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Decimal to Hex Converter

Convert decimal numbers to hexadecimal instantly. Perfect for developers, programmers, and students working with number systems and color codes.

Enter a positive integer
Quick examples:

Your hexadecimal result will appear here...

📐 Step-by-Step Breakdown

Divide by 16 repeatedly and record remainders:

Result (read remainders bottom to top):

💡 How to Use This Tool

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

1

Enter Decimal Value

Type or paste your decimal number (e.g., 255, 65535).

2

Choose Options

Toggle 0x prefix, case, or step-by-step breakdown as needed.

3

Click Convert

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

4

Copy Result

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

📖 About Decimal to Hex Converter

What is Decimal to Hexadecimal Conversion?

Decimal to hexadecimal conversion transforms base-10 numbers (0-9) into base-16 numbers (0-9 and A-F). This is essential in computing where hex provides a more compact representation of binary data.

How the Conversion Works

To convert decimal to hex, repeatedly divide by 16 and record remainders. Read the remainders from bottom to top to get the hex value.

Example: 255 ÷ 16 = 15 remainder 15 → FF

Common Use Cases

  • Color Codes: Convert RGB(255, 87, 51) to #FF5733
  • Memory Addresses: Express memory locations in compact hex format
  • MAC Addresses: Format network hardware identifiers
  • Unicode Characters: Convert character codes to hex notation
  • Assembly Programming: Work with processor instructions
  • Debugging: Analyze binary data in readable format

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 positive integers and decimal input
  • Generates uppercase hex output (A-F)
  • Optional 0x prefix for programming use
  • Maximum safe integer: 9007199254740991 (2^53 - 1)
  • Step-by-step conversion breakdown available

❓ 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). For larger values, precision may be lost.
Yes! This converter includes an option to automatically add the "0x" prefix commonly used in programming languages like C, C++, Java, and JavaScript.
Hexadecimal uses 16 characters: digits 0-9 and letters A-F (or lowercase a-f). Each represents a value from 0 to 15.
Convert each RGB component separately: 255 = FF, 87 = 57, 51 = 33. Combine them to get #FF5733.