Convert Hex to Octal Online
Turn Hex files into Octal directly in your browser using ConverterUp. There is no upload, no waiting in a queue, and no account required — your files stay on your device while WebAssembly does the work locally. Adjust quality and dimensions where supported, then download the result. The output keeps the visual fidelity you'd expect from a desktop app while running entirely in the browser tab.
Convert Hex to Octal nowHow to convert Hex to Octal
Open the converter
Click the button to open the Hex to Octal tool. It loads instantly — no install, no signup.
Drop your Hex file
Drag your Hex file into the upload area or click to browse. The file stays in your browser memory only.
Download Octal
The conversion runs locally and finishes in seconds. Click download to save the Octal file to your device.
Hex vs Octal at a glance
Key technical differences between the two formats, so you know what to expect before converting.
| Feature | Hex | Octal |
|---|---|---|
| Type | Number system | Number system |
| Base (radix) | 16 | 8 |
What changes when you convert Hex to Octal
- Hex is base 16 and Octal is base 8. The value stays exactly the same — only the way it is written changes.
- The quickest manual method goes through binary: write each Hex digit as bits, then regroup those bits for base 8.
- Example: 3E8 in Hex equals 1750 in Octal (that is 1000 in decimal).
Quick reference: Hex to Octal
| Hex | Octal |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 7 | 7 |
| 8 | 10 |
| A | 12 |
| F | 17 |
| 10 | 20 |
| 20 | 40 |
| 40 | 100 |
| 64 | 144 |
| 7F | 177 |
| 80 | 200 |
| FF | 377 |
| 100 | 400 |
| 3E8 | 1750 |
| 400 | 2000 |
About Hex
Hexadecimal is base 16, using the digits 0–9 and the letters A–F. One hex digit represents exactly four bits, so two digits describe one byte.
- Best for
- Colors in CSS (#FF5733), memory addresses, byte dumps and hashes.
- Strengths
- Compact and maps directly to binary.
- Limitations
- Less intuitive for everyday arithmetic than decimal.
About Octal
Octal is base 8, using the digits 0 to 7. Each octal digit represents exactly three bits.
- Best for
- Unix file permissions (chmod 755), some legacy systems and escape sequences.
- Strengths
- Compact representation of groups of three bits.
- Limitations
- Rarely used outside permissions and older systems.
Frequently asked questions
Is the Hex to Octal conversion really free?
Yes. ConverterUp is fully free, with no signup, no watermarks, and no daily quota for the Hex to Octal converter. We support the project through unobtrusive ads.
Are my Hex files uploaded to a server?
No. Conversion runs in your browser using WebAssembly. The Hex bytes never leave your device, and we have no upload endpoint at all.
What is the maximum file size?
For Hex input, the soft cap is 50 MB for images and 500 MB for video. Practical performance depends on your device's RAM.
How do I convert Hex to Octal by hand?
The quickest manual method goes through binary: write each Hex digit as bits, then regroup those bits for base 8.
What is 3E8 (Hex) in Octal?
3E8 in Hex is 1750 in Octal. In decimal the value is 1000.
Related guide
Hex to Decimal Conversion ExplainedRelated conversions
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