ASCII to hex converter

Type ASCII text and get each character as a two-digit hex byte, formatted for code, URLs or hex editors.

Uppercase

Text12 chars · 12 bytes

Open file

Hex

Open file

Printable ASCII in hex (32–126)

Char	Hex	Dec
space	20	32
!	21	33
"	22	34
#	23	35
$	24	36
%	25	37
&	26	38
'	27	39
(	28	40
)	29	41
*	2A	42
+	2B	43
,	2C	44
-	2D	45
.	2E	46
/	2F	47
0	30	48
1	31	49
2	32	50
3	33	51
4	34	52
5	35	53
6	36	54
7	37	55
8	38	56
9	39	57
:	3A	58
;	3B	59
<	3C	60
=	3D	61
>	3E	62
?	3F	63

Char	Hex	Dec
@	40	64
A	41	65
B	42	66
C	43	67
D	44	68
E	45	69
F	46	70
G	47	71
H	48	72
I	49	73
J	4A	74
K	4B	75
L	4C	76
M	4D	77
N	4E	78
O	4F	79
P	50	80
Q	51	81
R	52	82
S	53	83
T	54	84
U	55	85
V	56	86
W	57	87
X	58	88
Y	59	89
Z	5A	90
[	5B	91
\	5C	92
]	5D	93
^	5E	94
_	5F	95

Char	Hex	Dec
`	60	96
a	61	97
b	62	98
c	63	99
d	64	100
e	65	101
f	66	102
g	67	103
h	68	104
i	69	105
j	6A	106
k	6B	107
l	6C	108
m	6D	109
n	6E	110
o	6F	111
p	70	112
q	71	113
r	72	114
s	73	115
t	74	116
u	75	117
v	76	118
w	77	119
x	78	120
y	79	121
z	7A	122
{	7B	123
\|	7C	124
}	7D	125
~	7E	126

Control codes 0–31 and 127 are in the full ASCII table.

ASCII vs. UTF-8

ASCII defines 128 characters. UTF-8 keeps those same 128 byte values and adds multi-byte sequences for everything else, so for plain English text the two give identical hex. This page defaults to ASCII and tells you when a character falls outside it; the encoding menu switches to UTF-8, UTF-16 or Windows-1252 when you need them. For the general tool see text to hex.

Questions people ask

How do I convert ASCII to hex?

Take each character’s ASCII code and write it in base 16 with two digits. “A” = 65 = 41, “z” = 122 = 7A, a space = 32 = 20.

What is “Hello” in hex?

48 65 6C 6C 6F.

Why does my text include characters ASCII can’t encode?

Accents, curly quotes and emoji are outside 7-bit ASCII. Switch the encoding menu to UTF-8 to get their multi-byte hex.

Which hex format should I pick?

Spaced pairs for reading, continuous for hashes and protocol fields, 0x48 for C or JavaScript arrays, \x48 for string literals, %48 for URLs.

Char	Hex	Dec
@	40	64
A	41	65
B	42	66
C	43	67
D	44	68
E	45	69
F	46	70
G	47	71
H	48	72
I	49	73
J	4A	74
K	4B	75
L	4C	76
M	4D	77
N	4E	78
O	4F	79
P	50	80
Q	51	81
R	52	82
S	53	83
T	54	84
U	55	85
V	56	86
W	57	87
X	58	88
Y	59	89
Z	5A	90
[	5B	91
\	5C	92
]	5D	93
^	5E	94
_	5F	95

Char	Hex	Dec
`	60	96
a	61	97
b	62	98
c	63	99
d	64	100
e	65	101
f	66	102
g	67	103
h	68	104
i	69	105
j	6A	106
k	6B	107
l	6C	108
m	6D	109
n	6E	110
o	6F	111
p	70	112
q	71	113
r	72	114
s	73	115
t	74	116
u	75	117
v	76	118
w	77	119
x	78	120
y	79	121
z	7A	122
{	7B	123
\|	7C	124
}	7D	125
~	7E	126

Char	Hex	Dec
@	40	64
A	41	65
B	42	66
C	43	67
D	44	68
E	45	69
F	46	70
G	47	71
H	48	72
I	49	73
J	4A	74
K	4B	75
L	4C	76
M	4D	77
N	4E	78
O	4F	79
P	50	80
Q	51	81
R	52	82
S	53	83
T	54	84
U	55	85
V	56	86
W	57	87
X	58	88
Y	59	89
Z	5A	90
[	5B	91
\	5C	92
]	5D	93
^	5E	94
_	5F	95

Char	Hex	Dec
`	60	96
a	61	97
b	62	98
c	63	99
d	64	100
e	65	101
f	66	102
g	67	103
h	68	104
i	69	105
j	6A	106
k	6B	107
l	6C	108
m	6D	109
n	6E	110
o	6F	111
p	70	112
q	71	113
r	72	114
s	73	115
t	74	116
u	75	117
v	76	118
w	77	119
x	78	120
y	79	121
z	7A	122
{	7B	123
\|	7C	124
}	7D	125
~	7E	126

Char	Hex	Dec
@	40	64
A	41	65
B	42	66
C	43	67
D	44	68
E	45	69
F	46	70
G	47	71
H	48	72
I	49	73
J	4A	74
K	4B	75
L	4C	76
M	4D	77
N	4E	78
O	4F	79
P	50	80
Q	51	81
R	52	82
S	53	83
T	54	84
U	55	85
V	56	86
W	57	87
X	58	88
Y	59	89
Z	5A	90
[	5B	91
\	5C	92
]	5D	93
^	5E	94
_	5F	95

Char	Hex	Dec
`	60	96
a	61	97
b	62	98
c	63	99
d	64	100
e	65	101
f	66	102
g	67	103
h	68	104
i	69	105
j	6A	106
k	6B	107
l	6C	108
m	6D	109
n	6E	110
o	6F	111
p	70	112
q	71	113
r	72	114
s	73	115
t	74	116
u	75	117
v	76	118
w	77	119
x	78	120
y	79	121
z	7A	122
{	7B	123
\|	7C	124
}	7D	125
~	7E	126