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Hex to Decimal Converter

Convert hexadecimal numbers to decimal instantly. Perfect for everyone working with number systems and color codes.

Supports 0x prefix and # prefix
Quick examples:

Your decimal result will appear here...

📐 Step-by-Step Breakdown

Total:

💡 How to Use This Tool

Convert any hexadecimal number to decimal in seconds. Follow these simple steps:

1

Enter Hex Value

Type or paste your hexadecimal number. Supports 0x and # prefixes.

2

Click Convert

Press the "Convert to Decimal" button or hit Enter to convert.

3

View Result

Your decimal result appears instantly. Toggle "Show steps" for a breakdown.

4

Copy Result

Click "Copy" to copy the decimal result to your clipboard.

📖 About Hex to Decimal Converter

What is Hexadecimal?

Hexadecimal (hex) is a base-16 number system that uses 16 distinct symbols: 0-9 and A-F (or a-f). It's widely used in computing because it provides a human-friendly representation of binary-coded values.

How Hex to Decimal Conversion Works

Each hexadecimal digit represents 4 bits (a nibble). To convert hex to decimal, multiply each digit by 16 raised to the power of its position (starting from 0 on the right), then sum all the values.

Example: FF = (15 × 16¹) + (15 × 16⁰) = 240 + 15 = 255

Common Use Cases

  • Color Codes: Convert #FFFFFF to RGB values (255, 255, 255)
  • Memory Addresses: Debug memory locations in programming
  • MAC Addresses: Network hardware identification
  • Unicode Characters: Character code conversion
  • Assembly & Low-Level Programming: Working with processor instructions
  • Data Analysis: Interpreting raw data dumps

Privacy & Security

This tool runs entirely in your browser using JavaScript. Your data is never sent to any server—all conversion happens locally on your device.

Technical Details

  • Supports uppercase and lowercase hex digits (A-F, a-f)
  • Handles optional "0x" prefix commonly used in programming
  • Maximum safe integer limit: 9007199254740991 (2^53 - 1)
  • Validates input for proper hexadecimal format

❓ Frequently Asked Questions

Yes! All conversion happens locally in your browser using JavaScript. Your data never leaves your device and is not sent to any server.
JavaScript safely handles integers up to 2^53 - 1 (9007199254740991). The maximum safe hex value is 1FFFFFFFFFFFFF. For larger values, precision may be lost.
Yes! This converter automatically handles the common "0x" prefix used in programming languages like C, C++, Java, and JavaScript. You can enter "0xFF" or just "FF".
Hexadecimal uses 16 characters: digits 0-9 and letters A-F (or lowercase a-f). Each represents a value from 0 to 15. Any other characters are invalid.
Split the color code into three parts: FF (red), 57 (green), 33 (blue). Convert each separately: FF = 255, 57 = 87, 33 = 51. So #FF5733 is RGB(255, 87, 51).

Version History

1.0.0

Initial release

Jan 24, 2026