Number Base Converter
Free online number base converter. Convert between binary, decimal, hexadecimal, and octal instantly. Useful for color values and bitwise operations.
Enter a number or use Example.
— — — — The number 202 looks completely different depending on which base it's written in, 11001010 in binary, CA in hex, 312 in octal, all describing the exact same quantity, and seeing all four representations of one value side by side is genuinely the fastest way to build an actual intuition for how positional number systems relate to each other. This tool converts a value between binary, decimal, hexadecimal, and octal instantly, displaying every base together rather than one conversion direction at a time.
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Useful for a student comparing how the same number looks across all four bases to understand the relationship between them, checking a hex color value's decimal equivalent while learning how the two connect, or seeing a binary flag's value across every base at once instead of converting one pair at a time.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline