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Decimal to Octal Converter

Convert decimal numbers to octal (base-8) values instantly.

About Decimal to Octal Converter

The Decimal to Octal Converter transforms decimal (base-10) numbers into octal (base-8) representation. Octal was historically important in computing and is still used in Unix file permissions.

Each octal digit represents 3 bits. Enter your decimal numbers and get instant octal conversions.

Input

Octal Result

Octal result will appear here

How to Use

1

Enter Decimal

Type decimal numbers separated by spaces, commas, or newlines.

2

Convert

Click "Convert to Octal" to see the result.

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Frequently Asked Questions

How do I convert decimal to octal?

Divide the number by 8 repeatedly and record remainders. Example: 100 ÷ 8 = 12 r4, 12 ÷ 8 = 1 r4, 1 ÷ 8 = 0 r1 → 144 octal.

What is 255 in octal?

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

Where is octal used?

Octal is used in Unix/Linux file permissions (chmod 755), and historically in early computing systems.

Is this free?

Yes, 100% free and runs in your browser.