How do I convert hex to binary?

Each hex digit (0–9, A–F) represents 4 binary bits. For example, 7C hex = 0111 (7) followed by 1100 (C) = 01111100 binary. Paste or type hex into this tool to see all bits instantly, up to 8 bytes.

如何将十六进制转换为二进制？

每个十六进制数字（0–9、A–F）对应 4 个二进制位。例如 7C = 0111 + 1100 = 01111100。在本工具中输入 hex 即可查看最多 8 字节的完整二进制展开。

What is the difference between MSB and LSB?

MSB (Most Significant Byte) carries the highest-weight bits; LSB (Least Significant Byte) carries the lowest-weight bits. In this tool, B0 is the LSB and B7 is the MSB when 8 bytes are selected. Bit 0 is the LSB within a byte; bit 7 is the MSB within a byte.

Why use an 8-byte hex calculator?

Eight bytes (64 bits) match common data widths in embedded systems, CAN FD payloads, 64-bit registers, UUIDs, and memory dumps. An interactive bit view helps debug masks, flags, and protocol fields without manual conversion.

Hex to Binary Converter | 十六进制二进制转换器

Hex Input · 十六进制输入

Up to 8 bytes (16 hex digits). Spaces optional.

1 byte · 8 bits · 点击下方二进制位可翻转 0/1

Bytes:

Binary View · 二进制视图

Click any bit to toggle · 16 bits per row · 点击位翻转

B000

B0 (MSB) bit7↑ … ↓ B0 bit0 · 每 4 bit 分组，中间竖线分隔前后 8 bit

Raw: —

Free Hex ↔ Binary Converter (8 Bytes)免费十六进制 / 二进制互转工具（最多 8 字节）

This hex to binary converter lets you type up to 8 bytes of hexadecimal, see every bit laid out visually, and click any bit to flip between 0 and 1 — the hex value updates instantly. It is built for firmware engineers, embedded developers, and anyone debugging protocol fields, register masks, or memory dumps.

这款十六进制 / 二进制转换器支持最多 8 字节输入，以可视化方式展开每一位，点击即可翻转 0/1，hex 值同步更新。适用于固件开发、嵌入式调试、协议字段与寄存器掩码分析。

Hexadecimal & Binary Basics十六进制与二进制基础

Binary (base-2) uses only 0 and 1. Each position is a power of two. Hexadecimal (base-16) uses 0–9 and A–F; each hex digit compresses exactly 4 bits (one nibble). Two hex digits form one byte (8 bits).

二进制只有 0 和 1，每位代表 2 的幂。十六进制使用 0–9 与 A–F，每个 hex 数字对应 4 个二进制位（一个 nibble），两个 hex 数字组成 1 字节（8 bit）。

Example · 示例

Hex	7C
Binary	0111 1100
Decimal	124

7 → 0111 · C → 1100 · grouped as two nibbles for readability

Byte, Nibble & Bit Numbering字节、半字节与位编号

Terms

Nibble — 4 bits (one hex digit)
Byte — 8 bits (two hex digits)
Word — 16 bits (this tool shows 16 bits per row)
B0 — LSB byte (lowest); B7 — MSB byte (highest) in 8-byte mode
Within a byte: bit 7 = MSB (left), bit 0 = LSB (right)

术语

Nibble（半字节） — 4 bit，对应 1 个 hex 数字
Byte（字节） — 8 bit，对应 2 个 hex 数字
Word（字） — 16 bit，本工具每行显示 16 bit
B0 为最低字节，8 字节模式下 B7 为最高字节
字节内 bit 7 为高位（左），bit 0 为低位（右）

How to Use This Tool使用说明

Select 1–8 bytes with the byte-count buttons.
Type hex (e.g. 7C, 00 7C, or 0x7C).
Read the binary grid — 16 bits per row, grouped by nibbles.
Click any bit to toggle; hex updates automatically.
Use Copy to export hex.
Clear resets to zero while keeping the current byte count.

用 Bytes 按钮选择 1–8 字节。
输入 hex（如 7C、00 7C、0x7C，支持空格与 0x 前缀）。
在二进制区查看，每行 16 bit，每 4 bit 分组。
点击任意位翻转 0/1，hex 自动同步。
点 Copy 复制 hex 字符串。
Clear 清零但保持当前字节数不变。

Common Use Cases常见应用场景

Register bit masks — flip individual flags and copy the resulting hex
CAN / serial protocols — inspect 8-byte frames field by field
UUIDs & 64-bit IDs — visualize all 64 bits at once
Teaching & learning — see how hex maps to binary without hand calculation

寄存器位掩码 — 翻转标志位并复制结果 hex
CAN / 串口协议 — 逐字段查看 8 字节数据帧
UUID / 64 位 ID — 一次查看全部 64 bit
教学演示 — 直观理解 hex 与二进制的对应关系

Frequently Asked Questions

Does bit 0 mean the leftmost or rightmost bit?: In this tool, bit 0 is the LSB (rightmost within a byte). Bit 7 is the MSB (leftmost). Global bit numbers run from bit 0 (B0 LSB) to bit 63 (B7 MSB) in 8-byte mode.
bit 0 在左边还是右边？: 本工具中 bit 0 为最低位（字节内靠右），bit 7 为最高位（靠左）。8 字节模式下全局编号从 bit 0 到 bit 63。
Why does Clear leave the input box empty when all bytes are zero?: All-zero bytes are shown as an empty hex field for cleaner editing, but the binary grid still displays the full byte count with every bit set to 0.

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