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DEC to HEX Converter Online

Converting decimal numbers to hexadecimal (HEX) is widely used in programming for representing colors, memory addresses, and bitmasks.

number-base
DEC → HEX
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10

Decimal (DEC)

Convert from/to decimal number system

01

Binary (BIN)

Convert from/to binary number system

0x

Hexadecimal (HEX)

Convert from/to hexadecimal number system

0o

Octal (OCT)

Convert from/to octal number system

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Frequently Asked Questions

To convert from DEC to HEX, the number is repeatedly divided by 16. The remainders are written in reverse order, with values 10-15 replaced by letters A-F.
HEX is used for CSS colors (#FF0000), memory addresses, MAC addresses, Unicode characters, and debugging binary data.
Each HEX digit represents exactly 4 bits, making it a compact and convenient way to write binary data. The number 255 in DEC is FF in HEX and 11111111 in BIN.