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Binary to ASCII

Convert binary bytes to ASCII codes — bit patterns become decimal numbers.

100% Free No signup Privacy-friendly Binary & Number Tools
Updated Sep 2026

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How to use Binary to ASCII

  1. Paste binary groups separated by spaces — e.g. 01001000 01101001.
  2. Read the decimal codes instantly: 72 105.
  3. Look codes up as characters if needed (72 = H, 105 = i) — or use Binary to Text to get there in one step.
  4. Click “Copy result” for your worksheet, table or debug notes.

What is Binary to ASCII?

A binary to ASCII converter reads binary byte patterns and outputs their decimal character codes: 01001000 becomes 72 — the code for H. It answers "what number is this bit pattern?" in the character-code sense, the middle step between raw bits and readable text.

Keeping the decimal codes visible (rather than jumping straight to characters) is exactly what encoding homework, ASCII-table exercises and byte-level debugging ask for: you often need to show 01001000 → 72 → H with all steps written out.

About the Binary to ASCII

Paste binary groups separated by spaces and each converts to its decimal code instantly: 01001000 01101001 → 72 105.

Use it to fill in the middle column of encoding worksheets, to check byte values while debugging serial or protocol data where a scope or logger shows raw bits, or to work ASCII-table puzzles where answers are wanted as numbers. Tokens containing anything besides 0 and 1 are flagged by name. Values longer than 8 bits convert too — they're simply larger numbers, i.e. Unicode code points.

Everything runs live in your browser. ASCII to Binary reverses the direction; Binary to Text skips the numeric step and gives you characters directly.

Frequently Asked Questions

72 — add the place values of the 1s: 64 + 8. In ASCII that's the letter H.
Whenever the number itself is the answer: encoding homework that shows each step, checksum arithmetic, comparing byte values, or control characters (code 10 = newline) that have no visible symbol to print.
No — each space-separated group converts on its own, whatever its length. 1000001 and 01000001 both give 65; longer groups give correspondingly larger code points.
The tool flags the exact invalid token instead of guessing — binary only has 0 and 1, and a mistyped digit would otherwise corrupt every code after it.
As their codes: 00001010 → 10 (newline), 00001101 → 13 (carriage return), 00000000 → 0 (NUL). That's an advantage of decimal output — invisible characters get visible numbers.

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