Is Hex Arithmetic free to use?

Yes, Hex Arithmetic is completely free with no registration required.

Is my data safe with Hex Arithmetic?

Yes. Most processing happens in your browser. Files uploaded for conversion are processed server-side and automatically deleted.

HEX +−×÷

Enter hexadecimal numbers without 0x prefix

Operand A (HEX)

Operand B (HEX)

Result width:

JSON Beautify & Validate

Beautify, minify, and validate JSON data.

JWT Decode & Verify

Decode, encode, and verify JSON Web Tokens.

8 Case Conversion Modes

Convert text between 8 different case formats.

Base64 String Decode

Decode Base64 encoded strings to plain text.

Text to Base64 Encode

Encode plain text to Base64 string online.