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Enter text or binary and click Convert// convert text ↔ binary in one click
Convert text to binary code and binary back to text instantly. Free browser-based tool — no upload, no sign-up. Supports ASCII, UTF-8, custom delimiter.
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Enter text or binary and click ConvertChoose TEXT → BINARY to encode, or BINARY → TEXT to decode.
Type or paste your text (or binary string with 0s and 1s).
Click Convert, then copy the output with one click.
This tool converts any text string into its binary representation — a sequence of 8-bit groups (one byte per character). Each character is encoded using its UTF-8 byte values, displayed as 0s and 1s. The reverse mode decodes binary back to readable text.
Binary encoding represents data as sequences of 0s and 1s. Every character is mapped to its numeric value (using ASCII or UTF-8), then that number is expressed in base-2 (binary). For example, the letter "A" is 65 in decimal, which becomes 01000001 in 8-bit binary.
Yes. The encoder uses UTF-8 byte encoding, so characters outside basic ASCII (like accented letters, Chinese, Arabic, emoji) are correctly encoded into multiple bytes. Each byte is shown as an 8-bit group.
Space is the most readable and most common format. "None" produces a compact continuous stream, useful when you know the length in bytes. Dash and comma are common in CTF challenges and data transfer formats.
Yes. The decoder automatically detects and strips common delimiters (space, dash, comma, newline) before parsing. As long as each byte group is exactly 8 binary digits, the decoder will work correctly.
UTF-8 uses 1 byte for standard ASCII characters (0–127) and 2–4 bytes for characters outside that range. So an emoji or Chinese character will produce multiple 8-bit groups in the output — this is correct and expected behavior.
The tool supports up to 50,000 characters for encoding and 50,000 bytes for decoding. This is more than enough for typical use. For extremely large files, a local script would be more appropriate.
All processing happens client-side in your browser via JavaScript. No data is uploaded or stored. The tool also includes a PHP API fallback, but by default the conversion runs entirely in your browser for maximum privacy.
For the 128 standard ASCII characters (letters, digits, punctuation), ASCII and UTF-8 produce identical binary output. UTF-8 extends this to cover all Unicode characters using multibyte sequences. This tool uses UTF-8 to ensure full Unicode support.
Binary encoding is one of the most fundamental concepts in computing. Every piece of data your computer processes — every letter you type, every image you view, every sound you hear — is ultimately stored and transmitted as a sequence of 0s and 1s. Our free Text to Binary Converter makes it easy to see this encoding in action, letting you convert any text string into its binary representation instantly, and decode binary back to readable text with equal ease.
When you type a character on your keyboard, your computer doesn't actually store the letter itself — it stores a number. The most widely used encoding standard is UTF-8, which is a superset of the original ASCII standard. In UTF-8, every character is assigned a unique numeric value called a code point. For example:
A has a code point of 65a has a code point of 97! has a code point of 33Once we have the numeric value, we convert it to base-2 (binary). The number 65 in binary is 1000001. Since computers work with fixed-width bytes (8 bits), we pad that to 8 digits: 01000001. That's the binary representation of "A".
To convert a full string, we repeat this process for each character, then join the 8-bit groups using your chosen delimiter — a space, dash, comma, or nothing at all.
The original ASCII standard only covered 128 characters — enough for English text, digits, and basic punctuation. Modern text, however, includes thousands of characters from dozens of scripts: accented letters, Chinese, Japanese, Arabic, emoji, and more. UTF-8 handles this by encoding these extended characters using 2, 3, or 4 bytes instead of 1.
For example, the euro sign € is encoded as 3 bytes in UTF-8: 11100010 10000010 10101100. An emoji like 😀 uses 4 bytes. Our converter correctly handles all of these, producing the proper multi-byte binary output for any Unicode character you enter.
When decoding, the tool reassembles the bytes and interprets them as UTF-8, recovering the original text faithfully — including any multibyte characters.
The delimiter is the separator placed between each 8-bit byte group. Your choice doesn't affect the underlying data — only how the output looks:
01001000 01100101 01101100 01101100 01101111010010000110010101001000-0110010101001000,01100101When decoding binary, our tool automatically detects and handles any of these delimiters, so you don't need to worry about which one was used in the source data.
Binary encoding and decoding has many practical applications:
Binary (base-2) is the most fundamental encoding, but it produces very long output — every character becomes at least 8 characters (the 0s and 1s). For practical data transmission, more compact encodings are often preferred:
Binary remains important because it directly reflects how data is physically stored in memory and transmitted over hardware. It's the closest representation to what the machine "actually sees."
Our Text to Binary Converter is fast, private, and works entirely in your browser. There's no sign-up, no file upload, and no data ever leaves your device. It supports the full Unicode character set, handles custom delimiters, and provides instant feedback with byte counts so you always know exactly what you're working with. Whether you're a student learning about data encoding, a developer debugging a protocol issue, or a puzzle enthusiast solving a CTF challenge, this tool gives you everything you need in one clean, distraction-free interface.