decimal to octal converter
Convert decimal values to octal in your browser. Paste input, adjust options if needed, then copy the result—nothing is uploaded to our servers.
Select target format:
From Decimal:
Switch FormatsTo Octal:
Enter data to convert...
Decimal Input Data
Octal Conversion Result
Conversion Options
Examples
| Input | Output | Note |
|---|---|---|
| 10 | 10 | Sample conversion |
FAQ
- How to convert decimal to octal?
- Enter your decimal data, select options, then convert. Copy the result from the output box.
- Does conversion run locally?
- Yes. Base and encoding conversions run in your browser and are not uploaded to our servers.
Related converters
Instructions
- Paste or type your Decimal data in the input box.
- Choose options if needed (grouping, prefix, endianness, encoding).
- Click Convert and review the Octal result.
- Copy the output. Everything runs locally in your browser.
Format Description
Decimal
Decimal is our everyday number system, using digits 0-9.
- Uses digits 0-9
- Most commonly used numbering system by humans
- Each position has a weight of powers of 10
- Example: 123 = 1×10² + 2×10¹ + 3×10⁰
Octal
Octal uses 8 digits (0-7) and is primarily used in some traditional computer systems and Unix file permissions.
- Uses digits 0-7
- Widely used in early computer systems
- Each octal digit represents 3 binary bits
- Often uses '0' prefix, such as '0o755'