Decimal to Octal Converter
Convert decimal numbers to octal instantly, at any size. Everything runs in the browser.
About decimal and octal
Decimal is base 10 — ordinary numbers. Most code displays values in decimal even when they are stored as bits underneath, so it is usually one side of any base conversion.
Octal is base 8, using digits 0–7. Each octal digit maps to exactly three bits, which is why Unix file permissions like 755 are octal. Code writes it with a 0o prefix.
For example, decimal 1024 is 2000 in octal. The converter uses BigInt, so numbers of any size convert without losing precision, entirely in the browser.
More number base converter pages
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