Text to Binary Converter

Written byOleh Soloninupdated 25 September 2026

Text or code

Direction

Base

Result

Result01001000 01101001
Directiontext → code
Basebinary
Groups2
Characters2
Bytes in UTF-82

Every letter is a number

Converts text into binary, hexadecimal or decimal character codes and back again.

A computer knows no letters: it stores numbers, and letters appear only when they are displayed. A Latin H is the number 72; a Cyrillic А is 1040. Converting to binary simply shows the same number in another base.

Latin fits inside eight bits, which is why its binary form appears as neat groups of eight. Cyrillic needs more, and its codes run past a single byte — visible immediately in the length of the groups.

How to use

Enter text or a code.
Pick the direction — to code or from code — and the base: binary, hexadecimal or decimal.
Copy the result; next to it you get the number of groups and characters and the size in UTF-8 bytes.

Character codes in three bases

The tool writes out each character's Unicode number. The UTF-8 size is a separate figure: one byte for a Latin letter, up to four for an emoji.

Every row is output from this page's converter.
Character	Decimal	Binary	Hex	UTF-8 bytes
H	72	01001000	48	1
i	105	01101001	69	1
Я	1071	10000101111	42F	2
€	8364	10000010101100	20AC	3
😀	128512	11111011000000000	1F600	4

Decoding

Byte-sized groups that include high bytes are tried as UTF-8 first — which is how binary produced by byte-based converters decodes correctly here.

Every row is output from this page's converter.
Code	Base	Text	Read as
01010000 01110010 01101001 01110110 01100101 01110100	binary	Privet	code points
11010000 10011111 11010000 10111000	binary	Пи	UTF-8 bytes
D0 AF	hex	Я	UTF-8 bytes
42F	hex	Я	a code point
72 105	decimal	Hi	code points

What this calculator shows

Each character's code in the base you choose
The reverse conversion from code back to text
The character count and the size in UTF-8 bytes

What to keep in mind

Unicode code points are encoded rather than UTF-8 bytes. They coincide only in the ASCII range, U+0000–U+007F: 'é' is code point E9 but bytes C3 A9, and Cyrillic differs too.
When decoding, groups are separated by spaces or commas. Choose how to read them: Unicode code points, UTF-8 bytes or auto. Auto takes anything that reads as UTF-8 to be bytes, so it can guess wrong: the code points of 'Ã©' (C3 A9) come back as 'é'.

FAQs

How do I convert text to binary?

Take each character's code and write it in base two. A Latin A is 65, which is 01000001.

Why are Cyrillic codes longer?

Because Cyrillic letters are numbered above a thousand and do not fit in one byte: Я is 1071, eleven binary digits. In UTF-8 they take two bytes.

How does a code point differ from UTF-8 bytes?

A code point is the character's number in the Unicode table; UTF-8 is a way of writing that number as bytes. They coincide only for ASCII: 'é' is E9 against C3 A9, and Я is code point 42F but bytes D0 AF.

How do I decode binary?

Choose decode and paste the groups separated by spaces. Each group becomes a number and then a character; if the groups are UTF-8 bytes, they are read as UTF-8.

Why does another site's binary for Cyrillic look different?

A byte-based converter writes the UTF-8 bytes — П comes out as 11010000 10011111 — while this one writes the code point, 10000011111. Paste the byte version into decode and it is recognised as UTF-8.

What happens with an invalid group?

The tool stops and names it: '0102' is rejected as binary rather than quietly read as 010.

Worked example

Two Latin characters

Input: Hi into binary

Output: 01001000 01101001

Note: H is 72 and i is 105. Both are exactly eight bits, because Latin fits in a byte. A Cyrillic А is 1040, and its binary form already takes eleven digits.

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