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Octal to Hexadecimal Converter

Convert octal (base-8) numbers to hexadecimal (base-16).

Try an example:
Binary (2)
11111111
Octal (8)
377
Decimal (10)
255
Hexadecimal (16)
ff

Converting Octal to Hexadecimal

Octal and hex have no direct digit mapping, so the simplest route is through decimal (or binary).

How to convert Octal to Hexadecimal by hand

  1. Convert the octal value to decimal (or to binary).
  2. Convert that to hexadecimal.
  3. Read off the hex digits 0–9 and A–F.

Worked example

377 (octal) → FF (hex) — 377 octal = 255 decimal = FF.

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Frequently asked questions

How do I convert Octal to Hexadecimal?

Convert the octal value to decimal (or to binary). Convert that to hexadecimal. Read off the hex digits 0–9 and A–F. Or just use the converter on this page — it does it instantly. Example: 377 (octal) becomes FF (hex).

What is 377 (octal) in hexadecimal?

377 (octal) converts to FF (hex). 377 octal = 255 decimal = FF.

Is this converter free and private?

Yes — it is free and unlimited, and the conversion runs entirely in your browser, so nothing is uploaded to a server.