Number & Base Converters
Convert between numbering systems used in maths and computing.
Decimal to BinaryConvert base-10 integers to binary.Binary to DecimalConvert binary to base-10.Decimal to HexadecimalConvert base-10 to hex.Hexadecimal to DecimalConvert hex to base-10.Universal Base ConverterConvert any integer between bases 2–36.Decimal to Roman NumeralsConvert integers to Roman numerals.Roman Numerals to DecimalConvert Roman numerals to integers.Number to WordsSpell out numbers in English.