What characters are valid hex input?

Digits 0–9 and letters A–F (case-insensitive). The tool automatically strips leading "0x", "#", and whitespace, so you can paste raw addresses or CSS colors directly.

How many hex digits can I convert at once?

The tool handles up to 256 hex digits (128 bytes) at a time, which covers typical use cases like UUIDs, SHA-256 hashes, and short byte sequences.

Does each hex digit always produce exactly 4 bits?

Yes. Every single hex digit maps to exactly one nibble (4 bits), so 2 hex digits = 1 byte = 8 bits, and so on.

Can I convert binary back to hex?

This tool converts hex to binary only. Use the Binary to Hex tool for the reverse direction.

Is my data sent to a server?

No. All conversion happens in your browser using JavaScript. Nothing is transmitted or stored.

Hex to Binary Converter

Name: Hex to Binary Converter
Availability: InStock
Author: Nham Vu

Paste any hex string and instantly see each nibble expanded into 4-bit binary groups.

Hexadecimal Input

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Binary Output

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Summary

Paste any hex string and instantly see each nibble expanded into 4-bit binary groups.

How it works

Paste or type a hexadecimal string into the input field.
The tool strips any spaces, "0x" prefixes, and "#" prefixes automatically.
Each hex digit is expanded into its 4-bit binary equivalent.
Choose a grouping option — raw, nibble (4 bits), byte (8 bits), or word (16 bits).
Copy the result with one click or swap the input and output to reverse-convert.

Use cases

Inspect the bit pattern of RGB color hex codes.
Visualize memory addresses or register values in binary form.
Debug network packet bytes and protocol fields.
Verify data encoding in embedded or low-level programming.
Study bitwise operations by viewing the raw binary layout.
Convert hex constants from datasheets into binary for masking calculations.

Frequently Asked Questions

Last updated: 2026-06-09 · Reviewed by Nham Vu