About Text ↔ Binary

Convert UTF-8 text to 0/1 binary — or decode back. Part of the DevTools Surf developer suite. Browse more tools in the Encoding collection.

Use Cases

• CS students learning how text is represented in binary
• Embedded developers inspecting raw byte-level data encoding
• CTF players decoding binary-encoded challenge messages
• Teachers demonstrating character encoding fundamentals

Tips

• Each ASCII character maps to exactly 8 binary digits
• Toggle between encode and decode modes instantly
• Use spaces between bytes for readable binary output

Fun Facts

• The binary number system was formalized by Gottfried Wilhelm Leibniz in 1703, though he credited the ancient Chinese I Ching's hexagram system as inspiration.
• ASCII was first published as a standard in 1963 by the American Standards Association, defining 128 characters in 7-bit binary codes.
• Modern computers process binary at speeds exceeding 5 GHz — meaning over 5 billion binary operations per second on a single core.

FAQ

What encoding?

UTF-8 by default. Each Unicode character becomes its byte sequence, then each byte becomes 8 binary digits.

Separator between characters?

Configurable — space (common for readability), none (compact), newline (one byte per line). The decoder auto-detects.

Can I decode back?

Yes — paste binary, get text. Works regardless of the separator convention used in encoding.

What about non-UTF-8 encodings?

Toggle to UTF-16 or Latin-1. Most modern contexts use UTF-8; legacy systems (Windows-1252) need specific handling.