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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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DEC to BIN Converter Online HEX to DEC Converter Online BIN to DEC Converter Online OCT to HEX Converter Online OCT to DEC Converter Online

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.