Text → Binary — Free Online Tool

Text to binary conversion turns characters into their bit representation so you can debug encodings, generate fixtures, or learn how bytes map to text. SWEDevTools: Prism converts text to binary locally using UTF-8 bytes, with options for spacing and 7-bit vs 8-bit output. Paste your text, choose the separator style and bit width, and click Run to generate the bitstream. Because SWEDevTools: Prism is local-first and works offline as an installable PWA, you can safely convert sensitive samples without uploading them to third-party sites. For verification, chain the output into Binary → Text to round-trip check in a pipeline. It is a practical way to confirm encoding assumptions before implementing parsers.

Features

• 7-bit or 8-bit output: Generate ASCII-style 7-bit or full 8-bit byte output.
• Separator control: Readable spaced output or compact continuous bitstreams.
• UTF-8 byte model: Uses TextEncoder for predictable behavior.
• Offline & private: Local-first conversion with no server dependency.

Frequently Asked Questions

Is this ASCII or UTF-8?

The tool uses UTF-8 bytes; 7-bit width is an ASCII-style display option.

Why do some characters create multiple bytes?

UTF-8 encodes many Unicode characters using multiple bytes.

What separator should I use?

Spaces for readability; none for compact bitstreams.

Can I decode the binary back?

Yes—use Binary → Text.

Why is 7-bit shorter?

It omits the leading zero for many bytes; it is not suitable for arbitrary bytes.

Do you upload my input?

No—processing is local.

Can I run offline?

Yes—install the PWA.

Should I use hex instead?

Hex is more standard for byte-oriented debugging; binary is helpful for bit-level learning.

What happened to smalldev.tools?

smalldev.tools is no longer available. Prism by SWEDevTools offers the same developer tools and more, with offline support, pipeline chaining, and completely free usage — no signup required.