Text to Binary Converter

Text to Binary

Use this text to binary converter to translate words, letters, numbers, and symbols into UTF-8 bytes displayed as groups of 0s and 1s. A character is not always one byte: ASCII-range text uses one byte per character, while other Unicode characters may use several. If you want the full background, our guide on how to convert text to binary walks through every step by hand.

Example: Hello → 01001000 01100101 01101100 01101100 01101111

Converting text to binary follows four steps, which the tool performs automatically as you type:

1. Read the Unicode scalar values in the text (for ASCII "H", the value is U+0048 or decimal 72)
2. Encode those values as UTF-8 bytes; ASCII-range values retain the same numeric value
3. Render every byte as eight base-2 digits (72 becomes 01001000)
4. Join each byte with a space, comma, or no separator

For example: Hi → 72, 105 → 01001000 01101001

Binary to Text

Switch to the Binary to Text tab to decode binary groups back into readable text. The converter accepts spaced binary bytes like 01001000 01100101 and continuous 8-bit groups like 0100100001100101.

Binary to text conversion follows three steps:

1. Split the binary string into 8-bit bytes (a UTF-8 character may span 1–4 bytes)
2. Convert each binary group to its decimal equivalent (see binary-to-decimal conversion to do this by hand)
3. Map each decimal value to its corresponding character using UTF-8 decoding

For example: 01001000 01101001 → 72, 105 → "Hi"

ASCII vs UTF-8 vs bytes

Unicode code points identify characters; an encoding maps those values to bytes; binary is one way to display each byte. ASCII is a 7-bit repertoire. UTF-8 preserves ASCII values and uses one to four bytes for Unicode scalar values.

Try any row in both directions: enter the text in Text to Binary, then paste its binary bytes into Binary to Text. The decoder rejects incomplete bytes and malformed UTF-8 instead of silently replacing data.

Primary references: IETF RFC 20 (7-bit ASCII), IETF RFC 3629 (UTF-8), Unicode Standard 17, Chapter 3, and WHATWG Encoding / TextEncoder. Examples were independently asserted in automated tests on 17 July 2026.

0 and 1 Translator

A 0 and 1 translator is a binary translator for people who want to convert normal text into binary digits or decode binary digits back into text. Binary is a base-2 number system using only two digits: 0 and 1. Every piece of data your computer processes, from text messages to streaming video, is ultimately stored and transmitted as sequences of binary digits (bits). To understand why, read what binary code is and how machines use it.

In text encoding, each character is assigned a numeric value, which is then represented in binary. For example, the letter "A" is 65 in decimal, which translates to 01000001 in binary. This binary translator handles the conversion instantly in your browser.

Supported Number Systems

Beyond binary, this tool converts between multiple number systems commonly used in programming and computer science:

• Decimal (Base-10): The standard number system (0–9). Each ASCII character maps to a decimal value (A=65, Z=90, a=97).
• Hexadecimal (Base-16): Uses digits 0–9 and letters A–F. Compact representation — every byte is two hex digits (A=41, Z=5A). See binary vs hexadecimal for when to use each.
• Octal (Base-8): Uses digits 0–7. Common in Unix file permissions and some legacy systems (A=101, Z=132).

Working with negative numbers? Learn how computers store them with signed binary and two's complement.

Common Uses for Text-to-Binary Conversion

Converting text to binary is more than an academic exercise. Here are the most common reasons people reach for a binary translator:

• Computer science classwork: Students convert their name or a sentence to binary to learn how characters, bytes, and place value work in a base-2 system.
• Binary puzzles and ciphers: Escape rooms, geocaching, CTF challenges, and ARGs frequently hide messages as strings of 0s and 1s that need decoding back to text.
• Debugging byte data: Developers inspect the exact bits of a character or control code when troubleshooting encoding bugs, serial protocols, or file formats.
• Encoding and ASCII art: Hobbyists encode hidden notes, watermarks, or playful messages in binary inside documents, images, or chat.
• Teaching place value: Educators use the byte view to demonstrate how eight bits represent 256 possible values while distinguishing bytes from characters.
• Quick reference checks: Anyone verifying a single byte (like confirming that "A" is 01000001) can paste the character and read the result instantly.