BBuildQuill
Developer Tools

Reverse Hex

Reverse the byte order of hex strings. Convert between big-endian and little-endian formats.

How to Use Reverse Hex

1

Enter hex value

Type or paste a hex string. It must have an even number of hex digits.

2

Click Reverse

Click the Reverse button to swap the byte order.

3

Copy result

Click Copy to save the reversed hex string to your clipboard.

About the Reverse Hex Tool

Reverse the byte order of hex strings. Convert between big-endian and little-endian formats. This free online reverse hex from BuildQuill runs entirely in your browser. No data is sent to any server, keeping your information private. No signup or installation needed.

  • Free to use with no account required
  • Works in all modern browsers
  • All processing happens locally in your browser
  • Part of BuildQuill's developer tools collection

Frequently Asked Questions

What is hex byte reversal?
It reverses the order of bytes (pairs of hex characters) in a hex string. For example, AABBCCDD becomes DDCCBBAA. This is commonly needed when converting between big-endian and little-endian byte orders.
When do I need to reverse hex bytes?
When working with network protocols, binary file formats, or CPU architectures that use different endianness. Intel x86 uses little-endian, while most network protocols use big-endian.
Does this reverse individual characters or byte pairs?
It reverses byte pairs (two hex characters at a time). For example, AB CD EF becomes EF CD AB, not FE DC BA.

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