Text to binary

Type some text and see its binary (and hexadecimal) code instantly. You can also paste bits to turn them back into text. Everything happens in your browser.

Hello = 01001000 01100101 01101100 01101100 01101111

🔒 What you type never leaves your device. Everything is calculated in your browser.

Type in any of the four fields and the others update on their own. No size limit, and only for positive whole numbers.

Decimal (base 10)

Binary (base 2)

Octal (base 8)

Hexadecimal (base 16)

Any base (2 to 36)

Number

From base

To base

Result

Text to binary and hex

Text

Binary (8 bits per character)You can paste bits to turn them into text.

Hexadecimal (bytes)

How to convert text to binary

Type or paste your text in the "Text" field.
See the code in "Binary (8 bits per character)", highlighted.
To go back to text, paste the bits into that same field.
Tap Copy to take the result with you.

How it works

Each character is stored as one or more bytes, and each byte is written with 8 bits. For example, the letter H is the number 72, which in binary is 01001000; "Hi" is 01001000 01101001.

UTF-8 encoding is used, so accented letters and emojis take more than one byte. The table below shows the code for letters and numbers.

Text to binary and hex

Text	Decimal (base 10)	Binary (base 2)	Hexadecimal (base 16)
A	65	01000001	41
B	66	01000010	42
C	67	01000011	43
D	68	01000100	44
E	69	01000101	45
F	70	01000110	46
G	71	01000111	47
H	72	01001000	48
I	73	01001001	49
J	74	01001010	4A
K	75	01001011	4B
L	76	01001100	4C
M	77	01001101	4D
N	78	01001110	4E
O	79	01001111	4F
P	80	01010000	50
Q	81	01010001	51
R	82	01010010	52
S	83	01010011	53
T	84	01010100	54
U	85	01010101	55
V	86	01010110	56
W	87	01010111	57
X	88	01011000	58
Y	89	01011001	59
Z	90	01011010	5A
a	97	01100001	61
b	98	01100010	62
c	99	01100011	63
d	100	01100100	64
e	101	01100101	65
f	102	01100110	66
g	103	01100111	67
h	104	01101000	68
i	105	01101001	69
j	106	01101010	6A
k	107	01101011	6B
l	108	01101100	6C
m	109	01101101	6D
n	110	01101110	6E
o	111	01101111	6F
p	112	01110000	70
q	113	01110001	71
r	114	01110010	72
s	115	01110011	73
t	116	01110100	74
u	117	01110101	75
v	118	01110110	76
w	119	01110111	77
x	120	01111000	78
y	121	01111001	79
z	122	01111010	7A
0	48	00110000	30
1	49	00110001	31
2	50	00110010	32
3	51	00110011	33
4	52	00110100	34
5	53	00110101	35
6	54	00110110	36
7	55	00110111	37
8	56	00111000	38
9	57	00111001	39

Good to know

To convert binary to text, the bits must come in complete groups of 8.
Accented letters and emojis produce more than 8 bits because they take several bytes.
The text is not sent to any server or saved.

Frequently asked questions

How do you write "Hello" in binary?

01001000 01100101 01101100 01101100 01101111: each letter is 8 bits.

Can I translate binary to text?

Yes: paste the bits into the binary field and you will see the text.

Why does an accented letter take more bits?

Because in UTF-8 non-English characters use 2 or more bytes.

Is my text sent to a server?

No. Everything happens in your browser.