTION MARK	3F	3F
@	U+0040	COMMERCIAL AT	40	40
A	U+0041	LATIN CAPITAL LETTER A	41	41
B	U+0042	LATIN CAPITAL LETTER B	42	42
C	U+0043	LATIN CAPITAL LETTER C	43	43
D	U+0044	LATIN CAPITAL LETTER D	44	44
E	U+0045	LATIN CAPITAL LETTER E	45	45
F	U+0046	LATIN CAPITAL LETTER F	46	46
G	U+0047	LATIN CAPITAL LETTER G	47	47
H	U+0048	LATIN CAPITAL LETTER H	48	48
I	U+0049	LATIN CAPITAL LETTER I	49	49
J	U+004A	LATIN CAPITAL LETTER J	4A	4A
K	U+004B	LATIN CAPITAL LETTER K	4B	4B
L	U+004C	LATIN CAPITAL LETTER L	4C	4C
M	U+004D	LATIN CAPITAL LETTER M	4D	4D
N	U+004E	LATIN CAPITAL LETTER N	4E	4E
O	U+004F	LATIN CAPITAL LETTER O	4F	4F
P	U+0050	LATIN CAPITAL LETTER P	50	50
Q	U+0051	LATIN CAPITAL LETTER Q	51	51
R	U+0052	LATIN CAPITAL LETTER R	52	52
S	U+0053	LATIN CAPITAL LETTER S	53	53
T	U+0054	LATIN CAPITAL LETTER T	54	54
U	U+0055	LATIN CAPITAL LETTER U	55	55
V	U+0056	LATIN CAPITAL LETTER V	56	56
W	U+0057	LATIN CAPITAL LETTER W	57	57
X	U+0058	LATIN CAPITAL LETTER X	58	58
Y	U+0059	LATIN CAPITAL LETTER Y	59	59
Z	U+005A	LATIN CAPITAL LETTER Z	5A	5A
[	U+005B	LEFT SQUARE BRACKET	5B	5B
\	U+005C	REVERSE SOLIDUS	5C	5C
]	U+005D	RIGHT SQUARE BRACKET	5D	5D
^	U+005E	CIRCUMFLEX ACCENT	5E	5E
_	U+005F	LOW LINE	5F	5F
`	U+0060	GRAVE ACCENT	60	60
a	U+0061	LATIN SMALL LETTER A	61	61
b	U+0062	LATIN SMALL LETTER B	62	62
c	U+0063	LATIN SMALL LETTER C	63	63
d	U+0064	LATIN SMALL LETTER D	64	64
e	U+0065	LATIN SMALL LETTER E	65	65
f	U+0066	LATIN SMALL LETTER F	66	66
g	U+0067	LATIN SMALL LETTER G	67	67
h	U+0068	LATIN SMALL LETTER H	68	68
i	U+0069	LATIN SMALL LETTER I	69	69
j	U+006A	LATIN SMALL LETTER J	6A	6A
k	U+006B	LATIN SMALL LETTER K	6B	6B
l	U+006C	LATIN SMALL LETTER L	6C	6C
m	U+006D	LATIN SMALL LETTER M	6D	6D
n	U+006E	LATIN SMALL LETTER N	6E	6E
o	U+006F	LATIN SMALL LETTER O	6F	6F
p	U+0070	LATIN SMALL LETTER P	70	70
q	U+0071	LATIN SMALL LETTER Q	71	71
r	U+0072	LATIN SMALL LETTER R	72	72
s	U+0073	LATIN SMALL LETTER S	73	73
t	U+0074	LATIN SMALL LETTER T	74	74
u	U+0075	LATIN SMALL LETTER U	75	75
v	U+0076	LATIN SMALL LETTER V	76	76
w	U+0077	LATIN SMALL LETTER W	77	77
x	U+0078	LATIN SMALL LETTER X	78	78
y	U+0079	LATIN SMALL LETTER Y	79	79
z	U+007A	LATIN SMALL LETTER Z	7A	7A
{	U+007B	LEFT CURLY BRACKET	7B	7B
\|	U+007C	VERTICAL LINE	7C	7C
}	U+007D	RIGHT CURLY BRACKET	7D	7D
~	U+007E	TILDE	7E	7E
	U+007F		7F	7F

Other Comparisons

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