Online Text Binary Converter
Convert text to binary and back with UTF-8/ASCII and custom separators. 100% private, all processing in your browser
Frequently Asked Questions
Each character is encoded into bytes using the selected encoding (UTF-8 or ASCII), and every byte is rendered as an 8-digit binary string, separated by your chosen separator.
No. All conversion is done locally in your browser. Your text and binary never leave your device, fully protecting your privacy.
ASCII maps 128 characters to single bytes; UTF-8 is a variable-width encoding that covers all Unicode characters, so multilingual text and emoji require multiple bytes per character.
Separators make long binary strings readable. Choose space (most common), comma, dash, newline, or none for a continuous stream of bits.
Completely free. This is a pure frontend online tool - no registration required, no payment needed, just open and use.
When decoding, if the input contains digits other than 0 and 1, or the bit count is not a multiple of 8, an error message explains the problem so you can correct it.
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