Number

Convert numbers between binary, octal, decimal and hex.

Convert between numbers and Roman numerals.

Spell out numbers in English words.

Compute AND, OR, XOR, NOT and shifts.

Percent of, change, and X is what % of Y.

Mean, median, mode, range and sum of numbers.

Test primality and factorize a number.

Greatest common divisor and least common multiple.

Generate the Fibonacci sequence.

Convert between decimal and scientific/E notation.

Add thousands separators and format numbers by locale.

Convert numbers to ordinals (1 to 1st, 2 to 2nd).