Binary, text and ASCII converter
Convert text to binary or ASCII codes and back. UTF-8 safe; runs in your browser.
Runs 100% in your browserHow to convert binary and text
- Choose a direction. Text→Binary, Binary→Text, Text→ASCII or ASCII→Text.
- Enter your data. Type or paste; the result updates live.
- Copy the result. Grab the output.
About binary and ASCII
Under the hood, text is bytes. Seeing those bytes as binary bits or decimal ASCII codes is useful for learning how encoding works, debugging low-level protocols, or solving puzzles and CTF challenges. This converter treats text as UTF-8, so it round-trips international characters and emoji correctly, not just plain ASCII.
Frequently asked questions
- Text is encoded as UTF-8 bytes, and each byte is shown as 8 bits. So ASCII characters are one 8-bit group and emoji or accented characters become several.
- The ASCII (decimal) modes show the numeric code point of each UTF-8 byte, space-separated — e.g. "Hi" → "72 105".
- Binary decoding accepts 8-bit groups separated by spaces or not; ASCII decoding accepts space- or comma-separated numbers. Whitespace is ignored.
- Yes — conversion runs entirely in your browser.