Decimal to Octal Converter

Decimal to Octal

Convert decimal (base 10) numbers to octal (base 8) in your browser. Prefixes like none are accepted on input. Need the opposite direction? Convert Octal to Decimal.

Related base conversions

• Octal to Decimal(8 → 10)
• Binary to Octal(2 → 8)
• Binary to Decimal(2 → 10)
• Octal to Binary(8 → 2)
• Octal to Hex(8 → 16)
• Decimal to Binary(10 → 2)
• Decimal to Hex(10 → 16)
• Hex to Octal(16 → 8)

Frequently asked questions

How do I convert decimal to octal?

Enter a decimal value above. The octal result is highlighted, and you can copy the raw or prefixed form.

Does this support large integers?

Yes — conversions use BigInt so values are not limited to 32-bit or 64-bit ranges.

Can I convert other bases too?

Switch the input base, click a different result to set the target, or open the main number base converter.