What is the difference between binary, octal, decimal, and hexadecimal?

Binary (base 2) uses digits 0-1, octal (base 8) uses 0-7, decimal (base 10) uses 0-9, and hexadecimal (base 16) uses 0-9 and A-F. Each base represents the same number using different positional systems. Hexadecimal is compact for humans, binary is native to hardware, and decimal is everyday notation.

Can I convert negative numbers?

Yes. The converter handles negative numbers by converting the absolute value and prepending the negative sign. For two's complement binary representation, you would need a separate bitwise converter.

What does the 0x prefix mean?

The 0x prefix indicates a hexadecimal number in programming languages like C, Java, and JavaScript. Similarly, 0b indicates binary and 0o indicates octal. The converter displays these prefixes for clarity when copying values into code.

How large a number can I convert?

The converter uses BigInt arithmetic, which supports integers of arbitrary size. You can convert numbers with hundreds or thousands of digits without overflow, limited only by your browser's memory.

Why does the tool reject some characters I type?

Each base only allows specific digits. If you type '2' or '3' while in binary mode, the tool rejects those characters because binary only uses 0 and 1. Switch to the correct input base or check that your number uses valid digits for the selected base.

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Number Base Converter

To convert between number bases, enter your number and select its base (binary, octal, decimal, or hexadecimal). The converter displays the equivalent values in all other bases simultaneously. For example, decimal 255 equals binary 11111111, octal 377, and hexadecimal FF.

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What is Number Base Converter?

A number base converter is an online tool that transforms a number from one positional numeral system (such as binary, octal, decimal, or hexadecimal) to another, displaying all base representations simultaneously.

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Start Using Number Base Converter Today

Whether you are debugging a hex memory address, setting Unix file permissions, or verifying your binary arithmetic homework, this number base converter gives you instant, simultaneous results across all four common bases. With real-time input validation, BigInt precision, and one-click copying, it is the fastest way to move between numeral systems without second-guessing your conversions.

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