Text ↔ Binary Converter
Encoders & DecodersBidirectional text-to-binary and binary-to-text converter. Convert any text to space-separated 8-bit binary groups and decode binary back to readable text instantly. Free, browser-based, no data sent to any server.
Plain Text
Binary
Binary uses space-separated 8-bit groups, e.g. 01001000 01100101
About Text ↔ Binary Converter
Convert text to binary and binary back to text with a single tool. Each character is represented as a space-separated 8-bit binary group. Paste binary on the right to decode, or type text on the left to encode — the conversion runs entirely in your browser.
Features
- ✓Bidirectional — encode text to binary and decode binary to text
- ✓Space-separated 8-bit output for easy reading
- ✓Handles letters, numbers, punctuation, and Unicode characters
- ✓Error feedback when the binary input is invalid
- ✓Copy either side to clipboard with one click
- ✓Load example binary string to get started instantly
- ✓100% client-side — nothing leaves your browser
Common Use Cases
- Learning how character encoding and binary representation work
- Inspecting bit patterns of ASCII and Unicode characters
- Encoding short text messages into binary for puzzles and CTF challenges
- Decoding binary strings found in documents or code
- Teaching binary data representation in computer science courses
Frequently Asked Questions
QHow does text to binary conversion work?
Each character is looked up by its Unicode code point (which equals the ASCII value for Basic Latin characters). That number is converted to an 8-bit binary string. For example, 'H' is code point 72, which is 01001000 in binary.
QWhy are there spaces between each binary group?
Spaces separate each 8-bit byte for readability. Without spaces, a long binary string is nearly impossible to read. The decoder expects the same space-separated 8-bit format.
QWhat formats does the binary decoder accept?
The decoder expects space-separated groups of exactly 8 binary digits (e.g. 01001000 01100101). Groups that are not exactly 8 bits will cause a validation error.
QDoes this work with Unicode or only ASCII?
Characters within the Basic Latin block (code points 0–127) map directly to single-byte binary groups. Extended Unicode characters may produce multi-byte values. For simplicity, this tool handles the common ASCII range used in most text-to-binary exercises.