Hex to Octal

Convert a hexadecimal number to octal.

Hex Input

Octal Result

What Is a Hex to Octal?

The Hex to Octal converter interprets hexadecimal (base-16) numbers and outputs their octal (base-8) form. The conversion is exact even for very large values, thanks to BigInt arithmetic.

How to Use This Hex to Octal

1
Input NumberEnter a hex number such as ff.
2
Instant ConversionThe octal result appears immediately.
3
Copy ResultClick the copy button to save the octal value.

Frequently Asked Questions

FF (255 decimal) equals 377 in octal, since 3×64 + 7×8 + 7 = 255.

No. Valid octal digits are only 0 through 7. Inputs containing 8 or 9 are rejected with an error.

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