RU

OCT to HEX Converter Online

Converting octal numbers to hexadecimal (HEX) is often needed when working with Unix file permissions and low-level data representations.

number-base
OCT → HEX
Was this tool helpful?
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

Related Tools

Frequently Asked Questions

The easiest way is to first convert octal to binary (each digit = 3 bits), then group the bits into sets of 4 and convert to HEX. For example, 377₈ = 011 111 111₂ = 0FF₁₆.
Octal is widely used in Unix/Linux for file permissions (chmod 755), and appears in some programming languages for numeric literals.
Yes, you can use a lookup table where each pair of octal digits maps to one and a half HEX digits. In practice, the binary method is simpler and more intuitive — just remember three bits per octal digit.