Free online tool

Hex Converter

Inspect the same value across bases and text encodings with explicit width and signedness.

Conversion stays in your browser

Use Hex Converter

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What this tool does

Convert hexadecimal, decimal, binary, octal, text, and bytes without integer truncation.

Method

Integer modes use arbitrary-precision arithmetic, while text mode encodes and decodes documented UTF-8 byte sequences with configurable grouping.

Example

Convert hexadecimal FF to decimal, binary, and an unsigned 8-bit representation.

Inputs and outputs

You provideYou receive
  • Input value
  • Source or detected base
  • Target bases
  • Signedness
  • Bit width
  • Text or bytes mode
  • Hexadecimal
  • Decimal
  • Binary
  • Octal
  • ASCII or UTF-8 bytes
  • Grouped value
  • Copy

Privacy and data use

Conversion stays in your browser. Values and text bytes are not uploaded.

Read the full privacy policy.

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Common questions

Is it free?

Yes. The core tool and its standard result or export are free to use.

Do I need an account?

No for the core utility. An account or private management token is requested only for capabilities that must persist, such as editable dynamic QR links.

Can I trust the result?

The method and assumptions are visible above. Time-sensitive tools name their sources and freshness; important financial, safety, legal, or operational decisions should be verified with the primary authority.