Decimal to Hex Converter

What Is the Decimal to Hex Converter?

This online converter turns a decimal number into hexadecimal.

Use it to convert decimal to hex fast.

Decimal is base 10.

Hexadecimal is base 16.

Hex digits run from 0 to 9 and A to F.

The tool shows a 0x prefix before the hex value.

For example, 0x10 equals 16 in decimal.

The letter A in hex equals 10 in decimal.

Why Use This Tool?

You get quick, consistent results for decimal to hex tasks.

It suits coding and study and everyday checks.

The output uses uppercase letters for a clear format.

Press Enter to convert faster when you input many values.

How It Works

There is one input called Decimal Number.

Type a whole number in base 10 in that field.

Click Convert to Hex or press Enter to run the conversion.

The Hexadecimal line shows the result like 0x1A or 0xFF.

Negative input uses two's complement with 32 bit width.

Two's complement is a common way to store negative numbers.

So minus one becomes 0xFFFFFFFF in the output.

For blank input the tool asks for a number.

For invalid input the tool shows an error message.

The converter reads only the whole number part of any decimal.

For 12.7 it converts 12 and ignores the fraction.

Step-by-Step Instructions

Steps to Convert

1. Click the Decimal Number field.

2. Enter a whole number in base 10.

3. Add a minus sign if the value is negative.

4. Press Enter or click Convert to Hex.

5. Read the Hexadecimal line for a result like 0xFF.

6. Copy the hex value for your task.

Benefits of Using Decimal to Hex

It saves time for quick checks and everyday code work.

The format stays consistent with 0x and uppercase letters.

Support for negative values helps with low level tasks.

Results appear next to Hexadecimal for easy reading.

Notes and limits:

• Works with integers, including negative values.
• Uses two's complement for negative values at 32 bit width.
• Ignores any fractional part of a number.
• Outputs uppercase hex with a 0x prefix.
• Very large integers can lose precision in a browser.

Get in on the Action

Try the converter for your next decimal to hex task.

It fits quick tests and learning sessions and daily work.

• Red green blue color values, for example 255 becomes 0xFF for a pair.
• Debugging memory and byte values in code.
• Learning base 10 to base 16 mapping in class.
• Preparing data for machine level tools.

Example in Action

10 converts to 0xA.

16 converts to 0x10.

255 converts to 0xFF.

256 converts to 0x100.

Minus 1 converts to 0xFFFFFFFF.