Binary Translator

Translate text to binary code and back, view the same bytes as hex, octal or decimal, and convert numbers between bases.

Text · 0 bytes

Binary

Hex

Octal

Decimal (byte values)

Space between bytes

Number base converter

Type a number into any field and the others update instantly. Arbitrarily large numbers are supported.

Binary (2)Octal (8)Decimal (10)Hexadecimal (16)Base 36

Custom base

ASCII table (0–127)

Dec	Hex	Oct	Bin	Character
0	00	000	00000000	NUL
1	01	001	00000001	SOH
2	02	002	00000010	STX
3	03	003	00000011	ETX
4	04	004	00000100	EOT
5	05	005	00000101	ENQ
6	06	006	00000110	ACK
7	07	007	00000111	BEL
8	08	010	00001000	BS
9	09	011	00001001	HT
10	0A	012	00001010	LF
11	0B	013	00001011	VT
12	0C	014	00001100	FF
13	0D	015	00001101	CR
14	0E	016	00001110	SO
15	0F	017	00001111	SI
16	10	020	00010000	DLE
17	11	021	00010001	DC1
18	12	022	00010010	DC2
19	13	023	00010011	DC3
20	14	024	00010100	DC4
21	15	025	00010101	NAK
22	16	026	00010110	SYN
23	17	027	00010111	ETB
24	18	030	00011000	CAN
25	19	031	00011001	EM
26	1A	032	00011010	SUB
27	1B	033	00011011	ESC
28	1C	034	00011100	FS
29	1D	035	00011101	GS
30	1E	036	00011110	RS
31	1F	037	00011111	US
32	20	040	00100000	SP
33	21	041	00100001	!
34	22	042	00100010	"
35	23	043	00100011	#
36	24	044	00100100	$
37	25	045	00100101	%
38	26	046	00100110	&
39	27	047	00100111	'
40	28	050	00101000	(
41	29	051	00101001	)
42	2A	052	00101010	*
43	2B	053	00101011	+
44	2C	054	00101100	,
45	2D	055	00101101	-
46	2E	056	00101110	.
47	2F	057	00101111	/
48	30	060	00110000	0
49	31	061	00110001	1
50	32	062	00110010	2
51	33	063	00110011	3
52	34	064	00110100	4
53	35	065	00110101	5
54	36	066	00110110	6
55	37	067	00110111	7
56	38	070	00111000	8
57	39	071	00111001	9
58	3A	072	00111010	:
59	3B	073	00111011	;
60	3C	074	00111100	<
61	3D	075	00111101	=
62	3E	076	00111110	>
63	3F	077	00111111	?
64	40	100	01000000	@
65	41	101	01000001	A
66	42	102	01000010	B
67	43	103	01000011	C
68	44	104	01000100	D
69	45	105	01000101	E
70	46	106	01000110	F
71	47	107	01000111	G
72	48	110	01001000	H
73	49	111	01001001	I
74	4A	112	01001010	J
75	4B	113	01001011	K
76	4C	114	01001100	L
77	4D	115	01001101	M
78	4E	116	01001110	N
79	4F	117	01001111	O
80	50	120	01010000	P
81	51	121	01010001	Q
82	52	122	01010010	R
83	53	123	01010011	S
84	54	124	01010100	T
85	55	125	01010101	U
86	56	126	01010110	V
87	57	127	01010111	W
88	58	130	01011000	X
89	59	131	01011001	Y
90	5A	132	01011010	Z
91	5B	133	01011011	[
92	5C	134	01011100	\
93	5D	135	01011101	]
94	5E	136	01011110	^
95	5F	137	01011111	_
96	60	140	01100000	`
97	61	141	01100001	a
98	62	142	01100010	b
99	63	143	01100011	c
100	64	144	01100100	d
101	65	145	01100101	e
102	66	146	01100110	f
103	67	147	01100111	g
104	68	150	01101000	h
105	69	151	01101001	i
106	6A	152	01101010	j
107	6B	153	01101011	k
108	6C	154	01101100	l
109	6D	155	01101101	m
110	6E	156	01101110	n
111	6F	157	01101111	o
112	70	160	01110000	p
113	71	161	01110001	q
114	72	162	01110010	r
115	73	163	01110011	s
116	74	164	01110100	t
117	75	165	01110101	u
118	76	166	01110110	v
119	77	167	01110111	w
120	78	170	01111000	x
121	79	171	01111001	y
122	7A	172	01111010	z
123	7B	173	01111011	{
124	7C	174	01111100	\|
125	7D	175	01111101	}
126	7E	176	01111110	~
127	7F	177	01111111	DEL

This tool runs entirely in your browser; your data is never sent to a server.

How to use

1Type or paste text to get its binary code — or paste binary to decode it.
2Hex, octal and decimal bytes are shown at the same time — copy any of them, or type into any field to convert back.
3Use the ASCII table to look up individual characters.
4For numbers, use the base converter: base 2, 8, 10, 16, 36 or any custom base from 2 to 36.

How text becomes binary

Computers store text as bytes. The translator encodes your text as UTF-8 and shows each byte as an 8-bit group: the letter A is code 65, which is 01000001 in binary, 41 in hex and 101 in octal. Plain English letters, digits and punctuation take one byte each, matching ASCII. Accented letters, other scripts and emoji take two to four bytes in UTF-8, so “é” becomes two 8-bit groups and an emoji four.

Decoding binary to text

Paste binary as groups of eight bits separated by spaces, and the tool turns each group back into a byte and decodes the bytes as UTF-8. A continuous string of bits is split into groups of eight automatically. If a value exceeds 255 or the bytes are not valid UTF-8, the tool shows an error — usually a sign that a digit is missing or the source used a different encoding.

Number base converter

The base converter turns whole numbers between binary (base 2), octal (8), decimal (10), hexadecimal (16), base 36 and any custom base from 2 to 36. It uses BigInt arithmetic, so very long numbers convert exactly without rounding. This is handy for reading bit masks, file permissions such as 755, colour codes, memory addresses and short IDs.

Frequently asked questions

What is “hello” in binary?

01101000 01100101 01101100 01101100 01101111 — one 8-bit byte per letter.

Why are some characters longer than 8 bits?

In UTF-8, characters outside basic ASCII — accented letters, non-Latin scripts and emoji — use two to four bytes.

How do I convert binary to decimal?

Each bit is a power of two, from 1 on the right. 1011 = 8 + 0 + 2 + 1 = 11. The base converter does it instantly.

Is my text sent to a server?

No. All conversions run in your browser.

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Binary Translator

Number base converter

How to use

How text becomes binary

Decoding binary to text

Number base converter

Frequently asked questions

What is “hello” in binary?

Why are some characters longer than 8 bits?

How do I convert binary to decimal?

Is my text sent to a server?

Not happy with the results?

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