Number Base Converter

Select "Binary (Base 2)" as the source base, enter your binary number (e.g., 1101), and the decimal result appears instantly in the output row.

Hex uses digits 0–9 and letters A–F (case-insensitive). So valid hex characters are 0-9 and a-f/A-F. The tool validates your input against the selected source base and shows an error for invalid characters.

0xFF is how C-family programming languages write hexadecimal literals. The "0x" prefix means "this is hex." FF in hex equals 255 in decimal and 11111111 in binary — the maximum value of a single byte.

CSS hex colors like #FF5733 represent red, green, and blue channels as two hex digits each (00–FF = 0–255). Hex is used because a single byte (0–255) maps cleanly to exactly two hex digits, making it compact and readable.

Yes. All conversions use JavaScript's native parseInt() and toString() methods running locally in your browser. No data is sent to any server.