ZenovayTools

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal bases.

Binarybase 2

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Octalbase 8

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Decimalbase 10

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Hexadecimalbase 16

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How to Use Number Base Converter

  1. 1Select the input number base: binary, octal, decimal, or hexadecimal.
  2. 2Enter the number you want to convert.
  3. 3View the number converted to all other bases simultaneously.
  4. 4Copy any converted value with one click.
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Frequently Asked Questions

What number bases are supported?▾
Binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). Enter a value in any base and see the result in all other bases simultaneously.
How does the conversion work?▾
The tool parses the input in the selected base, converts it to a JavaScript number (decimal), then outputs it in all four bases. For hexadecimal output, letters are displayed in uppercase.
Is there a size limit for numbers?▾
The tool supports numbers up to JavaScript's safe integer limit (2^53 - 1). For very large numbers, results may lose precision.
Can I convert negative numbers?▾
Negative numbers are supported for decimal input. Binary, octal, and hex inputs are treated as unsigned.
Is my data processed locally?▾
Yes, all conversions happen entirely in your browser. No data is sent to any server.
When should I use a number base converter?▾
Use it when working with low-level programming, reading memory addresses (hex), analyzing binary protocols, debugging bitwise operations, or understanding file permissions in octal.
Can I copy the converted values?▾
Yes. Each output format has a copy button that copies the value with its standard prefix (0b for binary, 0o for octal, 0x for hex) to your clipboard.