How is text converted to binary?

The text is first encoded as UTF-8 bytes, then each byte is written as its 8-bit binary value padded with leading zeros. Bytes are separated by spaces so the boundaries are easy to read.

Why do emoji and accented letters produce more bytes than characters?

UTF-8 is a variable-length encoding. Plain ASCII letters take one byte, but accented Latin letters take two and most emoji take four. The tool encodes UTF-8 first, so the byte count reflects the real on-the-wire size rather than the character count.

How are the random bytes generated?

When your browser supports it the tool uses crypto.getRandomValues, the cryptographically secure random source, so the output is suitable for nonces and test keys. It falls back to Math.random only if that API is unavailable.

What is base64 used for?

Base64 represents arbitrary bytes using 64 printable characters, which lets you embed binary data in text-only contexts such as JSON, data URLs, and email. It is encoding, not encryption, so it provides no secrecy.

Does my text get sent anywhere?

No. Encoding and random generation run entirely in your browser using the built-in TextEncoder and crypto APIs, so nothing you type leaves the page.

Binary/Hex Encoder — Gera Tools

This tool converts text into three common encodings at once — 8-bit binary, hexadecimal, and base64 — and can also generate random byte strings in the same formats. It handles full UTF-8, so accented characters and emoji are encoded as their real multi-byte sequences rather than guessed.

How it works

Text is first turned into bytes with the browser’s TextEncoder, which produces a UTF-8 byte sequence. Those bytes then drive each representation:

Binary writes every byte as 8 bits, zero-padded, separated by spaces.
Hexadecimal writes every byte as two hex digits.
Base64 packs the bytes into groups of three and maps each group to four printable characters using the standard alphabet.

In random mode the tool fills a byte array with crypto.getRandomValues when available — the cryptographically secure generator — and renders those bytes in all three encodings.

Tips and notes

The byte count shown above the results is the true UTF-8 size; a single emoji often counts as four bytes.
Hex is the most compact human-readable form; binary is the most explicit; base64 is best for embedding bytes inside JSON or URLs.
Base64 is an encoding, not encryption. Anyone can decode it, so never use it to hide secrets.