Number & Code Tools

Binary, hex, ASCII, and base converters.

• Binary ⇄ Decimal

  Convert between binary and decimal numbers in both directions. Supports signed integers and shows the step-by-step positional value breakdown for each conversion.

• Binary ⇄ Hex

  Convert between binary and hexadecimal notation. Handles any length input and groups binary output into nibbles (4-bit groups) for readability.

• Hex ⇄ Decimal

  Convert between hexadecimal and decimal numbers. Supports uppercase and lowercase hex input — useful for color codes, memory addresses, and network protocols.

• Octal ⇄ Decimal

  Convert between octal (base 8) and decimal (base 10). Useful for Unix file permissions, legacy computing, and programming exercises involving number systems.

• Number Base Converter

  Convert any number between any two bases from 2 (binary) to 36. Enter the source base, target base, and number — ideal for computer science and custom encoding schemes.

• ASCII Converter

  Convert text to ASCII character codes and ASCII codes back to text. Shows decimal, hexadecimal, and binary representations for each character simultaneously.

• Roman Numeral Converter

  Convert integers to Roman numerals and Roman numerals back to integers. Supports 1–3999 with proper subtractive notation (IV, IX, XL, XC, CD, CM).

• BCD Converter

  Convert decimal numbers to Binary-Coded Decimal (BCD) and back. Shows the 4-bit group encoding for each decimal digit — useful for electronics and embedded systems.