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String to Binary Converter

Convert text to 8-bit binary and back. UTF-8 aware with optional byte and nibble spacing for readability.

Free No signup Client-side Privacy friendly

How to use

  1. 1 Pick Text → Binary or Binary → Text.
  2. 2 Toggle the spacing options for readability.
  3. 3 Paste your input. Decode ignores whitespace and validates an 8-bit length.
  4. 4 Copy the result.

Why use this tool

  • UTF-8 aware — multi-byte characters encode to multiple 8-bit groups.
  • Optional nibble spacing makes long output easier to read.
  • Decode tolerates any whitespace pattern — paste tightly-packed or spaced binary.
  • Pure browser logic, zero dependencies.

Frequently asked questions

Why does an emoji become 32 bits?

UTF-8 encodes most emoji as 4 bytes — 4 × 8 = 32 bits. Latin characters fit in one byte (8 bits).

My binary input says "not a multiple of 8" — why?

Text decoding requires whole bytes. Each character is at least 8 bits. Re-pad short groups with leading zeros, or check the input for missing digits.

Does it support 7-bit ASCII grouping?

No — output is always 8-bit groups for round-trip safety with UTF-8. 7-bit ASCII is a strict subset of 8-bit (top bit zero), so 7-bit data round-trips anyway.

Need hex instead of binary?

Use our String to Hex Converter — text to UTF-8 hex bytes with separator options.

Summary

String to Binary Converter is a free developer utility by Zerethon Tools. Convert text to 8-bit binary and back. UTF-8 aware with optional byte and nibble spacing for readability. Runs entirely in the browser — no signup, no upload.

Category
Developer
Pricing
Free
Privacy
Browser-based
Signup
Not required

Privacy

Your data never leaves your browser unless explicitly stated. String to Binary Converter runs entirely client-side — no server upload, no logging, no tracking of your input.

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