HEX ↔ ASCII / C array

Convert between hex and text, and generate a round-trippable uint8_t array.

Input

Pick text, HEX or a C array as input — get HEX, text, a paste-ready uint8_t array and a hexdump.

Input format

Text

Text encoding

In UTF-8 a CJK character takes 3 bytes; Latin-1 is one byte per character, handy for inspecting raw bytes.

Separator

HEX options

Array variable name

12 bytes

Result

HEX

48 65 6C 6C 6F 20 E6 B8 A9 E5 BA A6

Text

Hello 温度

C array

Paste it straight into C; paste this output back into the C array input to read it again.

const uint8_t buf[] = {
  0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0xE6, 0xB8, 0xA9, 0xE5, 0xBA, 0xA6,
};

Hexdump

00000000  48 65 6C 6C 6F 20 E6 B8  A9 E5 BA A6              |Hello ......|

Notes

Everything is computed locally in your browser — nothing is uploaded.

HEX and the C array always work on bytes; only the text view depends on the encoding.

The C array input mode parses a uint8_t array declaration copied straight out of your code, and ignores comments.

The hexdump follows the xxd layout: offset + 16 bytes per line + |printable ASCII|.