Text to binary
Plain text
Hi
Binary
01001000 01101001
Binary Text Translator
Convert plain text to spaced 8-bit UTF-8 binary—or decode bit strings back to readable characters with live validation and byte stats.
Binary Text Translator
Encode UTF-8 bytes as binary or decode spaced bit groups back to text.
Plain text or binary string
Binary or decoded text
Input: 0 chars
Output: 0 chars
Bytes: 0
Bits: 0
Invalid groups: 0
Status: ready
Your text stays in your browser — nothing is uploaded.
How to Use
- Choose Text to Binary or Binary to Text, then pick 8-bit or 7-bit ASCII mode.
- Set byte spacing (spaces between groups or continuous output) and optional line-break preservation.
- Paste plain text or spaced 8-bit binary groups like
01001000 01101001. - Use Swap ↔ to verify round-trip encoding, then copy or download the result.
Example
Text
Hi
8-bit binary (UTF-8)
01001000 01101001
Before and After Examples
Binary to text
Binary
01000001
Plain text
A
Word gap
Plain text
OK
Binary
01001111 01001011
Number conversion
Plain text
123
Binary
00110001 00110010 00110011
Emoji / multibyte
Plain text
😀
Binary (4 UTF-8 bytes)
11110000 10011111 10011000 10000000
Invalid binary
Input
0102 01101001
Result
Error — only 0 and 1 are allowed
Binary Reference
Each character maps to one or more 8-bit UTF-8 bytes. ASCII letters and digits use a single byte.
Uppercase A–C
-
A → 01000001
B → 01000010
C → 01000011
Lowercase a–b
-
a → 01100001
b → 01100010
Digits & space
-
0 → 00110000
1 → 00110001
Space → 00100000
Binary Examples
Hi
01001000 01101001
Hello
01001000 01100101 01101100 01101100 01101111
A
01000001
Space
00100000
123
00110001 00110010 00110011
What This Tool Does
The binary text translator encodes each UTF-8 byte as an eight-digit binary number and decodes spaced or continuous bit groups back into readable text. Live validation flags invalid characters, short byte groups, and bit counts that are not divisible by 8.
ASCII vs UTF-8
ASCII
Uses one byte for basic English letters, digits, and common symbols (codes 0–127).
UTF-8 compatibility
UTF-8 also uses one byte for ASCII characters—the same binary patterns you see for A, 1, and space.
Multibyte characters
Non-English letters and emoji can use two, three, or four bytes each in UTF-8.
Why emoji expands
A single 😀 produces four 8-bit groups because UTF-8 stores it as four bytes—not one byte like the letter A.
How Text Becomes Binary
Character
Each letter, digit, or symbol has a numeric code assigned by Unicode.
Byte
One byte usually contains 8 bits—a string like
01000001for the letter A.UTF-8
Non-English characters may use multiple bytes, each shown as its own 8-bit group.
Spaces
Spaces are encoded like any other character—
00100000in UTF-8.Emoji
Emoji usually create multiple byte groups because their Unicode code points need more than one byte.
Common Uses
Computer science lessons
Encoding demonstrations
CTF puzzles
Debugging byte data
Binary art
Escape room clues
UTF-8 learning
Classroom activities
Popular Workflows
Notes & Limitations
All conversion runs locally in your browser. 7-bit ASCII mode truncates bytes above 127. This tool displays binary text—it does not play tones or render binary images.
Frequently Asked Questions
Must binary bytes be space-separated?
No. Decoding accepts spaced groups like 01001000 01101001 or continuous strings like 0100100001101001 when Group by byte is enabled.
What is 8-bit binary?
Each byte is eight binary digits (bits), from 00000000 to 11111111. This tool pads each UTF-8 byte to eight bits when encoding.
What is ASCII?
ASCII is a character set where English letters, digits, and common symbols map to numbers 0–127, each storable in one byte.
What is UTF-8?
UTF-8 is a Unicode encoding that uses one byte for ASCII characters and multiple bytes for emoji, accented letters, and scripts beyond English.
Why do emoji create many bytes?
Emoji code points are large Unicode numbers. UTF-8 stores them as several bytes, so one 😀 becomes four 8-bit binary groups.
What happens with invalid binary?
Characters other than 0, 1, spaces, and line breaks trigger a friendly error. Incomplete bit groups show a warning when validation is on.
Can I decode binary back to text?
Yes. Select Binary to Text, paste your bit groups, and the decoded UTF-8 string appears instantly. Use Swap ↔ to reverse direction.
Does this support non-English characters?
Yes. The tool uses UTF-8 encoding, so accented letters and many scripts work—they may produce multiple byte groups per character.
Is my text uploaded?
No. All encoding and decoding runs locally in your browser—nothing is sent to a server.
Can I download the result?
Yes. Click Download .txt to save the output panel contents as a plain-text file.