Octal to Hex

Convert an octal number to hexadecimal.

Octal Input

Hex Result

What Is a Octal to Hex?

The Octal to Hex converter transforms octal (base-8) numbers into hexadecimal. Octal digits use 0-7, and converting between these two radices is common in Unix file permissions, legacy systems, and low-level programming.

How to Use This Octal to Hex

1
Input NumberEnter an octal number such as 377.
2
Instant ConversionThe hexadecimal result appears as you type.
3
Copy ResultClick the copy button to save the hex value.

Frequently Asked Questions

Octal 377 is 255 in decimal, which is FF in hexadecimal. Each group of octal digits maps neatly because 8 and 16 share a power-of-two relationship.

Octal groups binary bits in threes and is still used for Unix file permissions (e.g. chmod 755), some file formats, and older systems.

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