Free Number Base Converter — Binary, Octal, Decimal, Hex

The Number Base Converter allows you to instantly translate values between binary, octal, decimal, and hexadecimal systems — essential for developers, students, and engineers working across different data representations. It simplifies complex math and ensures accuracy in your technical calculations. This tool is free, private, and runs entirely in your browser with zero registration.

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   Select the input base (binary

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   octal

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   decimal

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   or hex).

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   Type your number into the input field.

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   All other base representations update instantly — copy any value you need.

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   Enter the number you want to convert in the source base field.

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   Select the original base and the target base from the options.

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   Copy the converted result to use in your technical project or study.

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    What bases can I convert between?

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    You can convert between binary (Base 2), octal (Base 8), decimal (Base 10), and hexadecimal (Base 16) easily and accurately.