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Hex to Decimal Converter

Enter a hexadecimal number to instantly get its decimal, binary, and octal equivalents.

Last updated: May 30, 2026

Client-Side Processing
Input Data Stays on Device
Instant Local Execution

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What is Hex to Decimal Converter?

Hexadecimal (base 16) is the number system most commonly used by developers to represent binary data in a compact, human-readable form. It uses digits 0–9 and letters A–F, where A = 10, B = 11, ..., F = 15.

To convert hex to decimal, multiply each digit by 16 raised to its positional power (starting from the right at 0) and sum the results. For example, 1A3: - 1 × 16² = 256 - A (10) × 16¹ = 160 - 3 × 16⁰ = 3 Total: 256 + 160 + 3 = 419

How to Use Hex to Decimal Converter

1

Type or paste a hexadecimal value in the input field (with or without the 0x prefix).

2

The decimal, binary, and octal outputs update in real time.

3

Click any copy button to copy the result to your clipboard.

4

Click "Load Sample" to see an example.

Common Use Cases

  • Converting hex color codes to decimal RGB component values.
  • Reading memory addresses in debuggers and converting them to decimal offsets.
  • Interpreting hex values in web API responses or database hex-encoded fields.
  • Number system coursework and CompTIA/CCNA certification preparation.

Example Input and Output

The hex value 1F4 converts to decimal 500 (256 + 15×16 + 4).

Hexadecimal
1F4
Decimal
500

Data Privacy

All conversions run entirely in your browser. No data is sent to any external server.

Frequently Asked Questions

Are hex letters case-sensitive?
No. The converter accepts both uppercase (A–F) and lowercase (a–f) hex digits interchangeably.
What does the 0x prefix mean?
The 0x prefix is a C/C++ and many-language convention for denoting hexadecimal literals, distinguishing them from decimal numbers. This tool accepts values with or without it.
Can this convert very large hex values?
Yes. The tool uses JavaScript's BigInt for arbitrary-precision arithmetic, so there is no practical size limit.

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