Text to Hex Converter (ASCII and UTF-8)

Text

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Convert to

Outputa space between bytes

In hex

48 69 2C 20 63 61 66 C3 A9

8 characters, 9 bytes in UTF-8.

H48

i69

,2C

space20

c63

a61

f66

éC3A9

ASCII tableEvery character with its decimal, hex and binary code.Colour converterHex colour codes are base 16 too: convert HEX, RGB and HSL.Base64 encoderEncode and decode text or files as Base64.

Worked example, character by characterEach character’s code, then its UTF-8 bytes in hex

Character	Code point	Decimal	UTF-8 bytes (hex)
H	U+0048	72	48
i	U+0069	105	69
,	U+002C	44	2C
space	U+0020	32	20
c	U+0063	99	63
a	U+0061	97	61
f	U+0066	102	66
é	U+00E9	233	C3 A9

Characters outside ASCII take two to four bytes; the first byte’s leading 1s say how many.

ASCII tableEvery character with its decimal, hex and binary code.Colour converterHex colour codes are base 16 too: convert HEX, RGB and HSL.Base64 encoderEncode and decode text or files as Base64.

Method1 sourceChecked against 1 worked exampleUpdated Oct 2026

How this works

Method

Each character is first encoded as bytes, ASCII for plain English and UTF-8 for everything else, and each byte is written as two hex digits from 00 to FF. Hex is how editors, debuggers and network tools show raw text. Full method

Sources

The Unicode Standard

How it’s tested

One worked example for this page is checked by automated tests before every release: given the inputs, the tool must show the expected answer.

Privacy

On your device. Nothing you enter or open leaves this browser. About privacy labels

Changes

7 Oct 2026 Rebuilt with 18 conversion pages, including text to binary and hex, two’s complement, IEEE 754 floating point, a bitwise calculator and Roman numerals, each with its method and a table.
6 Oct 2026 Added key facts with worked examples of converting between bases.
4 Oct 2026 Redesigned: the working shown step by step, and the same number in the other common bases under the answer.
18 Jul 2026 Fixed large numbers: values above 2^53, such as 64-bit hex, now convert exactly instead of rounding.
13 Jan 2025 First published.

Every change on What’s new

How we make tools Report a mistake

How text becomes hex

For “Hi!”: H = 0x48, i = 0x69, ! = 0x21, so the hex is 48 69 21. A useful pattern: capitals run from 41 (A) to 5A (Z), small letters from 61 (a) to 7A (z), and digits from 30 (0) to 39 (9), so a digit’s hex is just 3 in front of it.

In code you often need the bytes written as escapes: \x48\x69 in C or Python strings, or %48%69 in URLs. Copy the spaced form and replace the spaces with the escape you need.

character → UTF-8 bytes → two hex digits per byte

Unicode assigns every character a code point written U+ and hex digits, such as U+00E9 for é; UTF-8 stores it as C3 A9. Source: The Unicode Standard.

Printable ASCII characters in hex

All 95 printable ASCII characters, from the space (20) to the tilde (7E).

All 95 printable ASCII characters, from the space (20) to the tilde (7E).
Hex	Character	Decimal
20	space	32
21	!	33
22	"	34
23	#	35
24	$	36
25	%	37
26	&	38
27	'	39
28	(	40
29	)	41

Show all 95 rows

2A	*	42
2B	+	43
2C	,	44
2D	-	45
2E	.	46
2F	/	47
30	0	48
31	1	49
32	2	50
33	3	51
34	4	52
35	5	53
36	6	54
37	7	55
38	8	56
39	9	57
3A	:	58
3B	;	59
3C	<	60
3D	=	61
3E	>	62
3F	?	63
40	@	64
41	A	65
42	B	66
43	C	67
44	D	68
45	E	69
46	F	70
47	G	71
48	H	72
49	I	73
4A	J	74
4B	K	75
4C	L	76
4D	M	77
4E	N	78
4F	O	79
50	P	80
51	Q	81
52	R	82
53	S	83
54	T	84
55	U	85
56	V	86
57	W	87
58	X	88
59	Y	89
5A	Z	90
5B	[	91
5C	\	92
5D	]	93
5E	^	94
5F	_	95
60	`	96
61	a	97
62	b	98
63	c	99
64	d	100
65	e	101
66	f	102
67	g	103
68	h	104
69	i	105
6A	j	106
6B	k	107
6C	l	108
6D	m	109
6E	n	110
6F	o	111
70	p	112
71	q	113
72	r	114
73	s	115
74	t	116
75	u	117
76	v	118
77	w	119
78	x	120
79	y	121
7A	z	122
7B	{	123
7C	\|	124
7D	}	125
7E	~	126

Frequently Asked Questions

What is “A” in hex?

Capital A is 41 in hex (65 in decimal), and small a is 61. The difference, 20 in hex, is the one bit that sets the case.

Why is my hex output longer than my text?

Every byte takes two hex digits, and characters outside ASCII take two to four bytes in UTF-8. So “é” becomes C3 A9, four hex digits for one character.

How do I get hex without spaces?

Switch the separator to None under the result. The bytes are then written as one run, such as 486921, which most tools accept as well.

2A	*	42
2B	+	43
2C	,	44
2D	-	45
2E	.	46
2F	/	47
30	0	48
31	1	49
32	2	50
33	3	51
34	4	52
35	5	53
36	6	54
37	7	55
38	8	56
39	9	57
3A	:	58
3B	;	59
3C	<	60
3D	=	61
3E	>	62
3F	?	63
40	@	64
41	A	65
42	B	66
43	C	67
44	D	68
45	E	69
46	F	70
47	G	71
48	H	72
49	I	73
4A	J	74
4B	K	75
4C	L	76
4D	M	77
4E	N	78
4F	O	79
50	P	80
51	Q	81
52	R	82
53	S	83
54	T	84
55	U	85
56	V	86
57	W	87
58	X	88
59	Y	89
5A	Z	90
5B	[	91
5C	\	92
5D	]	93
5E	^	94
5F	_	95
60	`	96
61	a	97
62	b	98
63	c	99
64	d	100
65	e	101
66	f	102
67	g	103
68	h	104
69	i	105
6A	j	106
6B	k	107
6C	l	108
6D	m	109
6E	n	110
6F	o	111
70	p	112
71	q	113
72	r	114
73	s	115
74	t	116
75	u	117
76	v	118
77	w	119
78	x	120
79	y	121
7A	z	122
7B	{	123
7C	\|	124
7D	}	125
7E	~	126

2A	*	42
2B	+	43
2C	,	44
2D	-	45
2E	.	46
2F	/	47
30	0	48
31	1	49
32	2	50
33	3	51
34	4	52
35	5	53
36	6	54
37	7	55
38	8	56
39	9	57
3A	:	58
3B	;	59
3C	<	60
3D	=	61
3E	>	62
3F	?	63
40	@	64
41	A	65
42	B	66
43	C	67
44	D	68
45	E	69
46	F	70
47	G	71
48	H	72
49	I	73
4A	J	74
4B	K	75
4C	L	76
4D	M	77
4E	N	78
4F	O	79
50	P	80
51	Q	81
52	R	82
53	S	83
54	T	84
55	U	85
56	V	86
57	W	87
58	X	88
59	Y	89
5A	Z	90
5B	[	91
5C	\	92
5D	]	93
5E	^	94
5F	_	95
60	`	96
61	a	97
62	b	98
63	c	99
64	d	100
65	e	101
66	f	102
67	g	103
68	h	104
69	i	105
6A	j	106
6B	k	107
6C	l	108
6D	m	109
6E	n	110
6F	o	111
70	p	112
71	q	113
72	r	114
73	s	115
74	t	116
75	u	117
76	v	118
77	w	119
78	x	120
79	y	121
7A	z	122
7B	{	123
7C	\|	124
7D	}	125
7E	~	126

Text to Hex Converter

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