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Hazuu Tools

Binary to Octal

Convert binary numbers to octal — enter, convert, and copy instantly.

Input Binary
Output Octal
Octal output will appear here...
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About Binary to Octal Converter

Binary to octal conversion translates a base-2 number (composed of 0s and 1s) into its base-8 equivalent. Because 8 is a power of 2 (2^3 = 8), every group of three binary digits maps directly to a single octal digit, making the conversion straightforward and efficient. Octal notation is commonly used in Unix/Linux file permissions, older computing systems, and embedded programming where a compact representation of binary data is needed.

This free online converter supports everything from short binary values to arbitrarily large numbers using BigInt. Enter multiple binary numbers on separate lines for batch conversion. All processing runs entirely in your browser — no data is transmitted to any server, so your input stays completely private. No sign-up, no ads, just instant binary-to-octal conversion.

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How to Use

01

Enter Binary Number

Type or paste your binary number into the input area. You can enter multiple numbers on separate lines for batch conversion.

02

Convert

Click "Convert" to calculate the octal equivalent of your binary input. Each line is converted independently.

03

Copy Result

Copy the octal result to your clipboard with one click using the copy button in the toolbar.

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Frequently Asked Questions

What is binary to octal conversion? expand_more
Binary to octal conversion translates a base-2 number (using only digits 0 and 1) into a base-8 number (using digits 0 through 7). Because 8 is 2 raised to the power of 3, each group of three binary digits corresponds to exactly one octal digit — for example, binary 111 equals octal 7 and binary 000 equals octal 0.
How does binary to octal conversion work? expand_more
Starting from the right, group the binary digits into sets of three (pad the leftmost group with leading zeros if needed). Then convert each three-bit group to its octal equivalent. For example, binary 11110000 becomes 011 110 000, which is octal 360.
Can this tool handle very large binary numbers? expand_more
Yes. For binary numbers longer than 53 bits (which exceed the precision of standard JavaScript numbers), the tool automatically uses BigInt to perform the conversion with full accuracy. There is no practical limit on the size of binary input.
Is my data secure? expand_more
Absolutely. All conversion happens entirely in your browser using client-side JavaScript. No data is sent to any server, so your binary input and octal output remain completely private.