Convert Octal to Hex
Quickly convert octal numbers to hexadecimal numbers. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Convert Octal to Hex
- 1. Paste the octal value. Enter one or more base-8 numbers, such as a Unix file permission mode or a value copied from older assembler output.
- 2. Set the Separator. Choose the character placed between the resulting hex values when converting a batch of octal numbers, or leave it blank for a single value.
- 3. Copy the hex result. The output is the same quantity written in base-16. Copy it into code, a debugger or documentation that expresses values in hex rather than octal.
When to use Convert Octal to Hex
Convert Octal to Hex rewrites a base-8 number in base-16. It bridges systems that still use octal, most commonly Unix permission modes, with tools and code that prefer or require hex.
- Translating a Unix permission for a hex-only tool. You have a file mode written as octal like 755 but a script or API you are integrating with expects permissions as a hex bitmask instead.
- Reading a legacy system's octal constants. An older assembler or minicomputer manual documents a value in octal, and you want the hex equivalent to compare against a modern reference.
- Verifying a manual base conversion. You are practicing octal-to-hex conversion by hand, such as turning 12 in octal into a in hex, and want to confirm your arithmetic is correct.
Examples
Convert
Input
12
Output
a
About the Convert Octal to Hex tool
Convert Octal to Hex runs as plain JavaScript in your browser tab, with no server behind it. Quickly convert octal numbers to hexadecimal numbers. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Hex Tools section, 108 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with the Separator setting, and the result refreshes the moment you change it. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Convert Octal to Hex cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.