MasterTool

Text to Binary Converter

Convert text to binary code — 8-bit groups for every byte — and see the matching decimal ASCII/byte codes and hex at the same time.

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What this tool does

Convert text to binary code — 8-bit groups for every byte — and see the matching decimal ASCII/byte codes and hex at the same time. English letters, digits and punctuation are single bytes equal to their ASCII codes (H = 72 = 01001000). Accented characters, symbols and emoji take 2–4 UTF-8 bytes each, so their decimal and hex rows show the full byte sequence.

How to use the Text to Binary Converter

  1. Enter or select text.
  2. Read the calculated result; change any measurement to compare alternatives.

Formula

The text is encoded to UTF-8 bytes; each byte is written in base 2 padded to 8 bits. The same bytes are also shown as decimal codes (the ASCII codes for English text) and as hexadecimal, folding the text-to-ASCII conversion into the same result.
text
Text

English letters, digits and punctuation are single bytes equal to their ASCII codes (H = 72 = 01001000). Accented characters, symbols and emoji take 2–4 UTF-8 bytes each, so their decimal and hex rows show the full byte sequence.

Worked example

For text to binary converter, the following measurements illustrate the exact method: Text: Hello.

Inputs

  • TextHello

Result

  • Binary01001000 01100101 01101100 01101100 01101111
  • ASCII / decimal byte codes72 101 108 108 111
  • Hexadecimal bytes48 65 6C 6C 6F
  • Bytes5

Results explained

Binary
Binary from the formula above. English letters, digits and punctuation are single bytes equal to their ASCII codes (H = 72 = 01001000). Accented characters, symbols and emoji take 2–4 UTF-8 bytes each, so their decimal and hex rows show the full byte sequence.
ASCII / decimal byte codes
ASCII / decimal byte codes from the formula above. English letters, digits and punctuation are single bytes equal to their ASCII codes (H = 72 = 01001000). Accented characters, symbols and emoji take 2–4 UTF-8 bytes each, so their decimal and hex rows show the full byte sequence.
Hexadecimal bytes
Hexadecimal bytes from the formula above. English letters, digits and punctuation are single bytes equal to their ASCII codes (H = 72 = 01001000). Accented characters, symbols and emoji take 2–4 UTF-8 bytes each, so their decimal and hex rows show the full byte sequence.
Bytes
Bytes from the formula above. English letters, digits and punctuation are single bytes equal to their ASCII codes (H = 72 = 01001000). Accented characters, symbols and emoji take 2–4 UTF-8 bytes each, so their decimal and hex rows show the full byte sequence.

Frequently asked questions

Type or paste the text and read the Binary row: each character becomes one or more 8-bit groups — H is 01001000, e is 01100101 — separated by spaces so the groups stay readable.

They are the same bytes written in base 10: for plain English text they are exactly the ASCII codes (A = 65, a = 97, space = 32), which is the text-to-ASCII conversion. The hex row shows the same bytes in base 16.

Emoji live far beyond the 128 ASCII characters, so UTF-8 stores them as four bytes. Each byte gets its own 8-bit group, and a binary-to-text decoder reassembles the four bytes into the single emoji.

ASCII is a table assigning numbers 0–127 to characters; binary is a way of writing numbers in base 2. 'Text to binary' usually means writing each character's ASCII (or UTF-8) number in binary — which is what this tool does.

Yes. Encoding runs in your browser; the text and its binary form are never uploaded or stored.