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3Utils

Number Base Converter

Binary (Base 2)
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Octal (Base 8)
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Decimal (Base 10)
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Hexadecimal (Base 16)
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? Frequently Asked Questions

What number bases can I convert between?

The converter supports binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). You can convert from any base to any other base instantly.

How do hexadecimal letters work?

In hexadecimal, digits 0-9 are used for values 0-9, and letters A-F represent values 10-15. For example, 'FF' in hex equals 255 in decimal. The converter handles both uppercase and lowercase letters.

Can it handle negative numbers?

Yes, the converter supports negative numbers in all bases. It uses standard two's complement representation for negative binary numbers, which is how computers store negative integers.

What's the maximum number size it can convert?

The converter can handle very large numbers (up to JavaScript's safe integer limit of 2^53-1, or about 9 quadrillion). Results beyond this may lose precision.

Why would I need to convert number bases?

Base conversion is essential in programming and computer science. Binary represents how computers store data, hexadecimal is used for memory addresses and colors, and octal is used in file permissions.

Is my data safe and secure?

Yes, absolutely! This tool runs entirely in your browser. All data processing happens locally on your device - nothing is uploaded to our servers. Your files and data never leave your computer, ensuring complete privacy and security.