handyman
Hazuu Tools

Decimal to Hex

Convert decimal numbers to hexadecimal — enter, convert, and copy instantly.

Input Decimal
Output Hex
Hex output will appear here...
info

About Decimal to Hex Converter

Decimal to hexadecimal conversion transforms a standard base-10 number into its base-16 representation. Hexadecimal uses digits 0-9 and letters a-f to represent values, making it a compact way to express large binary values. Hex notation is widely used in programming, web development (CSS colors), memory addresses, MAC addresses, and low-level systems work where readability of binary data matters.

This free online converter instantly translates decimal integers — including negative and arbitrarily large numbers — into lowercase hexadecimal. You can convert multiple values at once by placing each on a separate line. All processing happens entirely in your browser with no data sent to any server, so your input remains completely private. No sign-up, no ads, just fast and accurate decimal-to-hex conversion.

help

How to Use

01

Enter Decimal Number

Type or paste your decimal number into the input area. You can enter multiple numbers on separate lines for batch conversion.

02

Convert

Click "Convert" to calculate the hexadecimal equivalent of your decimal input. Each line is converted independently.

03

Copy Result

Copy the hex result to your clipboard with one click using the copy button in the toolbar.

quiz

Frequently Asked Questions

What is decimal to hexadecimal conversion? expand_more
Decimal to hexadecimal conversion translates a base-10 number into a base-16 number. Hexadecimal uses the digits 0-9 for values zero through nine and the letters a-f for values ten through fifteen. For example, the decimal number 255 converts to ff in hexadecimal.
How does decimal to hex conversion work? expand_more
To convert a decimal number to hexadecimal, you repeatedly divide the number by 16 and record the remainder at each step. The remainders, read in reverse order, form the hexadecimal representation. For example, 255 / 16 = 15 remainder 15, which gives ff in hex.
Can this tool handle very large decimal numbers? expand_more
Yes. For numbers that exceed the precision of standard JavaScript numbers (roughly 15+ digits), the tool automatically uses BigInt to perform the conversion with full accuracy. There is no practical limit on the size of the decimal input.
Is my data secure? expand_more
Absolutely. All conversion happens entirely in your browser using client-side JavaScript. No data is sent to any server, so your decimal input and hexadecimal output remain completely private.