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Convert between binary, octal, decimal & hex instantly with input validation.
Number Base Converter makes it simple to convert between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) number systems. Whether you're a computer science student studying number systems, a developer debugging hex values, or preparing for an IT certification exam, this radix converter has you covered. How It Works Enter a value in any one of the four base fields, and the other three results update instantly. No buttons to press, no extra steps. Just type and see every conversion at once. Supported Number Bases - Binary (Base 2) - Octal (Base 8) - Decimal (Base 10) - Hexadecimal (Base 16) Key Features Instant Conversion Type a number in any base and all other bases are calculated in real time. Converting binary to decimal, hex to octal, or any other combination happens automatically as you type. Smart Input Validation The app only accepts valid digits for each base. Binary fields accept 0 and 1 only. Hex fields accept 0-9 and A-F. This prevents errors before they happen. 4-Bit Binary Grouping Binary results are displayed in 4-bit groups (e.g., 1111 0011) for easy reading. This is especially useful when working with bytes, nibbles, and bitwise operations. Comma Separator Large decimal numbers can be displayed with comma separators for readability. Clipboard Copy Tap the copy button next to any result to copy it to your clipboard. Need all four values at once? Use the "Copy All" button. Dark Mode Switch between light and dark themes based on your preference. Multi-Language Support Available in 37 languages. Perfect For - Computer science coursework and assignments - Programming and software development - IT certification and exam preparation - Learning about number systems and base conversion Number Base Converter is a lightweight programmer calculator that works offline with zero internet required. All calculations happen locally on your device.