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Convert text to binary, hex, decimal or octal — and back.
Conversion is UTF-8 aware: each character is encoded to its UTF-8 bytes (1–4 per character), so emoji and non-Latin scripts round-trip exactly. One byte = 8 bits, 2 hex digits, 3 octal digits, or a decimal value 0–255.
Translate text to binary, hexadecimal, decimal, or octal byte codes and decode them back to plain text. Fully UTF-8 aware, so emoji and non-Latin scripts round-trip perfectly. Choose your delimiter, group binary into 4-bit nibbles, and copy or download the result. The forgiving decoder accepts 0x/0b prefixes and ignores stray whitespace. Runs entirely in your browser.
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