ZeroTool Workbench

Text to Binary Converter

Convert text to binary 0s and 1s online, or decode binary back to UTF-8 text. Supports ASCII, Unicode, spaced binary, and continuous binary. 100% client-side.

100% Client-Side Your data never leaves your browser Free · No Sign-Up

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Text to Binary Converter Online

Convert plain text into binary 0s and 1s instantly, then decode binary back to readable text. The converter uses UTF-8, so it handles ASCII letters, numbers, punctuation, accented characters, CJK text, and emoji.

  • Text → Binary: turn each UTF-8 byte into an 8-bit binary group.
  • Binary → Text: paste spaced or continuous binary and decode it back to text.
  • Private by design: conversion runs locally in your browser; input is not uploaded.

How to Use

  1. Type or paste text in the Text panel — the binary output updates automatically.
  2. To convert binary back to text, paste binary into the Binary panel and click Binary → Text.
  3. Choose Spaced or Continuous format for the binary output.
  4. Use the Copy buttons to copy either panel to your clipboard.

Binary Representation

Each character is encoded as one or more bytes. Each byte is represented as an 8-bit binary number.

H = 01001000
e = 01100101
l = 01101100
o = 01101111

“Hello” in spaced binary: 01001000 01100101 01101100 01101100 01101111

Tips

  • Multi-byte UTF-8 characters (like emoji 😀 = U+1F600) produce four 8-bit groups.
  • Use Base64 for a more compact text-safe encoding.
  • Use ASCII Converter to work with decimal, hex, and octal values.

FAQ

How do I convert text to binary?

Type or paste text into the Text panel. The converter encodes it as UTF-8 bytes and displays each byte as an 8-bit binary value such as 01001000. You can choose spaced or continuous output.

What encoding does the converter use?

The tool uses UTF-8 encoding, which supports all Unicode characters including ASCII, accented letters, CJK characters, and emoji.

What binary input formats are accepted?

Both space-separated (e.g. 01001000 01100101) and continuous (e.g. 0100100001100101) binary strings are accepted when converting binary to text.

Can I convert emoji and Unicode characters?

Yes. UTF-8 encodes multi-byte characters, so emoji and CJK characters may produce more than one 8-bit group per character in the binary output.

Is any data sent to a server?

No. All conversion runs entirely in your browser using the built-in TextEncoder and TextDecoder APIs. Nothing is uploaded or transmitted.

Why must the binary length be a multiple of 8?

Each character byte is represented by exactly 8 bits. If the total bit count is not divisible by 8, the binary string is incomplete or malformed.